[FFmpeg-user] Decimal times to frame numbers

Gyan Doshi ffmpeg at gyani.pro
Sat Aug 21 12:50:48 EEST 2021

On 2021-08-21 03:05 pm, Nicolas George wrote:
> - By adding -r on your output and by using a format like MP4 that only
>    supports constant frame rate, you are forcing ffmpeg to duplicate or

A nit, but MP4 is inherently VFR-ready - that's what the (mandatory) 
stts box is for.

It is for some opaque reason that the muxer defaults to CFR, possibly to 
do with some limitation or bug in the early days.


More information about the ffmpeg-user mailing list