workaround ffmpeg hybrid_fragmented bug when no packets have been recorded yet

1 files changed, 13 insertions, 0 deletions

diff --git a/include/ffmpeg_utils.h b/include/ffmpeg_utils.h
index 35524c2..6d7481b 100644
--- a/include/ffmpeg_utils.h
+++ b/include/ffmpeg_utils.h
@@ -1,6 +1,19 @@
 #ifndef GSR_FFMPEG_UTILS_H
 #define GSR_FFMPEG_UTILS_H
 
+#include <stdbool.h>
+
+typedef struct AVFormatContext AVFormatContext;
+
 const char* gsr_av_error_to_string(int err);
 
+/* Marks that a packet has been successfully written to |av_format_context|, see gsr_av_format_context_write_trailer */
+void gsr_av_format_context_mark_packet_written(AVFormatContext *av_format_context);
+/*
+    The same as av_write_trailer, except that the trailer is not written when no packet has been written to a muxer
+    that uses the hybrid_fragmented movflags option (see set_format_context_options), because the mov muxer in FFmpeg
+    crashes when it finalizes a hybrid_fragmented file that has no packets. Returns 0 on success, just like av_write_trailer.
+*/
+int gsr_av_format_context_write_trailer(AVFormatContext *av_format_context);
+
 #endif /* GSR_FFMPEG_UTILS_H */