path: root/gpu-screen-recorder.1

.TH GPU-SCREEN-RECORDER 1 "2025-12-22" "5.10.2" "GPU Screen Recorder Manual"
.SH NAME
gpu-screen-recorder \- The fastest screen recording tool for Linux
.SH SYNOPSIS
.B gpu-screen-recorder
.RI [ options ]
.B \-w
.I window_id|monitor|focused|portal|region
.RI [ options ]
.B \-o
.I output_file
.PP
.B gpu-screen-recorder
.B \-\-help
|
.B \-\-version
|
.B \-\-list\-capture\-options
|
.B \-\-list\-audio\-devices
|
.B \-\-list\-application\-audio
|
.B \-\-info
.SH DESCRIPTION
.B gpu-screen-recorder
is the fastest screen recording tool for Linux. It uses the GPU
only to record the screen to minimize system performance impact. It supports recording,
live streaming, instant replay (similar to NVIDIA ShadowPlay), and
screenshot capture. The tool works on both X11 and Wayland with AMD,
Intel, and NVIDIA graphics cards.
.PP
Key features include:
.RS
.IP \(bu 3
GPU-accelerated encoding using H264, HEVC, AV1, VP8, or VP9 codecs
.IP \(bu 3
Support for HDR recording (HEVC HDR and AV1 HDR)
.IP \(bu 3
Instant replay buffer (last N seconds recording)
.IP \(bu 3
Live streaming capabilities
.IP \(bu 3
Audio recording from devices and applications (PipeWire required for app audio)
.IP \(bu 3
Plugin system for custom graphics overlay
.IP \(bu 3
Minimal performance impact compared to traditional screen recorders
.RE
.SH OPTIONS
.SS Capture Options
.TP
.BI \-w " window_id|monitor|focused|portal|region"
Specify what to record. Valid values are:
.RS
.IP \(bu 3
.B window
- Record a specific window (use window ID, X11 only)
.IP \(bu 3
.B screen
- Record the first monitor found
.IP \(bu 3
.B screen\-direct
- NVIDIA X11 only, for VRR/G-SYNC support (not recommended due to driver issues)
.IP \(bu 3
.B focused
- Record the currently focused window (X11 only)
.IP \(bu 3
.B portal
- Use xdg-desktop-portal with PipeWire (Wayland only)
.IP \(bu 3
.B region
- Record a specific region (use with
.B \-region
option)
.IP \(bu 3
Monitor name (e.g.,
.BR DP\-1 )
- Record specific monitor
.RE
Run
.B \-\-list\-capture\-options
to see available options.
.TP
.BI \-region " WxH+X+Y"
Specify region to capture when using
.BR \-w " region."
Format is width x height + X offset + Y offset. Use 0x0 for full monitor.

It is compatible with tools such as slop (X11) and slurp (Wayland).
.TP
.BI \-c " container_format"
Container format (mp4, mkv, flv, webm). Defaults to extension from
.B \-o
filename.
.TP
.BI \-s " WxH"
Output resolution limit (e.g., 1920x1080). Use 0x0 for original resolution.
Required for
.BR \-w " focused."
.TP
.BI \-f " fps"
Frame rate (default: 60). For variable frame rate mode, this is maximum FPS.
.TP
.BI \-cursor " yes|no"
Record cursor (default: yes).
.SS Audio Options
.TP
.BI \-a " audio_source"
Audio device or application to record. Can be specified multiple times.
Formats:
.RS
.IP \(bu 3
.B default_output
- Default output device
.IP \(bu 3
.B default_input
- Default input device
.IP \(bu 3
.B device:name
- Specific device
.IP \(bu 3
.B app:name
- Application audio (case-insensitive)
.IP \(bu 3
.B app\-inverse:name
- All applications except specified
.IP \(bu 3
Combine sources with | (e.g.,
.BR "default_output|app:firefox" )
.RE
.TP
.BI \-ac " aac|opus|flac"
Audio codec (default: opus for mp4/mkv, aac otherwise). FLAC temporarily disabled.
.TP
.BI \-ab " bitrate"
Audio bitrate in kbps (default: 128 for opus/flac, 160 for aac). 0 = automatic.
.SS Video Quality Options
.TP
.BI \-k " codec"
Video codec:
.BR auto ", " h264 ", " hevc ", " av1 ", " vp8 ", " vp9 ", " hevc_hdr ", " av1_hdr ", " hevc_10bit ", " av1_10bit
(default: auto → h264). HDR options not available on X11 or portal capture.

