Occasionally when compiling a Blu-ray project I get a warning that there are video underflow errors. Can anyone suggest a way to fix this?
I encode on an iMac 5k 27" (Big Sur) via terminal/ffmpeg. Blu-ray authoring is done using Sony DoStudio.
A typical encode would be 30k/35k to 40k, with a buffer of 30k. Very slow, tune film.
-c:v h264 -preset veryslow -tune film -b:v 30000k -maxrate 40000k -bufsize 30000k -level 4.1 -pix_fmt yuv420p -x264-params bluray-compat=1: open-gop=1:slices=4:keyint=24:colorprim=bt709:transfer=bt709:colormatrix=bt709: pass=1
(then pass=2)
Quote:
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x264 core 164 r3075 66a5bc1
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Here is a sample compile error message:
