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Old 27th January 2020, 22:55   #2  |  Link
sneaker_ger
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Join Date: Dec 2002
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Quote:
Originally Posted by Richard1485 View Post
--fps implies --force-cfr
This is true.

Quote:
Originally Posted by Richard1485 View Post
so I shouldn't need to set that explicitly. What I want to establish is that the above ensures that vfr never kicks in at all -- in other words, that my video has not gone cfr->vfr->cfr internally, which might conceivably cause problems. So far, my encodings have completed without discernible frame-rate issues, but I'd like to be absolutely sure that I've not overlooked/misinterpreted something.
I'm not quite sure what you mean. Note that --fps/--force-fps only change the timings and set the cfr flag in the bitstream. They do not actually duplicate/drop frames (or similar mechanism) to convert VFR to CFR. If your source is "true" VFR then you will run into sync problems. If your source is CFR then using --fps is fine.
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