many Non-monotonous DTS error while streaming

[shah1git]

Hello. Please help me with a problem.

I'm running a stream to youtube. Here is the config fragment.

paths:

  dub:
    source: rtsp://user:[email protected]:554
    sourceProtocol: tcp
    runOnReady: ffmpeg -i rtsp://localhost:8554/dub -c copy -f flv rtmp://a.rtmp.youtube.com/live2/key
    runOnReadyRestart: yes

In the output I have a lot of messages like this. Can this be fixed?

[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9497; changing to 9933. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:1; previous: 9952, current: 9532; changing to 9952. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9531; changing to 9933. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:1; previous: 9952, current: 9564; changing to 9952. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9564; changing to 9933. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:1; previous: 9952, current: 9596; changing to 9952. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9597; changing to 9933. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:1; previous: 9952, current: 9628; changing to 9952. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9631; changing to 9933. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:1; previous: 9952, current: 9660; changing to 9952. This may result in incorrect timestamps in the output file.
[flv @ 0x55f22e9e7640] Non-monotonous DTS in output stream 0:0; previous: 9933, current: 9664; changing to 9933. This may result in incorrect timestamps in the output file.

[uzername123]

seems it is need to explicitly set framerate (-r 30 or -r 25 or so ) for input stream

[aler9]

Hello, DTS is copied as is from the camera to YouTube through FFmpeg and RTSP, the server doesn't change it. I think FFmpeg has a flag to regenerate DTS, more infos are here:

https://stackoverflow.com/questions/55914754/how-to-fix-non-monotonous-dts-in-output-stream-01-when-using-ffmpeg

[devesnosy]

-af "aresample=async=1"

fixed it for me