Move video/audio codec selection from main.cpp into codec_select module

Codec selection returns gsr_error values instead of exiting, and takes
gsr_recorder_settings instead of the argument parser.

2 files changed, 533 insertions, 508 deletions

diff --git a/src/main.cpp b/src/main.cpp
index b618a3b..70ef9e8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2,6 +2,8 @@ extern "C" {
 #include "../include/ffmpeg_utils.h"
 #include "../include/recorder/audio_codec.h"
 #include "../include/recorder/video_codec.h"
+#include "../include/recorder/codec_select.h"
+#include "../include/recorder/error.h"
 #include "../include/capture/nvfbc.h"
 #include "../include/capture/xcomposite.h"
 #include "../include/capture/ximage.h"
@@ -811,72 +813,6 @@ fail:
     return err;
 }
 
-static gsr_video_encoder* create_video_encoder(gsr_egl *egl, const args_parser &arg_parser) {
-    const gsr_color_depth color_depth = video_codec_to_bit_depth(arg_parser.settings.video_codec);
-    gsr_video_encoder *video_encoder = nullptr;
-
-    if(arg_parser.settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU) {
-        gsr_video_encoder_software_params params;
-        params.egl = egl;
-        params.color_depth = color_depth;
-        video_encoder = gsr_video_encoder_software_create(&params);
-        return video_encoder;
-    }
-
-    if(video_codec_is_vulkan(arg_parser.settings.video_codec)) {
-        gsr_video_encoder_vulkan_params params;
-        params.egl = egl;
-        params.color_depth = color_depth;
-        video_encoder = gsr_video_encoder_vulkan_create(&params);
-        return video_encoder;
-    }
-
-    switch(egl->gpu_info.vendor) {
-        case GSR_GPU_VENDOR_AMD:
-        case GSR_GPU_VENDOR_INTEL:
-        case GSR_GPU_VENDOR_BROADCOM: {
-            gsr_video_encoder_vaapi_params params;
-            params.egl = egl;
-            params.color_depth = color_depth;
-            video_encoder = gsr_video_encoder_vaapi_create(&params);
-            break;
-        }
-        case GSR_GPU_VENDOR_NVIDIA: {
-            gsr_video_encoder_nvenc_params params;
-            params.egl = egl;
-            params.color_depth = color_depth;
-            video_encoder = gsr_video_encoder_nvenc_create(&params);
-            break;
-        }
-    }
-
-    return video_encoder;
-}
-
-static bool get_supported_video_codecs(gsr_egl *egl, gsr_video_codec video_codec, bool use_software_video_encoder, bool cleanup, gsr_supported_video_codecs *video_codecs) {
-    memset(video_codecs, 0, sizeof(*video_codecs));
-
-    if(use_software_video_encoder) {
-        video_codecs->h264.supported = avcodec_find_encoder_by_name("libx264");
-        video_codecs->h264.max_resolution = {4096, 2304};
-        return true;
-    }
-
-    if(video_codec_is_vulkan(video_codec))
-        return gsr_get_supported_video_codecs_vulkan(video_codecs, egl->card_path, &egl->vulkan_device_index, cleanup);
-
-    switch(egl->gpu_info.vendor) {
-        case GSR_GPU_VENDOR_AMD:
-        case GSR_GPU_VENDOR_INTEL:
-        case GSR_GPU_VENDOR_BROADCOM:
-            return gsr_get_supported_video_codecs_vaapi(video_codecs, egl->card_path, cleanup);
-        case GSR_GPU_VENDOR_NVIDIA:
-            return gsr_get_supported_video_codecs_nvenc(video_codecs, cleanup);
-    }
-
-    return false;
-}
-
 static void xwayland_check_callback(const gsr_monitor *monitor, void *userdata) {
     bool *xwayland_found = (bool*)userdata;
     if(monitor->name_len >= 8 && strncmp(monitor->name, "XWAYLAND", 8) == 0)
@@ -949,80 +885,6 @@ static void list_gpu_info(gsr_egl *egl) {
     printf("card_path|%s\n", egl->card_path);
 }
 
-static const AVCodec* get_ffmpeg_video_codec(gsr_video_codec video_codec, gsr_gpu_vendor vendor) {
-    switch(video_codec) {
-        case GSR_VIDEO_CODEC_H264:
-            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "h264_nvenc" : "h264_vaapi");
-        case GSR_VIDEO_CODEC_HEVC:
-        case GSR_VIDEO_CODEC_HEVC_HDR:
-        case GSR_VIDEO_CODEC_HEVC_10BIT:
-            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "hevc_nvenc" : "hevc_vaapi");
-        case GSR_VIDEO_CODEC_AV1:
-        case GSR_VIDEO_CODEC_AV1_HDR:
-        case GSR_VIDEO_CODEC_AV1_10BIT:
-            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "av1_nvenc" : "av1_vaapi");
-        case GSR_VIDEO_CODEC_VP8:
-            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp8_nvenc" : "vp8_vaapi");
-        case GSR_VIDEO_CODEC_VP9:
-            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp9_nvenc" : "vp9_vaapi");
-        case GSR_VIDEO_CODEC_H264_VULKAN:
-            return avcodec_find_encoder_by_name("h264_vulkan");
-        case GSR_VIDEO_CODEC_HEVC_VULKAN:
-        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:
-        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN:
-            return avcodec_find_encoder_by_name("hevc_vulkan");
-        case GSR_VIDEO_CODEC_AV1_VULKAN:
-        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:
-        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN:
-            return avcodec_find_encoder_by_name("av1_vulkan");
-    }
-    return nullptr;
-}
-
-static void set_supported_video_codecs_ffmpeg(gsr_supported_video_codecs *supported_video_codecs, gsr_supported_video_codecs *supported_video_codecs_vulkan, gsr_gpu_vendor vendor) {
-    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_H264, vendor)) {
-        supported_video_codecs->h264.supported = false;
-    }
-
-    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_HEVC, vendor)) {
-        supported_video_codecs->hevc.supported = false;
-        supported_video_codecs->hevc_hdr.supported = false;
-        supported_video_codecs->hevc_10bit.supported = false;
-    }
-
-    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_AV1, vendor)) {
-        supported_video_codecs->av1.supported = false;
-        supported_video_codecs->av1_hdr.supported = false;
-        supported_video_codecs->av1_10bit.supported = false;
-    }
-
-    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_VP8, vendor)) {
-        supported_video_codecs->vp8.supported = false;
-    }
-
-    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_VP9, vendor)) {
-        supported_video_codecs->vp9.supported = false;
-    }
-
-    if(supported_video_codecs_vulkan) {
-        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_H264_VULKAN, vendor)) {
-            supported_video_codecs_vulkan->h264.supported = false;
-        }
-
-        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_HEVC_VULKAN, vendor)) {
-            supported_video_codecs_vulkan->hevc.supported = false;
-            supported_video_codecs_vulkan->hevc_hdr.supported = false;
-            supported_video_codecs_vulkan->hevc_10bit.supported = false;
-        }
-
-        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_AV1_VULKAN, vendor)) {
-            supported_video_codecs_vulkan->av1.supported = false;
-            supported_video_codecs_vulkan->av1_hdr.supported = false;
-            supported_video_codecs_vulkan->av1_10bit.supported = false;
-        }
-    }
-}
-
 static void list_supported_video_codecs(gsr_egl *egl, bool wayland) {
     // Dont clean it up on purpose to increase shutdown speed
     gsr_supported_video_codecs supported_video_codecs;
@@ -2364,372 +2226,7 @@ static void validate_merged_audio_inputs_app_audio(const std::vector<MergedAudio
     }
 }
 
-static gsr_audio_codec select_audio_codec_with_fallback(gsr_audio_codec audio_codec, const std::string &file_extension, bool uses_amix) {
-    switch(audio_codec) {
-        case GSR_AUDIO_CODEC_AAC: {
-            if(file_extension == "webm") {
-                //audio_codec_to_use = "opus";
-                audio_codec = GSR_AUDIO_CODEC_OPUS;
-                gsr_log(GSR_LOG_LEVEL_WARNING, ".webm files only support opus audio codec, changing audio codec from aac to opus");
-            }
-            break;
-        }
-        case GSR_AUDIO_CODEC_OPUS: {
-            if(file_extension != "mp4" && file_extension != "mkv" && file_extension != "webm" && file_extension != "ts" && file_extension != "whip") {
-                //audio_codec_to_use = "aac";
-                audio_codec = GSR_AUDIO_CODEC_AAC;
-                gsr_log(GSR_LOG_LEVEL_WARNING, "opus audio codec is only supported by .mp4, .mkv, .webm and .ts files, falling back to aac instead");
-            }
-            break;
-        }
-        case GSR_AUDIO_CODEC_FLAC: {
-            // TODO: Also check mpegts?
