Can anyone help me understand why the h264_v4l2m2m codec won't write to a mkv container, but will write to a nut which can then be converted to mkv? Is there a way I can skip this intermediate step and write directly to mkv?
sweetums:/home/neale/tmp % ffmpeg -y -hide_banner -loglevel warning -i ElephantsDream.mp4 -to 00:00:02 -c:v h264_v4l2m2m out.mkv [h264_v4l2m2m @ 0xaaaae376e5d0] Failed to set gop size: Invalid argument Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input Error initializing output stream 0:0 -- [libvorbis @ 0xaaaae379ea70] 39 frames left in the queue on closing sweetums:/home/neale/tmp % ffmpeg -y -hide_banner -loglevel warning -i ElephantsDream.mp4 -to 00:00:02 -c:v h264_v4l2m2m out.nut [h264_v4l2m2m @ 0xaaab14fb8f50] Failed to set gop size: Invalid argument [nut @ 0xaaab14fbcd50] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file. sweetums:/home/neale/tmp % ffmpeg -y -hide_banner -loglevel warning -i out.nut -map 0 -c copy out.mkv [h264 @ 0xaaaaf15047b0] no frame! sweetums:/home/neale/tmp % _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
