[FFmpeg-user] How can I force a 360kHz time base?

[Jim DeLaHunt]

On 2021-02-26 17:53, Mark Filipak (ffmpeg) wrote:

> … I'm concerned with the internal time base in the filter pipeline 
> that's used to resolve frame ordering, both video and audio.…

That is the timebase which FFmpeg stores as a rational number, and is an 
attribute of the video stream, and can take various values.

As I read the code, it is stored in struct AVFilterLink, and is referred 
to as `link ->time_base`, and has type `AVRational`.


> …Currently, the ffmpeg internal time base appears to be 1kHz.…

Reading the code, and especially the type AVRational for the time_base 
value in AVFilterLink, points away from this claim. The evidence you 
have presented so far does not prove this claim. The evidence could be 
explained by your specific file input1.mkv having a varying frame rate, 
rounded to 1ms increments.

       —Jim DeLaHunt