-            if(file_extension == "webm") {
-                //audio_codec_to_use = "opus";
-                audio_codec = GSR_AUDIO_CODEC_OPUS;
-                gsr_log(GSR_LOG_LEVEL_WARNING, ".webm files only support opus audio codec, changing audio codec from flac to opus");
-            } else if(file_extension != "mp4" && file_extension != "mkv") {
-                //audio_codec_to_use = "aac";
-                audio_codec = GSR_AUDIO_CODEC_AAC;
-                gsr_log(GSR_LOG_LEVEL_WARNING, "flac audio codec is only supported by .mp4 and .mkv files, falling back to aac instead");
-            } else if(uses_amix) {
-                // TODO: remove this? is it true anymore?
-                //audio_codec_to_use = "opus";
-                audio_codec = GSR_AUDIO_CODEC_OPUS;
-                gsr_log(GSR_LOG_LEVEL_WARNING, "flac audio codec is not supported when mixing audio sources, falling back to opus instead");
-            }
-            break;
-        }
-    }
-    return audio_codec;
-}
-
-static bool video_codec_only_supports_low_power_mode(const gsr_supported_video_codecs &supported_video_codecs, gsr_video_codec video_codec) {
-    switch(video_codec) {
-        case GSR_VIDEO_CODEC_H264:              return supported_video_codecs.h264.low_power;
-        case GSR_VIDEO_CODEC_HEVC:              return supported_video_codecs.hevc.low_power;
-        case GSR_VIDEO_CODEC_HEVC_HDR:          return supported_video_codecs.hevc_hdr.low_power;
-        case GSR_VIDEO_CODEC_HEVC_10BIT:        return supported_video_codecs.hevc_10bit.low_power;
-        case GSR_VIDEO_CODEC_AV1:               return supported_video_codecs.av1.low_power;
-        case GSR_VIDEO_CODEC_AV1_HDR:           return supported_video_codecs.av1_hdr.low_power;
-        case GSR_VIDEO_CODEC_AV1_10BIT:         return supported_video_codecs.av1_10bit.low_power;
-        case GSR_VIDEO_CODEC_VP8:               return supported_video_codecs.vp8.low_power;
-        case GSR_VIDEO_CODEC_VP9:               return supported_video_codecs.vp9.low_power;
-        case GSR_VIDEO_CODEC_H264_VULKAN:       return supported_video_codecs.h264.low_power;
-        case GSR_VIDEO_CODEC_HEVC_VULKAN:       return supported_video_codecs.hevc.low_power;
-        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:   return supported_video_codecs.hevc_hdr.low_power;
-        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: return supported_video_codecs.hevc_10bit.low_power;
-        case GSR_VIDEO_CODEC_AV1_VULKAN:        return supported_video_codecs.av1.low_power;
-        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:    return supported_video_codecs.av1_hdr.low_power;
-        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN:  return supported_video_codecs.av1_10bit.low_power;
-    }
-    return false;
-}
-
-static const AVCodec* get_av_codec_if_supported(gsr_video_codec video_codec, gsr_egl *egl, bool use_software_video_encoder, const gsr_supported_video_codecs *supported_video_codecs) {
-    switch(video_codec) {
-        case GSR_VIDEO_CODEC_H264:
-        case GSR_VIDEO_CODEC_H264_VULKAN: {
-            if(use_software_video_encoder)
-                return avcodec_find_encoder_by_name("libx264");
-            else if(supported_video_codecs->h264.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC:
-        case GSR_VIDEO_CODEC_HEVC_VULKAN: {
-            if(supported_video_codecs->hevc.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC_HDR:
-        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN: {
-            if(supported_video_codecs->hevc_hdr.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC_10BIT:
-         case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
-            if(supported_video_codecs->hevc_10bit.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1:
-        case GSR_VIDEO_CODEC_AV1_VULKAN: {
-            if(supported_video_codecs->av1.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1_HDR:
-        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN: {
-            if(supported_video_codecs->av1_hdr.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1_10BIT:
-        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
-            if(supported_video_codecs->av1_10bit.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_VP8: {
-            if(supported_video_codecs->vp8.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-        case GSR_VIDEO_CODEC_VP9: {
-            if(supported_video_codecs->vp9.supported)
-                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
-            break;
-        }
-    }
-    return nullptr;
-}
-
-static vec2i codec_get_max_resolution(gsr_video_codec video_codec, bool use_software_video_encoder, const gsr_supported_video_codecs *supported_video_codecs) {
-    switch(video_codec) {
-        case GSR_VIDEO_CODEC_H264:
-        case GSR_VIDEO_CODEC_H264_VULKAN: {
-            if(use_software_video_encoder)
-                return {4096, 2304};
-            else if(supported_video_codecs->h264.supported)
-                return supported_video_codecs->h264.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC:
-        case GSR_VIDEO_CODEC_HEVC_VULKAN: {
-            if(supported_video_codecs->hevc.supported)
-                return supported_video_codecs->hevc.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC_HDR:
-        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN: {
-            if(supported_video_codecs->hevc_hdr.supported)
-                return supported_video_codecs->hevc_hdr.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_HEVC_10BIT:
-        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
-            if(supported_video_codecs->hevc_10bit.supported)
-                return supported_video_codecs->hevc_10bit.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1:
-        case GSR_VIDEO_CODEC_AV1_VULKAN: {
-            if(supported_video_codecs->av1.supported)
-                return supported_video_codecs->av1.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1_HDR:
-        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN: {
-            if(supported_video_codecs->av1_hdr.supported)
-                return supported_video_codecs->av1_hdr.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_AV1_10BIT:
-        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
-            if(supported_video_codecs->av1_10bit.supported)
-                return supported_video_codecs->av1_10bit.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_VP8: {
-            if(supported_video_codecs->vp8.supported)
-                return supported_video_codecs->vp8.max_resolution;
-            break;
-        }
-        case GSR_VIDEO_CODEC_VP9: {
-            if(supported_video_codecs->vp9.supported)
-                return supported_video_codecs->vp9.max_resolution;
-            break;
-        }
-    }
-    return {0, 0};
-}
-
-static bool codec_supports_resolution(vec2i codec_max_resolution, vec2i capture_resolution) {
-    if(codec_max_resolution.x == 0 || codec_max_resolution.y == 0)
-        return true;
-    return codec_max_resolution.x >= capture_resolution.x && codec_max_resolution.y >= capture_resolution.y;
-}
-
-static void print_codec_error(gsr_video_codec video_codec) {
-    if(video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO)
-        video_codec = GSR_VIDEO_CODEC_H264;
-
-    const char *video_codec_name = video_codec_to_string(video_codec);
