08.02.2023, 16:43
That's true for x264, so anything that uses x264 will only use rc-lookahead if mbtree is used. 
iirc some older x264 version did write the configured rc-lookahead setting into the sei-block (<-this is what MediaInfo shows), even when it was not used. But for quite some time x264 wrote 0 in the sei-info when rc-lookahead wasn't used.
Cu Selur

iirc some older x264 version did write the configured rc-lookahead setting into the sei-block (<-this is what MediaInfo shows), even when it was not used. But for quite some time x264 wrote 0 in the sei-info when rc-lookahead wasn't used.
Cu Selur
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.