[FFmpeg-user] Converting a 23.98p source to 29.97i ProRes w/interlaced 3:2 pulldown?
melmatsuoka at gmail.com
Mon Oct 26 20:42:43 CET 2015
> On Oct 26, 2015, at 9:15 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> I believe (strongly) that what you like as output
> framerate is not 29.97 but 30000/1001
I guess I'm looking for the "why", rather than the "what", as far as this syntax is concerned.
In NTSC broadcast land, 29.97 frame rate is *always* defined and referred to as just that: 29.97. No professional video tool that I'm aware of requires the user to define that frame rate with the level of precision that dividing 30000 by 1001 gives you.
And I suppose this begs the question, where do the numbers 30000 and 1001 come from to begin with?
More information about the ffmpeg-user