-    gsr_log(GSR_LOG_LEVEL_ERROR, "your gpu does not support '%s' video codec. If you are sure that your gpu does support '%s' video encoding and you are using an AMD/Intel GPU,\n  then make sure you have installed the GPU specific vaapi packages (intel-media-driver, libva-intel-driver, libva-mesa-driver and linux-firmware).\n  It's also possible that your distro has disabled hardware accelerated video encoding for '%s' video codec.\n  This may be the case on corporate distros such as Manjaro, Fedora or OpenSUSE.\n  You can test this by running 'vainfo | grep VAEntrypointEncSlice' to see if it matches any H264/HEVC/AV1/VP8/VP9 profile.\n  On such distros, you need to manually install mesa from source to enable H264/HEVC hardware acceleration, or use a more user friendly distro. Alternatively record with AV1 if supported by your GPU.\n  You can alternatively use the flatpak version of GPU Screen Recorder (https://flathub.org/apps/com.dec05eba.gpu_screen_recorder) which bypasses system issues with patented H264/HEVC codecs.\n  If your GPU doesn't support hardware accelerated video encoding then you can use '-fallback-cpu-encoding yes' option to encode with your cpu instead.", video_codec_name, video_codec_name, video_codec_name);
-}
-
-static void force_cpu_encoding(args_parser *args_parser) {
-    args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-    args_parser->settings.video_encoder = GSR_VIDEO_ENCODER_HW_CPU;
-    if(args_parser->settings.bitrate_mode == GSR_BITRATE_MODE_VBR) {
-        gsr_log(GSR_LOG_LEVEL_WARNING, "bitrate mode has been forcefully set to qp because software encoding option doesn't support vbr option");
-        args_parser->settings.bitrate_mode = GSR_BITRATE_MODE_QP;
-    }
-}
-
-static const AVCodec* pick_video_codec(gsr_egl *egl, args_parser *args_parser, bool use_fallback_codec, bool *low_power, gsr_supported_video_codecs *supported_video_codecs) {
-    // TODO: software encoder for hevc, av1, vp8 and vp9
-    *low_power = false;
-    const AVCodec *video_codec_f = get_av_codec_if_supported(args_parser->settings.video_codec, egl, args_parser->settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
-
-    if(!video_codec_f && use_fallback_codec && args_parser->settings.video_encoder != GSR_VIDEO_ENCODER_HW_CPU) {
-        switch(args_parser->settings.video_codec) {
-            case GSR_VIDEO_CODEC_H264: {
-                gsr_log(GSR_LOG_LEVEL_ERROR, "selected video codec h264 is not supported by your hardware");
-                if(args_parser->settings.fallback_cpu_encoding) {
-                    gsr_log(GSR_LOG_LEVEL_WARNING, "gpu encoding is not available on your system, trying cpu encoding instead because -fallback-cpu-encoding is enabled. Install the proper vaapi drivers on your system (if supported) if you experience performance issues");
-                    force_cpu_encoding(args_parser);
-                }
-                break;
-            }
-            case GSR_VIDEO_CODEC_HEVC:
-            case GSR_VIDEO_CODEC_HEVC_HDR:
-            case GSR_VIDEO_CODEC_HEVC_10BIT: {
-                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec hevc is not supported by your hardware, trying h264 instead");
-                args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-                return pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-            }
-            case GSR_VIDEO_CODEC_AV1:
-            case GSR_VIDEO_CODEC_AV1_HDR:
-            case GSR_VIDEO_CODEC_AV1_10BIT: {
-                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec av1 is not supported by your hardware, trying h264 instead");
-                args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-                return pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-            }
-            case GSR_VIDEO_CODEC_VP8:
-            case GSR_VIDEO_CODEC_VP9:
-                // TODO: Cant fallback to other codec because webm only supports vp8/vp9
-                break;
-            case GSR_VIDEO_CODEC_H264_VULKAN: {
-                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec h264_vulkan is not supported by your hardware, trying h264 instead");
-                args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-                // Need to do a query again because this time it's without vulkan
-                if(!get_supported_video_codecs(egl, args_parser->settings.video_codec, false, true, supported_video_codecs)) {
-                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
-                    print_codec_error(args_parser->settings.video_codec);
-                    _exit(11);
-                }
-                return pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-            }
-            case GSR_VIDEO_CODEC_HEVC_VULKAN:
-            case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:
-            case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
-                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec hevc_vulkan is not supported by your hardware, trying hevc instead");
-                args_parser->settings.video_codec = GSR_VIDEO_CODEC_HEVC;
-                // Need to do a query again because this time it's without vulkan
-                if(!get_supported_video_codecs(egl, args_parser->settings.video_codec, false, true, supported_video_codecs)) {
-                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
-                    print_codec_error(args_parser->settings.video_codec);
-                    _exit(11);
-                }
-                return pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-            }
-            case GSR_VIDEO_CODEC_AV1_VULKAN:
-            case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:
-            case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
-                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec av1_vulkan is not supported by your hardware, trying av1 instead");
-                args_parser->settings.video_codec = GSR_VIDEO_CODEC_AV1;
-                // Need to do a query again because this time it's without vulkan
-                if(!get_supported_video_codecs(egl, args_parser->settings.video_codec, false, true, supported_video_codecs)) {
-                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
-                    print_codec_error(args_parser->settings.video_codec);
-                    _exit(11);
-                }
-                return pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-            }
-        }
-
-        video_codec_f = get_av_codec_if_supported(args_parser->settings.video_codec, egl, args_parser->settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
-    }
-
-    if(!video_codec_f) {
-        print_codec_error(args_parser->settings.video_codec);
-        _exit(54);
-    }
-
-    *low_power = video_codec_only_supports_low_power_mode(*supported_video_codecs, args_parser->settings.video_codec);
-
-    return video_codec_f;
-}
-
 /* Returns -1 if none is available */
-static gsr_video_codec select_appropriate_video_codec_automatically(vec2i video_size, const gsr_supported_video_codecs *supported_video_codecs) {
-    if(supported_video_codecs->h264.supported && codec_supports_resolution(supported_video_codecs->h264.max_resolution, video_size)) {
-        gsr_log(GSR_LOG_LEVEL_INFO, "using h264 encoder because a codec was not specified");
-        return GSR_VIDEO_CODEC_H264;
-    } else if(supported_video_codecs->hevc.supported && codec_supports_resolution(supported_video_codecs->hevc.max_resolution, video_size)) {
-        gsr_log(GSR_LOG_LEVEL_INFO, "using hevc encoder because a codec was not specified and h264 supported max resolution (%dx%d) is less than the capture resolution (%dx%d)", supported_video_codecs->h264.max_resolution.x, supported_video_codecs->h264.max_resolution.y,
