I don't care of size, but what would be the best way to take either the VC1 file directly or the M2TS container with the VC1 video and convert it lossless to another temporary format for editing in Premiere Pro?įfmpeg can certainly do this for you, among many other options. At -qp 1, the quality will be significantly higher than even Cineform filmscan 3, or Prores 4444XQ. You can check with various methods, such as PSNRĭo you really need "lossless"? x264 -qp 1 will be very nearly lossless and accepted by most NLE's, and treated as proper YUV (or studio level RGB in vegas). Run a few short tests first on the version you are using, because some point release versions of PP botched up lossless decoding.
Premiere is one of the few NLE's that has a native YUV capable timeline and can work in 4:2:0 (it doesn't "force" 4:2:2, or RGB conversion, unless you perform an operation or use a filter that requires it) You can export lossless x264 again using the voukoder plugin, so full in/out is lossless. Other "lossless" codecs get converted to RGB when decoded. It's the only lossless 8bit 4:2:0 codec that is truly lossless in Premiere. I would convert to lossless AVC using x264, with MP4 container (you can use -keyint 1 and -tune fastdecode for "snappier" editing but larger filesizes).
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