Re: [FFmpeg-user] v4l2 overlay on mjpeg stream
On Mon, Jan 25, 2021 at 12:59 AM Carl Eugen Hoyos wrote: > For future questions: > Please always post all information here on the mailing list, do not > use external resources > except for input samples. > Sorry, I thought I'd read to use pastesites but that must have been another forum. You cannot synchronize these streams because they have different start > times, > there should be a filter incantation that resets the timestamps of the > second input, > something like "setpts=PTS-STARTPTS" > That didn't help, but it made me read what setpts did, and apparently the problem was that the mjpeg stream didn't have timestamps at all. This command worked in the end: `ffmpeg -i https://192.168.11.139:8080/video -i /dev/video3 -filter_complex '[0:v]setpts=(RTCTIME-RTCSTART)/(TB*100),scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2` Thanks again On Mon, Jan 25, 2021 at 12:59 AM Carl Eugen Hoyos wrote: > Am Mo., 25. Jan. 2021 um 00:42 Uhr schrieb Baltazár Radics > : > > > > output of `ffmpeg -i https://192.168.11.139:8080/video > -thread_queue_size > > 2048 -i /dev/video3 -filter_complex > > > '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam] > > [calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2`: > > http://ix.io/2NeC > > output of `ffmpeg -i /dev/video0 -i /dev/video3 -filter_complex > > > '[0:v]scale=iw*4/3:-1[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' > > -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /de > > v/video2`: http://ix.io/2NeD > > For future questions: > Please always post all information here on the mailing list, do not > use external resources > except for input samples. > And please find out what top-posting means and avoid it here. > > > Input #0, mpjpeg, from 'https://192.168.11.139:8080/video': > > Duration: N/A, bitrate: N/A > > Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, > bt470bg/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 > tbc > > Input #1, video4linux2,v4l2, from '/dev/video3': > > Duration: N/A, start: 36730.385449, bitrate: 1985 kb/s > > Stream #1:0: Video: rawvideo (Y800 / 0x30303859), gray, 128x64, 1985 > kb/s, 30.30 fps, 30.30 tbr, 1000k tbn, 1000k tbc > > You cannot synchronize these streams because they have different start > times, > there should be a filter incantation that resets the timestamps of the > second input, > something like "setpts=PTS-STARTPTS" > > Carl Eugen > ___ > 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". ___ 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".
Re: [FFmpeg-user] v4l2 overlay on mjpeg stream
Am Mo., 25. Jan. 2021 um 00:42 Uhr schrieb Baltazár Radics : > > output of `ffmpeg -i https://192.168.11.139:8080/video -thread_queue_size > 2048 -i /dev/video3 -filter_complex > '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam] > [calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2`: > http://ix.io/2NeC > output of `ffmpeg -i /dev/video0 -i /dev/video3 -filter_complex > '[0:v]scale=iw*4/3:-1[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' > -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /de > v/video2`: http://ix.io/2NeD For future questions: Please always post all information here on the mailing list, do not use external resources except for input samples. And please find out what top-posting means and avoid it here. > Input #0, mpjpeg, from 'https://192.168.11.139:8080/video': > Duration: N/A, bitrate: N/A > Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, > bt470bg/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc > Input #1, video4linux2,v4l2, from '/dev/video3': > Duration: N/A, start: 36730.385449, bitrate: 1985 kb/s > Stream #1:0: Video: rawvideo (Y800 / 0x30303859), gray, 128x64, 1985 > kb/s, 30.30 fps, 30.30 tbr, 1000k tbn, 1000k tbc You cannot synchronize these streams because they have different start times, there should be a filter incantation that resets the timestamps of the second input, something like "setpts=PTS-STARTPTS" Carl Eugen ___ 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".
Re: [FFmpeg-user] v4l2 overlay on mjpeg stream
output of `ffmpeg -i https://192.168.11.139:8080/video -thread_queue_size 2048 -i /dev/video3 -filter_complex '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam] [calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2`: http://ix.io/2NeC output of `ffmpeg -i /dev/video0 -i /dev/video3 -filter_complex '[0:v]scale=iw*4/3:-1[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /de v/video2`: http://ix.io/2NeD In both cases, I pressed `q` after ten seconds or so. I have built ffmpeg version N-100777-g2bcec40cce, but that should be visible in the output. On Mon, Jan 25, 2021 at 12:03 AM Carl Eugen Hoyos wrote: > Am So., 24. Jan. 2021 um 23:34 Uhr schrieb Baltazár Radics > : > > > > I'm trying to overlay a v4l2 input on the mjpeg stream of an android IP > > camera. The first few seconds are alright, but the overlay slowly lags > > behind more and more, and starts dropping frames. > > I also get the following warning: > > > > > > Thread message queue blocking; consider raising the > > > thread_queue_size option > > > > I have tried raising it but it doesn't seem to help. > > The command I'm using (the output is a v4l2loopback device): > > ffmpeg -i https://192.168.11.139:8080/video -i /dev/video3 > -filter_complex > > > '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' > > -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2 > > Please test current FFmpeg git head and provide the command line you tested > together with the complete, uncut console output. > > > Overlaying a v4l2 source on another v4l2 source works perfectly with the > > same filter. > > Feel free to show this one as well. > > Carl Eugen > ___ > 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". ___ 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".
Re: [FFmpeg-user] v4l2 overlay on mjpeg stream
Am So., 24. Jan. 2021 um 23:34 Uhr schrieb Baltazár Radics : > > I'm trying to overlay a v4l2 input on the mjpeg stream of an android IP > camera. The first few seconds are alright, but the overlay slowly lags > behind more and more, and starts dropping frames. > I also get the following warning: > > > > Thread message queue blocking; consider raising the > > thread_queue_size option > > I have tried raising it but it doesn't seem to help. > The command I'm using (the output is a v4l2loopback device): > ffmpeg -i https://192.168.11.139:8080/video -i /dev/video3 -filter_complex > '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' > -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2 Please test current FFmpeg git head and provide the command line you tested together with the complete, uncut console output. > Overlaying a v4l2 source on another v4l2 source works perfectly with the > same filter. Feel free to show this one as well. Carl Eugen ___ 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".
[FFmpeg-user] v4l2 overlay on mjpeg stream
I'm trying to overlay a v4l2 input on the mjpeg stream of an android IP camera. The first few seconds are alright, but the overlay slowly lags behind more and more, and starts dropping frames. I also get the following warning: > > Thread message queue blocking; consider raising the thread_queue_size > option I have tried raising it but it doesn't seem to help. The command I'm using (the output is a v4l2loopback device): ffmpeg -i https://192.168.11.139:8080/video -i /dev/video3 -filter_complex '[0:v]scale=iw*4/3:-1,crop=1280:720[cam];[1:v]scale=4*iw:-1:flags=neighbor[calc];[cam][calc]overlay' -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2 Overlaying a v4l2 source on another v4l2 source works perfectly with the same filter. What could be causing the issue? Thanks ___ 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".