10-bit capture reduces banding but may not be supported properly by all video players.
.TP
.BI \-q " quality"
Quality preset (medium, high, very_high, ultra) for QP/VBR mode, or bitrate (kbps) for CBR mode (default: very_high).
.TP
.BI \-bm " auto|qp|vbr|cbr"
Bitrate mode (default: auto → qp). CBR recommended for replay buffer.
.TP
.BI \-fm " cfr|vfr|content"
Frame rate mode: constant, variable, or match content (default: vfr). Content mode only on X11 or portal.

Content mode syncs video to the captured content and is recommended for smoothest video when the game is running
at the same frame rate or lower than what you are trying to record at.
.TP
.BI \-cr " limited|full"
Color range (default: limited). Full range may cause issues with some video players/websites.
.TP
.BI \-tune " performance|quality"
Encoding tune (default: performance). Currently NVIDIA only.
.TP
.BI \-keyint " seconds"
Keyframe interval in seconds (default: 2.0). Affects seeking precision.
.TP
.BI \-encoder " gpu|cpu"
Encoding device (default: gpu). CPU encoding only for H264.
.TP
.BI \-fallback\-cpu\-encoding " yes|no"
Fallback to CPU if GPU encoding unavailable (default: no).
.SS Replay Buffer Options
.TP
.BI \-r " seconds"
Replay buffer duration (2-86400 seconds). When set, only saves on command.
.TP
.BI \-replay\-storage " ram|disk"
Buffer storage location (default: ram). Disk mode may reduce SSD lifespan.
.TP
.BI \-restart\-replay\-on\-save " yes|no"
Clear buffer after saving replay (default: no).
.TP
.BI \-df " yes|no"
Organize replays in date-based folders (default: no).
.SS Advanced Options
.TP
.BI \-oc " yes|no"
Overclock NVIDIA memory (X11 only). Requires Coolbits=12. Use at own risk.
.TP
.BI \-p " plugin.so"
Load plugin (.so file). Can be specified multiple times.
.TP
.BI \-sc " script_path"
Script to run after saving video. Receives filepath and type ("regular", "replay", "screenshot").
.TP
.BI \-restore\-portal\-session " yes|no"
Restore previous portal session (Wayland portal, default: no).
.TP
.BI \-portal\-session\-token\-filepath " path"
Portal session token file (default: ~/.config/gpu-screen-recorder/restore_token).
.TP
.BI \-gl\-debug " yes|no"
OpenGL debug output (default: no).
.TP
.BI \-v " yes|no"
Print FPS and damage info (default: yes).
.SS Output Options
.TP
.BI \-o " output"
Output file path (or directory for replay mode). Required except when outputting to stdout.
.TP
.BI \-ro " directory"
Output directory for regular recordings during replay/streaming mode.
.SS Information Commands
.TP
.B \-\-help
Show help message.
.TP
.B \-\-version
Show version (5.10.2).
.TP
.B \-\-info
Show system info (codecs, capture options).
.TP
.B \-\-list\-capture\-options
List available windows and monitors.
.TP
.B \-\-list\-audio\-devices
List PulseAudio devices.
.TP
.B \-\-list\-application\-audio
List applications for audio capture.
.SH SIGNALS
GPU Screen Recorder can be controlled via signals:
.TP
.B SIGINT (Ctrl+C)
Stop and save recording (stop without save in replay mode).
.TP
.B SIGUSR1
Save replay (replay mode only).
.TP
.B SIGUSR2
Pause/unpause recording (not for streaming/replay).
.TP
.B SIGRTMIN
Start/stop regular recording during replay/streaming.
.TP
.B SIGRTMIN+1
Save last 10 seconds (replay mode).
.TP
.B SIGRTMIN+2
Save last 30 seconds (replay mode).
.TP
.B SIGRTMIN+3
Save last 60 seconds (replay mode).
.TP
.B SIGRTMIN+4
Save last 5 minutes (replay mode).
.TP
.B SIGRTMIN+5
Save last 10 minutes (replay mode).
.TP
.B SIGRTMIN+6
Save last 30 minutes (replay mode).
.PP
Use
.B pkill
to send signals (e.g.,
.BR "pkill -SIGUSR1 -f gpu-screen-recorder" ).
.SH EXAMPLES
Record monitor at 60 FPS with desktop audio:
.PP
.nf
.RS
gpu-screen-recorder -w screen -f 60 -a default_output -o video.mp4
.RE
.fi
.PP
Record monitor at 60 FPS with desktop audio and microphone:
.PP
.nf
.RS
gpu-screen-recorder -w screen -f 60 -a "default_output|default_input" -o video.mp4
.RE
.fi
.PP
Record specific window (X11 only):
.PP
.nf
.RS
gpu-screen-recorder -w $(xdotool selectwindow) -f 60 -o video.mp4
.RE
.fi
.PP
Instant replay (last 60 seconds):
.PP
.nf
.RS
gpu-screen-recorder -w screen -f 60 -c mkv -r 60 -o ~/Videos
.RE
.fi
.PP
Record region using slop:
.PP
.nf
.RS
gpu-screen-recorder -w region -region $(slop) -o video.mp4
.RE
.fi
.PP
Record region using slurp:
.PP
.nf
.RS
gpu-screen-recorder -w region -region $(slurp -f "%wx%h+%x+%y") -o video.mp4
.RE
.fi
.PP
Instant replay and launch a script when saving replay
.PP
.nf
.RS
gpu-screen-recorder -w screen -f 60 -c mkv -r 60 -sc ./script.sh -o ~/Videos
.RE
.fi
.PP
Stream to Twitch:
.PP
.nf
.RS
gpu-screen-recorder -w screen -f 60 -a default_output -o "rtmp://live.twitch.tv/app/stream_key"
.RE
.fi
.PP
Take screenshot:
.PP
.nf
.RS
gpu-screen-recorder -w screen -o screenshot.jpg
.RE
.fi
.SH FILES
.TP
.I ~/.config/gpu-screen-recorder.env
Environment variables for systemd service (optional).
.TP
.I /usr/lib/modprobe.d/gsr-nvidia.conf
NVIDIA suspend/resume fix.
.TP
.I ~/.config/gpu-screen-recorder/restore_token
Portal session token storage (default location).
.SH TIPS
.IP \(bu 3
Some video editors don't support videos in variable frame rate mode.