-            video_size.x, video_size.y);
-        return GSR_VIDEO_CODEC_HEVC;
-    } else if(supported_video_codecs->av1.supported && codec_supports_resolution(supported_video_codecs->av1.max_resolution, video_size)) {
-        gsr_log(GSR_LOG_LEVEL_INFO, "using av1 encoder because a codec was not specified and hevc supported max resolution (%dx%d) is less than the capture resolution (%dx%d)", supported_video_codecs->hevc.max_resolution.x, supported_video_codecs->hevc.max_resolution.y,
-            video_size.x, video_size.y);
-        return GSR_VIDEO_CODEC_AV1;
-    } else {
-        return (gsr_video_codec)-1;
-    }
-}
-
-static const AVCodec* select_video_codec_with_fallback(vec2i video_size, args_parser *args_parser, const char *file_extension, gsr_egl *egl, bool *low_power) {
-    gsr_supported_video_codecs supported_video_codecs_non_vulkan;
-    get_supported_video_codecs(egl, args_parser->settings.video_codec, args_parser->settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU, true, &supported_video_codecs_non_vulkan);
-
-    gsr_supported_video_codecs supported_video_codecs_vulkan = supported_video_codecs_non_vulkan;
-    set_supported_video_codecs_ffmpeg(&supported_video_codecs_non_vulkan, &supported_video_codecs_vulkan, egl->gpu_info.vendor);
-
-    gsr_supported_video_codecs *supported_video_codecs = video_codec_is_vulkan(args_parser->settings.video_codec)
-        ? &supported_video_codecs_vulkan
-        : &supported_video_codecs_non_vulkan;
-
-    const bool video_codec_auto = args_parser->settings.video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO;
-    if(video_codec_auto) {
-        if(strcmp(file_extension, "webm") == 0) {
-            gsr_log(GSR_LOG_LEVEL_INFO, "using vp8 encoder because a codec was not specified and the file extension is .webm");
-            args_parser->settings.video_codec = GSR_VIDEO_CODEC_VP8;
-        } else if(args_parser->settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU) {
-            gsr_log(GSR_LOG_LEVEL_INFO, "using h264 encoder because a codec was not specified");
-            args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-        } else if(args_parser->settings.video_encoder != GSR_VIDEO_ENCODER_HW_CPU) {
-            args_parser->settings.video_codec = select_appropriate_video_codec_automatically(video_size, &supported_video_codecs_non_vulkan);
-            if(args_parser->settings.video_codec == (gsr_video_codec)-1) {
-                if(args_parser->settings.fallback_cpu_encoding) {
-                    gsr_log(GSR_LOG_LEVEL_WARNING, "gpu encoding is not available on your system or your gpu doesn't support recording at the resolution you are trying to record, trying cpu encoding instead because -fallback-cpu-encoding is enabled. Install the proper vaapi drivers on your system (if supported) if you experience performance issues");
-                    force_cpu_encoding(args_parser);
-                } else {
-                    gsr_log(GSR_LOG_LEVEL_ERROR, "no video encoder was specified and neither h264, hevc nor av1 are supported on your system or you are trying to capture at a resolution higher than your system supports for each codec.");
-                    fprintf(stderr, "  Ensure that you have installed the proper vaapi driver. If your gpu doesn't support video encoding then you can run gpu-screen-recorder with \"-fallback-cpu-encoding yes\" option to use cpu encoding.\n");
-                    _exit(52);
-                }
-            }
-        }
-    }
-
-    if(LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(60, 10, 100) && strcmp(file_extension, "flv") == 0) {
-        if(args_parser->settings.video_codec != GSR_VIDEO_CODEC_H264) {
-            args_parser->settings.video_codec = GSR_VIDEO_CODEC_H264;
-            gsr_log(GSR_LOG_LEVEL_WARNING, "hevc/av1 is not compatible with flv in your outdated version of ffmpeg, falling back to h264 instead.");
-        }
-    } else if(strcmp(file_extension, "m3u8") == 0) {
-        if(video_codec_is_av1(args_parser->settings.video_codec)) {
-            args_parser->settings.video_codec = GSR_VIDEO_CODEC_HEVC;
-            gsr_log(GSR_LOG_LEVEL_WARNING, "av1 is not compatible with hls (m3u8), falling back to hevc instead.");
-        }
-    }
-
-    const AVCodec *codec = pick_video_codec(egl, args_parser, true, low_power, supported_video_codecs);
-
-    const vec2i codec_max_resolution = codec_get_max_resolution(args_parser->settings.video_codec, args_parser->settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
-    if(!codec_supports_resolution(codec_max_resolution, video_size)) {
-        const char *video_codec_name = video_codec_to_string(args_parser->settings.video_codec);
-        gsr_log(GSR_LOG_LEVEL_ERROR, "The max resolution for video codec %s is %dx%d while you are trying to capture at resolution %dx%d. Change capture resolution or video codec and try again", video_codec_name, codec_max_resolution.x, codec_max_resolution.y, video_size.x, video_size.y);
-        _exit(53);
-    }
-
-    return codec;
-}
-
 static std::vector<AudioDeviceData> create_device_audio_inputs(const std::vector<AudioInput> &audio_inputs, AVCodecContext *audio_codec_context, int num_channels, double num_audio_frames_shift, std::vector<AVFilterContext*> &src_filter_ctx, bool use_amix) {
     std::vector<AudioDeviceData> audio_track_audio_devices;
     for(size_t i = 0; i < audio_inputs.size(); ++i) {
@@ -3224,7 +2721,7 @@ int main(int argc, char **argv) {
     const double target_fps = 1.0 / (double)arg_parser.settings.fps;
 
     const bool uses_amix = merged_audio_inputs_should_use_amix(requested_audio_inputs);
-    arg_parser.settings.audio_codec = select_audio_codec_with_fallback(arg_parser.settings.audio_codec, file_extension, uses_amix);
+    arg_parser.settings.audio_codec = select_audio_codec_with_fallback(arg_parser.settings.audio_codec, file_extension.c_str(), uses_amix);
 
     vec2i video_size = {0, 0};
     std::vector<VideoSource> video_sources = create_video_sources(arg_parser, &egl, false, capture_sources, video_size);
@@ -3247,7 +2744,10 @@ int main(int argc, char **argv) {
     }
 
     bool low_power = false;
-    const AVCodec *video_codec_f = select_video_codec_with_fallback(video_size, &arg_parser, file_extension.c_str(), &egl, &low_power);
+    const AVCodec *video_codec_f = nullptr;
+    const int select_video_codec_result = select_video_codec_with_fallback(video_size, &arg_parser.settings, file_extension.c_str(), &egl, &low_power, &video_codec_f);
+    if(select_video_codec_result != GSR_ERROR_OK)
+        _exit(gsr_error_to_exit_code(select_video_codec_result));
 
     const enum AVPixelFormat video_pix_fmt = get_pixel_format(arg_parser.settings.video_codec, egl.gpu_info.vendor, arg_parser.settings.video_encoder == GSR_VIDEO_ENCODER_HW_CPU);
     AVCodecContext *video_codec_context = create_video_codec_context(video_pix_fmt, video_codec_f, &egl, &arg_parser.settings, video_size.x, video_size.y);
@@ -3275,7 +2775,7 @@ int main(int argc, char **argv) {
         _exit(1);
     }
 
-    gsr_video_encoder *video_encoder = create_video_encoder(&egl, arg_parser);
+    gsr_video_encoder *video_encoder = create_video_encoder(&egl, &arg_parser.settings);
     if(!video_encoder) {
         gsr_log(GSR_LOG_LEVEL_ERROR, "failed to create video encoder");
         _exit(1);
diff --git a/src/recorder/codec_select.c b/src/recorder/codec_select.c
new file mode 100644
index 0000000..d3286ec
--- /dev/null
+++ b/src/recorder/codec_select.c
@@ -0,0 +1,525 @@
+#include "../../include/recorder/codec_select.h"
