4 ms·

I think part of the parent’s complaint is that, although 23976/1000 fps is much more accurate than 24 fps, it’s still very slightly slower than the correct valu

I think part of the parent’s complaint is that, although 23976/1000 fps is much more accurate than 24 fps, it’s still very slightly slower than the correct value 24000/1001 fps, by about 2.1 frames per day.

Const-me 4y ago
Mpeg-4 can do that just fine. Here’s what MediaInfo tool shows about the video stream of some *.mp4 file on my computer. The content was first released in 1997, before modern digital stuff. Frame rate mode: Constant Frame rate: 23.976 (24000/1001) FPS Specifically, the timescale value in "mdhd" box (overall information about the media, defined in section 8.4.2 of the ISO/IEC 14496-12 spec) is 24000, and "stts" box (time-to-sample, defined in section 8.6.1.2 of that spec) says all video frames have the same sampleDelta = 1001.