Change video container to .mkv or capture in constant frame rate mode instead to workaround this issue
.IP \(bu 3
Variable frame rate may cause issues in some video players (use MPV)
.IP \(bu 3
H.265/HEVC not supported in browsers/Discord (use H264 for sharing)
.IP \(bu 3
Some distros disable hardware codecs (use Flatpak version)
.IP \(bu 3
Use CBR mode (
.B \-bm cbr
) for replay buffer to control RAM usage
.SH PERFORMANCE TIPS
.IP \(bu 3
Save to SSD (HDD may be too slow)
.IP \(bu 3
Close other screen recorders (including idle OBS)
.SH KNOWN ISSUES
.IP \(bu 3
NVIDIA: CUDA breaks after suspend (install gsr-nvidia.conf fix)
.IP \(bu 3
AMD: Possible black bars colors with HEVC/AV1 (use H264 or FFmpeg >=8)
.SH SEE ALSO
.UR https://git.dec05eba.com/gpu-screen-recorder
Project homepage
.UE
.br
.UR https://git.dec05eba.com/gpu-screen-recorder-gtk
GTK GUI version (will be removed in the future)
.UE
.br
.UR https://git.dec05eba.com/gpu-screen-recorder-ui
ShadowPlay-style UI
.UE
.br
.BR xdotool (1),
.BR slop (1),
.BR slurp (1),
.SH AUTHORS
Developed by dec05eba and contributors.
.SH COPYRIGHT
Copyright © dec05eba. Licensed under GPL3-only.
.SH BUGS
Report bugs at
.UR mailto:dec05eba@protonmail.com
dec05eba@protonmail.com
.UE .