Re: [FFmpeg-user] audio video sync and drift

2018-05-05 Thread John Smith
> > So is there anything I can do or change, to get this to work? Is there no > > way to record audio and video from different sources, and just use "wall > > time" or "time elapsed since executing ffmpeg" to sync up the audio / > > video? > > You can try to use wallclock time for the network input

Re: [FFmpeg-user] audio video sync and drift

2018-05-02 Thread Carl Eugen Hoyos
2018-05-02 22:48 GMT+02:00, John Smith : > So is there anything I can do or change, to get this to work? Is there no > way to record audio and video from different sources, and just use "wall > time" or "time elapsed since executing ffmpeg" to sync up the audio / > video? You can try to use wallc

Re: [FFmpeg-user] audio video sync and drift

2018-05-02 Thread John Smith
Thanks for your response. So is there anything I can do or change, to get this to work? Is there no way to record audio and video from different sources, and just use "wall time" or "time elapsed since executing ffmpeg" to sync up the audio / video? There may be jitter in /dev/video1... but when

Re: [FFmpeg-user] audio video sync and drift

2018-05-02 Thread Carl Eugen Hoyos
2018-05-02 22:19 GMT+02:00, John Smith : > Now at this point I want to stream video, and record video > from my mixer. ffmpeg reads the video from /dev/video1, > and the audio from tcp://localhost:5. This cannot work as these sources do not have a common timeline: Since the v4l2 device most l

[FFmpeg-user] audio video sync and drift

2018-05-02 Thread John Smith
First, as this is my first email to the list, let me say that ffmpeg is a true work of art! I recently discovered this software for a project of mine, and I am very impressed with what this can all do. My project takes various audio and video sources and starts a "mixer"; some video sources are m