+#include "../../include/recorder/error.h"
+#include "../../include/encoder/video/nvenc.h"
+#include "../../include/encoder/video/vaapi.h"
+#include "../../include/encoder/video/vulkan.h"
+#include "../../include/encoder/video/software.h"
+#include "../../include/codec_query/nvenc.h"
+#include "../../include/codec_query/vaapi.h"
+#include "../../include/codec_query/vulkan.h"
+#include "../../include/log.h"
+
+#include <libavformat/avformat.h>
+
+#include <string.h>
+#include <assert.h>
+
+gsr_video_encoder* create_video_encoder(gsr_egl *egl, const gsr_recorder_settings *settings) {
+    const gsr_color_depth color_depth = video_codec_to_bit_depth(settings->video_codec);
+    gsr_video_encoder *video_encoder = NULL;
+
+    if(settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU) {
+        gsr_video_encoder_software_params params;
+        params.egl = egl;
+        params.color_depth = color_depth;
+        video_encoder = gsr_video_encoder_software_create(&params);
+        return video_encoder;
+    }
+
+    if(video_codec_is_vulkan(settings->video_codec)) {
+        gsr_video_encoder_vulkan_params params;
+        params.egl = egl;
+        params.color_depth = color_depth;
+        video_encoder = gsr_video_encoder_vulkan_create(&params);
+        return video_encoder;
+    }
+
+    switch(egl->gpu_info.vendor) {
+        case GSR_GPU_VENDOR_AMD:
+        case GSR_GPU_VENDOR_INTEL:
+        case GSR_GPU_VENDOR_BROADCOM: {
+            gsr_video_encoder_vaapi_params params;
+            params.egl = egl;
+            params.color_depth = color_depth;
+            video_encoder = gsr_video_encoder_vaapi_create(&params);
+            break;
+        }
+        case GSR_GPU_VENDOR_NVIDIA: {
+            gsr_video_encoder_nvenc_params params;
+            params.egl = egl;
+            params.color_depth = color_depth;
+            video_encoder = gsr_video_encoder_nvenc_create(&params);
+            break;
+        }
+    }
+
+    return video_encoder;
+}
+
+bool get_supported_video_codecs(gsr_egl *egl, gsr_video_codec video_codec, bool use_software_video_encoder, bool cleanup, gsr_supported_video_codecs *video_codecs) {
+    memset(video_codecs, 0, sizeof(*video_codecs));
+
+    if(use_software_video_encoder) {
+        video_codecs->h264.supported = avcodec_find_encoder_by_name("libx264");
+        video_codecs->h264.max_resolution = (vec2i){4096, 2304};
+        return true;
+    }
+
+    if(video_codec_is_vulkan(video_codec))
+        return gsr_get_supported_video_codecs_vulkan(video_codecs, egl->card_path, &egl->vulkan_device_index, cleanup);
+
+    switch(egl->gpu_info.vendor) {
+        case GSR_GPU_VENDOR_AMD:
+        case GSR_GPU_VENDOR_INTEL:
+        case GSR_GPU_VENDOR_BROADCOM:
+            return gsr_get_supported_video_codecs_vaapi(video_codecs, egl->card_path, cleanup);
+        case GSR_GPU_VENDOR_NVIDIA:
+            return gsr_get_supported_video_codecs_nvenc(video_codecs, cleanup);
+    }
+
+    return false;
+}
+
+static const AVCodec* get_ffmpeg_video_codec(gsr_video_codec video_codec, gsr_gpu_vendor vendor) {
+    switch(video_codec) {
+        case GSR_VIDEO_CODEC_H264:
+            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "h264_nvenc" : "h264_vaapi");
+        case GSR_VIDEO_CODEC_HEVC:
+        case GSR_VIDEO_CODEC_HEVC_HDR:
+        case GSR_VIDEO_CODEC_HEVC_10BIT:
+            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "hevc_nvenc" : "hevc_vaapi");
+        case GSR_VIDEO_CODEC_AV1:
+        case GSR_VIDEO_CODEC_AV1_HDR:
+        case GSR_VIDEO_CODEC_AV1_10BIT:
+            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "av1_nvenc" : "av1_vaapi");
+        case GSR_VIDEO_CODEC_VP8:
+            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp8_nvenc" : "vp8_vaapi");
+        case GSR_VIDEO_CODEC_VP9:
+            return avcodec_find_encoder_by_name(vendor == GSR_GPU_VENDOR_NVIDIA ? "vp9_nvenc" : "vp9_vaapi");
+        case GSR_VIDEO_CODEC_H264_VULKAN:
+            return avcodec_find_encoder_by_name("h264_vulkan");
+        case GSR_VIDEO_CODEC_HEVC_VULKAN:
+        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:
+        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN:
+            return avcodec_find_encoder_by_name("hevc_vulkan");
+        case GSR_VIDEO_CODEC_AV1_VULKAN:
+        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:
+        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN:
+            return avcodec_find_encoder_by_name("av1_vulkan");
+    }
+    return NULL;
+}
+
+void set_supported_video_codecs_ffmpeg(gsr_supported_video_codecs *supported_video_codecs, gsr_supported_video_codecs *supported_video_codecs_vulkan, gsr_gpu_vendor vendor) {
+    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_H264, vendor)) {
+        supported_video_codecs->h264.supported = false;
+    }
+
+    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_HEVC, vendor)) {
+        supported_video_codecs->hevc.supported = false;
+        supported_video_codecs->hevc_hdr.supported = false;
+        supported_video_codecs->hevc_10bit.supported = false;
+    }
+
+    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_AV1, vendor)) {
+        supported_video_codecs->av1.supported = false;
+        supported_video_codecs->av1_hdr.supported = false;
+        supported_video_codecs->av1_10bit.supported = false;
+    }
+
+    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_VP8, vendor)) {
+        supported_video_codecs->vp8.supported = false;
+    }
+
+    if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_VP9, vendor)) {
+        supported_video_codecs->vp9.supported = false;
+    }
+
+    if(supported_video_codecs_vulkan) {
+        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_H264_VULKAN, vendor)) {
+            supported_video_codecs_vulkan->h264.supported = false;
+        }
+
+        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_HEVC_VULKAN, vendor)) {
+            supported_video_codecs_vulkan->hevc.supported = false;
+            supported_video_codecs_vulkan->hevc_hdr.supported = false;
+            supported_video_codecs_vulkan->hevc_10bit.supported = false;
+        }
+
+        if(!get_ffmpeg_video_codec(GSR_VIDEO_CODEC_AV1_VULKAN, vendor)) {
+            supported_video_codecs_vulkan->av1.supported = false;
+            supported_video_codecs_vulkan->av1_hdr.supported = false;
+            supported_video_codecs_vulkan->av1_10bit.supported = false;
+        }
+    }
+}
+
+gsr_audio_codec select_audio_codec_with_fallback(gsr_audio_codec audio_codec, const char *file_extension, bool uses_amix) {
+    switch(audio_codec) {
+        case GSR_AUDIO_CODEC_AAC: {
+            if(strcmp(file_extension, "webm") == 0) {
+                //audio_codec_to_use = "opus";
+                audio_codec = GSR_AUDIO_CODEC_OPUS;
+                gsr_log(GSR_LOG_LEVEL_WARNING, ".webm files only support opus audio codec, changing audio codec from aac to opus");
+            }
+            break;
+        }
+        case GSR_AUDIO_CODEC_OPUS: {
+            if(strcmp(file_extension, "mp4") != 0 && strcmp(file_extension, "mkv") != 0 && strcmp(file_extension, "webm") != 0 && strcmp(file_extension, "ts") != 0 && strcmp(file_extension, "whip") != 0) {
+                //audio_codec_to_use = "aac";
+                audio_codec = GSR_AUDIO_CODEC_AAC;
+                gsr_log(GSR_LOG_LEVEL_WARNING, "opus audio codec is only supported by .mp4, .mkv, .webm and .ts files, falling back to aac instead");
+            }
+            break;
+        }
+        case GSR_AUDIO_CODEC_FLAC: {
+            // TODO: Also check mpegts?
