Quote:
Originally Posted by nevcairiel
I wonder if that mode is really that beneficial. If it detects dupes, it could just code them as all-skip P or B frames with minimal bitstream overhead. Sure, that single frame is being saved, but in the grand scheme of things for a small scene of a static shot that seems insignficant. Nevermind that repeat flags are likely to trip up decoders and/or muxers, as you basically generate a VFR bitstream.
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All-skip frame is way more expensive than changing a pic_struct value.
The reason for doing such a weird VFR is that the same mechanism used for 3:2 pulldown and 24->60p conversion is used here.