Quote:
Originally Posted by apophis906
My experience is that it doesn't enforce either of them. I have mine set to auto and have seen it set main level 4 and the output file average 19.7 Mb/s and know it spikes at some points into the 40's. I even tested a 4K clip with auto levels and a low crf to see if it would go past the default level 5 vbv settings and it got up to over 200 Mb/s and averaged around 150's.
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Peak bitrate can only be measured based on a particular VBV buffer size. I've seen MediaInfo calculate peak bitrates much higher than the stream actually had based on --vbv-maxrate and --vbv-bufsize.