+            if(strcmp(file_extension, "webm") == 0) {
+                //audio_codec_to_use = "opus";
+                audio_codec = GSR_AUDIO_CODEC_OPUS;
+                gsr_log(GSR_LOG_LEVEL_WARNING, ".webm files only support opus audio codec, changing audio codec from flac to opus");
+            } else if(strcmp(file_extension, "mp4") != 0 && strcmp(file_extension, "mkv") != 0) {
+                //audio_codec_to_use = "aac";
+                audio_codec = GSR_AUDIO_CODEC_AAC;
+                gsr_log(GSR_LOG_LEVEL_WARNING, "flac audio codec is only supported by .mp4 and .mkv files, falling back to aac instead");
+            } else if(uses_amix) {
+                // TODO: remove this? is it true anymore?
+                //audio_codec_to_use = "opus";
+                audio_codec = GSR_AUDIO_CODEC_OPUS;
+                gsr_log(GSR_LOG_LEVEL_WARNING, "flac audio codec is not supported when mixing audio sources, falling back to opus instead");
+            }
+            break;
+        }
+    }
+    return audio_codec;
+}
+
+static bool video_codec_only_supports_low_power_mode(const gsr_supported_video_codecs *supported_video_codecs, gsr_video_codec video_codec) {
+    switch(video_codec) {
+        case GSR_VIDEO_CODEC_H264:              return supported_video_codecs->h264.low_power;
+        case GSR_VIDEO_CODEC_HEVC:              return supported_video_codecs->hevc.low_power;
+        case GSR_VIDEO_CODEC_HEVC_HDR:          return supported_video_codecs->hevc_hdr.low_power;
+        case GSR_VIDEO_CODEC_HEVC_10BIT:        return supported_video_codecs->hevc_10bit.low_power;
+        case GSR_VIDEO_CODEC_AV1:               return supported_video_codecs->av1.low_power;
+        case GSR_VIDEO_CODEC_AV1_HDR:           return supported_video_codecs->av1_hdr.low_power;
+        case GSR_VIDEO_CODEC_AV1_10BIT:         return supported_video_codecs->av1_10bit.low_power;
+        case GSR_VIDEO_CODEC_VP8:               return supported_video_codecs->vp8.low_power;
+        case GSR_VIDEO_CODEC_VP9:               return supported_video_codecs->vp9.low_power;
+        case GSR_VIDEO_CODEC_H264_VULKAN:       return supported_video_codecs->h264.low_power;
+        case GSR_VIDEO_CODEC_HEVC_VULKAN:       return supported_video_codecs->hevc.low_power;
+        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:   return supported_video_codecs->hevc_hdr.low_power;
+        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: return supported_video_codecs->hevc_10bit.low_power;
+        case GSR_VIDEO_CODEC_AV1_VULKAN:        return supported_video_codecs->av1.low_power;
+        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:    return supported_video_codecs->av1_hdr.low_power;
+        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN:  return supported_video_codecs->av1_10bit.low_power;
+    }
+    return false;
+}
+
+static const AVCodec* get_av_codec_if_supported(gsr_video_codec video_codec, gsr_egl *egl, bool use_software_video_encoder, const gsr_supported_video_codecs *supported_video_codecs) {
+    switch(video_codec) {
+        case GSR_VIDEO_CODEC_H264:
+        case GSR_VIDEO_CODEC_H264_VULKAN: {
+            if(use_software_video_encoder)
+                return avcodec_find_encoder_by_name("libx264");
+            else if(supported_video_codecs->h264.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC:
+        case GSR_VIDEO_CODEC_HEVC_VULKAN: {
+            if(supported_video_codecs->hevc.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC_HDR:
+        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN: {
+            if(supported_video_codecs->hevc_hdr.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC_10BIT:
+         case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
+            if(supported_video_codecs->hevc_10bit.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1:
+        case GSR_VIDEO_CODEC_AV1_VULKAN: {
+            if(supported_video_codecs->av1.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1_HDR:
+        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN: {
+            if(supported_video_codecs->av1_hdr.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1_10BIT:
+        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
+            if(supported_video_codecs->av1_10bit.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_VP8: {
+            if(supported_video_codecs->vp8.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+        case GSR_VIDEO_CODEC_VP9: {
+            if(supported_video_codecs->vp9.supported)
+                return get_ffmpeg_video_codec(video_codec, egl->gpu_info.vendor);
+            break;
+        }
+    }
+    return NULL;
+}
+
+vec2i codec_get_max_resolution(gsr_video_codec video_codec, bool use_software_video_encoder, const gsr_supported_video_codecs *supported_video_codecs) {
+    switch(video_codec) {
+        case GSR_VIDEO_CODEC_H264:
+        case GSR_VIDEO_CODEC_H264_VULKAN: {
+            if(use_software_video_encoder)
+                return (vec2i){4096, 2304};
+            else if(supported_video_codecs->h264.supported)
+                return supported_video_codecs->h264.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC:
+        case GSR_VIDEO_CODEC_HEVC_VULKAN: {
+            if(supported_video_codecs->hevc.supported)
+                return supported_video_codecs->hevc.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC_HDR:
+        case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN: {
+            if(supported_video_codecs->hevc_hdr.supported)
+                return supported_video_codecs->hevc_hdr.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_HEVC_10BIT:
+        case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
+            if(supported_video_codecs->hevc_10bit.supported)
+                return supported_video_codecs->hevc_10bit.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1:
+        case GSR_VIDEO_CODEC_AV1_VULKAN: {
+            if(supported_video_codecs->av1.supported)
+                return supported_video_codecs->av1.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1_HDR:
+        case GSR_VIDEO_CODEC_AV1_HDR_VULKAN: {
+            if(supported_video_codecs->av1_hdr.supported)
+                return supported_video_codecs->av1_hdr.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_AV1_10BIT:
+        case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
+            if(supported_video_codecs->av1_10bit.supported)
+                return supported_video_codecs->av1_10bit.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_VP8: {
+            if(supported_video_codecs->vp8.supported)
+                return supported_video_codecs->vp8.max_resolution;
+            break;
+        }
+        case GSR_VIDEO_CODEC_VP9: {
