[FFmpeg-devel] [PATCH] libavformat/movenc : Change MOV_TIMESCALE from 1000 to 600

Mark Burton mwjburton at gmail.com
Sun Mar 18 09:52:04 EET 2018

On 14 Mar 2018, at 23:20, Michael Niedermayer <michael at niedermayer.cc> wrote:
> for other cases 600 is less accurate
> for example input that uses timestamps in ms precission
> like flv
> but also 30000/1001 will be less precisse

In the case of a Quicktime encoder, a 30000/1001 frame rate encode would still have a Movie Header timescale of 600, but a video track timescale of 2997. Since ffmpeg allows us to specify the video_track_timescale, this output could still be achieved.

As for flv and formats that use ms precision, I’ll freely admit thats not something I work with so am not in a position to comment. However, would these formats not also have the benefit of the current flag to set video_track_timescale?


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