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How does h.264/5 not fit the bill?
by stephenr 10y ago
How does h.264/5 not fit the bill?
- IanCal 10y agoCan you run those losslessly?
- deleted 10y ago[deleted]
- thescriptkiddie 10y agohttps://trac.ffmpeg.org/wiki/Encode/H.264#LosslessH.264 https://trac.ffmpeg.org/wiki/Encode/H.264#LosslessH.264
- niftich 10y agoWhile there's a lossless H.264, it doesn't fit the implied use-case proposed in the thread. Using lossless H.264 to recompress lossy MPEG-2 would be akin to using PNG to recompress a JPEG -- silly and wasteful. Sure, it's an inexact analogy because PNG is not a block-based DCT coder, but all lossless H.264 does is set the quantizer as absurdly high as it needs to go to losslessly encode a particular frame. Staring from a compressed source, this is not a good recipe for achieving a space-saving result.
- beernutz 10y agoI don't think h.264/5 is bit-for-bit retrievable is it? Neuronexmachina might be wanting to be able to get back the 1:1 version maybe?