Am So., 24. Jan. 2021 um 23:34 Uhr schrieb Baltazár Radics <baltazar.rad...@gmail.com>: > > 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".