+            if(supported_video_codecs->vp9.supported)
+                return supported_video_codecs->vp9.max_resolution;
+            break;
+        }
+    }
+    return (vec2i){0, 0};
+}
+
+bool codec_supports_resolution(vec2i codec_max_resolution, vec2i capture_resolution) {
+    if(codec_max_resolution.x == 0 || codec_max_resolution.y == 0)
+        return true;
+    return codec_max_resolution.x >= capture_resolution.x && codec_max_resolution.y >= capture_resolution.y;
+}
+
+static void print_codec_error(gsr_video_codec video_codec) {
+    if(video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO)
+        video_codec = GSR_VIDEO_CODEC_H264;
+
+    const char *video_codec_name = video_codec_to_string(video_codec);
+    gsr_log(GSR_LOG_LEVEL_ERROR, "your gpu does not support '%s' video codec. If you are sure that your gpu does support '%s' video encoding and you are using an AMD/Intel GPU,\n  then make sure you have installed the GPU specific vaapi packages (intel-media-driver, libva-intel-driver, libva-mesa-driver and linux-firmware).\n  It's also possible that your distro has disabled hardware accelerated video encoding for '%s' video codec.\n  This may be the case on corporate distros such as Manjaro, Fedora or OpenSUSE.\n  You can test this by running 'vainfo | grep VAEntrypointEncSlice' to see if it matches any H264/HEVC/AV1/VP8/VP9 profile.\n  On such distros, you need to manually install mesa from source to enable H264/HEVC hardware acceleration, or use a more user friendly distro. Alternatively record with AV1 if supported by your GPU.\n  You can alternatively use the flatpak version of GPU Screen Recorder (https://flathub.org/apps/com.dec05eba.gpu_screen_recorder) which bypasses system issues with patented H264/HEVC codecs.\n  If your GPU doesn't support hardware accelerated video encoding then you can use '-fallback-cpu-encoding yes' option to encode with your cpu instead.", video_codec_name, video_codec_name, video_codec_name);
+}
+
+void force_cpu_encoding(gsr_recorder_settings *settings) {
+    settings->video_codec = GSR_VIDEO_CODEC_H264;
+    settings->video_encoder = GSR_VIDEO_ENCODER_HW_CPU;
+    if(settings->bitrate_mode == GSR_BITRATE_MODE_VBR) {
+        gsr_log(GSR_LOG_LEVEL_WARNING, "bitrate mode has been forcefully set to qp because software encoding option doesn't support vbr option");
+        settings->bitrate_mode = GSR_BITRATE_MODE_QP;
+    }
+}
+
+static int pick_video_codec(gsr_egl *egl, gsr_recorder_settings *settings, bool use_fallback_codec, bool *low_power, gsr_supported_video_codecs *supported_video_codecs, const AVCodec **video_codec) {
+    // TODO: software encoder for hevc, av1, vp8 and vp9
+    *video_codec = NULL;
+    *low_power = false;
+    const AVCodec *video_codec_f = get_av_codec_if_supported(settings->video_codec, egl, settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
+
+    if(!video_codec_f && use_fallback_codec && settings->video_encoder != GSR_VIDEO_ENCODER_HW_CPU) {
+        switch(settings->video_codec) {
+            case GSR_VIDEO_CODEC_H264: {
+                gsr_log(GSR_LOG_LEVEL_ERROR, "selected video codec h264 is not supported by your hardware");
+                if(settings->fallback_cpu_encoding) {
+                    gsr_log(GSR_LOG_LEVEL_WARNING, "gpu encoding is not available on your system, trying cpu encoding instead because -fallback-cpu-encoding is enabled. Install the proper vaapi drivers on your system (if supported) if you experience performance issues");
+                    force_cpu_encoding(settings);
+                }
+                break;
+            }
+            case GSR_VIDEO_CODEC_HEVC:
+            case GSR_VIDEO_CODEC_HEVC_HDR:
+            case GSR_VIDEO_CODEC_HEVC_10BIT: {
+                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec hevc is not supported by your hardware, trying h264 instead");
+                settings->video_codec = GSR_VIDEO_CODEC_H264;
+                return pick_video_codec(egl, settings, true, low_power, supported_video_codecs, video_codec);
+            }
+            case GSR_VIDEO_CODEC_AV1:
+            case GSR_VIDEO_CODEC_AV1_HDR:
+            case GSR_VIDEO_CODEC_AV1_10BIT: {
+                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec av1 is not supported by your hardware, trying h264 instead");
+                settings->video_codec = GSR_VIDEO_CODEC_H264;
+                return pick_video_codec(egl, settings, true, low_power, supported_video_codecs, video_codec);
+            }
+            case GSR_VIDEO_CODEC_VP8:
+            case GSR_VIDEO_CODEC_VP9:
+                // TODO: Cant fallback to other codec because webm only supports vp8/vp9
+                break;
+            case GSR_VIDEO_CODEC_H264_VULKAN: {
+                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec h264_vulkan is not supported by your hardware, trying h264 instead");
+                settings->video_codec = GSR_VIDEO_CODEC_H264;
+                // Need to do a query again because this time it's without vulkan
+                if(!get_supported_video_codecs(egl, settings->video_codec, false, true, supported_video_codecs)) {
+                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
+                    print_codec_error(settings->video_codec);
+                    return GSR_ERROR_VIDEO_CODEC_QUERY_FAILED;
+                }
+                return pick_video_codec(egl, settings, true, low_power, supported_video_codecs, video_codec);
+            }
+            case GSR_VIDEO_CODEC_HEVC_VULKAN:
+            case GSR_VIDEO_CODEC_HEVC_HDR_VULKAN:
+            case GSR_VIDEO_CODEC_HEVC_10BIT_VULKAN: {
+                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec hevc_vulkan is not supported by your hardware, trying hevc instead");
+                settings->video_codec = GSR_VIDEO_CODEC_HEVC;
+                // Need to do a query again because this time it's without vulkan
+                if(!get_supported_video_codecs(egl, settings->video_codec, false, true, supported_video_codecs)) {
+                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
+                    print_codec_error(settings->video_codec);
+                    return GSR_ERROR_VIDEO_CODEC_QUERY_FAILED;
+                }
+                return pick_video_codec(egl, settings, true, low_power, supported_video_codecs, video_codec);
+            }
+            case GSR_VIDEO_CODEC_AV1_VULKAN:
+            case GSR_VIDEO_CODEC_AV1_HDR_VULKAN:
+            case GSR_VIDEO_CODEC_AV1_10BIT_VULKAN: {
+                gsr_log(GSR_LOG_LEVEL_WARNING, "selected video codec av1_vulkan is not supported by your hardware, trying av1 instead");
+                settings->video_codec = GSR_VIDEO_CODEC_AV1;
+                // Need to do a query again because this time it's without vulkan
