Hi Carl, thank you for your reply! No, you are not missing anything, I had many many different tests and all were with poor results, for this discussion, I pulled one call (its choppy and audio out of sync) but I'll call it once with h264_omx and once with libx264:
ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -i /dev/video0 -acodec ac3 -ab 128k -f matroska -s 1280x720 -vcodec libx264 -preset ultrafast -qp 16 /usr/ramDisk/testsize2.mkv ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -i /dev/video0 -acodec ac3 -ab 128k -f matroska -s 1280x720 -vcodec h264_omx -preset ultrafast -qp 16 /usr/ramDisk/testsize2.mkv the results are here: h264_omx output: https://dl.dropbox.com/s/sxy43vkmrw46a8u/h264_omx.mkv libx264 output: https://dl.dropbox.com/s/e0zhkniw74inpza/libx264.mkv Cheers, RS. -----Original Message----- From: ffmpeg-user <[email protected]> On Behalf Of Carl Zwanzig Sent: Monday, May 11, 2020 11:22 PM To: [email protected] Subject: Re: [FFmpeg-user] Newbie needs help on capture video/audio using ffmpeg on RPI On 5/11/2020 5:12 AM, Ram Shaffir wrote: > I tried some different ways to capture this. Still, my quality results > are poor, and no audio or the audio is out of sync and video is > choppy, another issue is that when I try to use the hardware > acceleration codec h264_omx I get very low quality comparing to libx264. Unless I'm missing it, what is the exact command line you're using and its output. Also, how does it behave without using h/w acceleration? z! _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
