Well, because:
Quote:
Originally Posted by WorBry
...for further processing in RGB32...
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And by that I mean encoding to intermediate RGB formats suitable/desirable for further processing in other linux applications (KDenLive, Cinelerra, Natron etc).
Basically, I want to examine the pros and cons of 'direct' transcoding of my YV12 sources to various RGB formats (UTVideo, Raw, PNG Image Sequences etc) with FFMPEG versus pre-conversion to RGB using Vapoursynth and piping out to FFMPEG for encoding. And then of course converting back to YV12 for encoding out to deliverable formats.
That's just one of the scenarios. The peculiarities of the "Progressive Segmented Frame" (PsF) AVCHD.mts format that some of my sources are recorded in and the way they are handled weigh into that evaluation. And another thing I want to look at is compression of full scale 0-255 sources to 16-235 before conversion to RGB. So there are good reasons.
I just would like to know if the above method that I use for converting YV12 to RGB with AVISynth has an equivalent in VapourSynth.