+                if(!get_supported_video_codecs(egl, settings->video_codec, false, true, supported_video_codecs)) {
+                    gsr_log(GSR_LOG_LEVEL_ERROR, "failed to query for supported video codecs");
+                    print_codec_error(settings->video_codec);
+                    return GSR_ERROR_VIDEO_CODEC_QUERY_FAILED;
+                }
+                return pick_video_codec(egl, settings, true, low_power, supported_video_codecs, video_codec);
+            }
+        }
+
+        video_codec_f = get_av_codec_if_supported(settings->video_codec, egl, settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
+    }
+
+    if(!video_codec_f) {
+        print_codec_error(settings->video_codec);
+        return GSR_ERROR_VIDEO_CODEC_UNSUPPORTED;
+    }
+
+    *low_power = video_codec_only_supports_low_power_mode(supported_video_codecs, settings->video_codec);
+    *video_codec = video_codec_f;
+    return GSR_ERROR_OK;
+}
+
+gsr_video_codec select_appropriate_video_codec_automatically(vec2i video_size, const gsr_supported_video_codecs *supported_video_codecs) {
+    if(supported_video_codecs->h264.supported && codec_supports_resolution(supported_video_codecs->h264.max_resolution, video_size)) {
+        gsr_log(GSR_LOG_LEVEL_INFO, "using h264 encoder because a codec was not specified");
+        return GSR_VIDEO_CODEC_H264;
+    } else if(supported_video_codecs->hevc.supported && codec_supports_resolution(supported_video_codecs->hevc.max_resolution, video_size)) {
+        gsr_log(GSR_LOG_LEVEL_INFO, "using hevc encoder because a codec was not specified and h264 supported max resolution (%dx%d) is less than the capture resolution (%dx%d)", supported_video_codecs->h264.max_resolution.x, supported_video_codecs->h264.max_resolution.y,
+            video_size.x, video_size.y);
+        return GSR_VIDEO_CODEC_HEVC;
+    } else if(supported_video_codecs->av1.supported && codec_supports_resolution(supported_video_codecs->av1.max_resolution, video_size)) {
+        gsr_log(GSR_LOG_LEVEL_INFO, "using av1 encoder because a codec was not specified and hevc supported max resolution (%dx%d) is less than the capture resolution (%dx%d)", supported_video_codecs->hevc.max_resolution.x, supported_video_codecs->hevc.max_resolution.y,
+            video_size.x, video_size.y);
+        return GSR_VIDEO_CODEC_AV1;
+    } else {
+        return (gsr_video_codec)-1;
+    }
+}
+
+int select_video_codec_with_fallback(vec2i video_size, gsr_recorder_settings *settings, const char *file_extension, gsr_egl *egl, bool *low_power, const AVCodec **video_codec) {
+    gsr_supported_video_codecs supported_video_codecs_non_vulkan;
+    get_supported_video_codecs(egl, settings->video_codec, settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, true, &supported_video_codecs_non_vulkan);
+
+    gsr_supported_video_codecs supported_video_codecs_vulkan = supported_video_codecs_non_vulkan;
+    set_supported_video_codecs_ffmpeg(&supported_video_codecs_non_vulkan, &supported_video_codecs_vulkan, egl->gpu_info.vendor);
+
+    gsr_supported_video_codecs *supported_video_codecs = video_codec_is_vulkan(settings->video_codec)
+        ? &supported_video_codecs_vulkan
+        : &supported_video_codecs_non_vulkan;
+
+    const bool video_codec_auto = settings->video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO;
+    if(video_codec_auto) {
+        if(strcmp(file_extension, "webm") == 0) {
+            gsr_log(GSR_LOG_LEVEL_INFO, "using vp8 encoder because a codec was not specified and the file extension is .webm");
+            settings->video_codec = GSR_VIDEO_CODEC_VP8;
+        } else if(settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU) {
+            gsr_log(GSR_LOG_LEVEL_INFO, "using h264 encoder because a codec was not specified");
+            settings->video_codec = GSR_VIDEO_CODEC_H264;
+        } else if(settings->video_encoder != GSR_VIDEO_ENCODER_HW_CPU) {
+            settings->video_codec = select_appropriate_video_codec_automatically(video_size, &supported_video_codecs_non_vulkan);
+            if(settings->video_codec == (gsr_video_codec)-1) {
+                if(settings->fallback_cpu_encoding) {
+                    gsr_log(GSR_LOG_LEVEL_WARNING, "gpu encoding is not available on your system or your gpu doesn't support recording at the resolution you are trying to record, trying cpu encoding instead because -fallback-cpu-encoding is enabled. Install the proper vaapi drivers on your system (if supported) if you experience performance issues");
+                    force_cpu_encoding(settings);
+                } else {
+                    gsr_log(GSR_LOG_LEVEL_ERROR, "no video encoder was specified and neither h264, hevc nor av1 are supported on your system or you are trying to capture at a resolution higher than your system supports for each codec.\n"
+                        "  Ensure that you have installed the proper vaapi driver. If your gpu doesn't support video encoding then you can run gpu-screen-recorder with \"-fallback-cpu-encoding yes\" option to use cpu encoding.");
+                    return GSR_ERROR_NO_VIDEO_CODEC_AVAILABLE;
+                }
+            }
+        }
+    }
+
+    if(LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(60, 10, 100) && strcmp(file_extension, "flv") == 0) {
+        if(settings->video_codec != GSR_VIDEO_CODEC_H264) {
+            settings->video_codec = GSR_VIDEO_CODEC_H264;
+            gsr_log(GSR_LOG_LEVEL_WARNING, "hevc/av1 is not compatible with flv in your outdated version of ffmpeg, falling back to h264 instead.");
+        }
+    } else if(strcmp(file_extension, "m3u8") == 0) {
+        if(video_codec_is_av1(settings->video_codec)) {
+            settings->video_codec = GSR_VIDEO_CODEC_HEVC;
+            gsr_log(GSR_LOG_LEVEL_WARNING, "av1 is not compatible with hls (m3u8), falling back to hevc instead.");
+        }
+    }
+
+    const AVCodec *codec = NULL;
+    const int pick_codec_result = pick_video_codec(egl, settings, true, low_power, supported_video_codecs, &codec);
+    if(pick_codec_result != GSR_ERROR_OK)
+        return pick_codec_result;
+
+    const vec2i codec_max_resolution = codec_get_max_resolution(settings->video_codec, settings->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
+    if(!codec_supports_resolution(codec_max_resolution, video_size)) {
+        const char *video_codec_name = video_codec_to_string(settings->video_codec);
+        gsr_log(GSR_LOG_LEVEL_ERROR, "The max resolution for video codec %s is %dx%d while you are trying to capture at resolution %dx%d. Change capture resolution or video codec and try again", video_codec_name, codec_max_resolution.x, codec_max_resolution.y, video_size.x, video_size.y);
+        return GSR_ERROR_VIDEO_CODEC_RESOLUTION_UNSUPPORTED;
+    }
+
+    *video_codec = codec;
+    return GSR_ERROR_OK;
+}