[forestcull]

Originally Posted by sneaker_ger

To convert VFR to CFR:
a.) use VFR aware converter like VidCoder, HandBrake or ffmpeg
b.) in AviSynth or VapourSynth make a VFR->CFR conversion. For example in AviSynth:

a=ffaudiosource("source.mkv")
v=ffvideosource("source.mkv", fpsnum=24000, fpsden=1001) # example for 24/1.001 fps ~= 23.976 fps target
AudioDub(v, a)

Thanks, I'll give this a shot.

Originally Posted by Motenai Yoda

extract timecodecs from source file
encode as crf (not convert from vfr to crf)
apply timecodecs to new file when muxing into mkv

I thought about trying this but it doesn't sound like a long term solution for batch conversions.