[FFmpeg-user] Colorspace, clarifications; was: [Cin] FranceBB's LUT collection

[Erik Dobberkau]

> yuv420p10le(tv,bt2020nc/bt2020/smpte2084)
>              \  \        \      \
>               \  matrix   \      transfer
>                range       primaries
> Is the above _always_ the correct interpretation of the order?
>
> Here: https://ffmpeg.org/ffmpeg-filters.html#colorspace,
> 1) Does "Input video needs to have an even size" really mean an even
> number of rows?
> 2) Is 'colorspace=space=<string>' really 'matrix'?
> 3) What is 'colorspace=format=<string>'?
> 4) The formats, whatever they are, are all yuv, so
> 'colorspace=format=<string>' outputs yuv?
> 5) Are all 'colorspace' outputs always yuv?
>

re 1): Both width and height must be even.
re 2): set the matrix to use for the output. So yes.
re 3): you can only pick yuvXXXpNN formats to set the subsampling and bit
depth (XXX = { 420, 422, 444 }, NN = { [noValue -> 8 bpc], 10, 12 })
re 4): Yes.
re 5): Yes.

>From what I read in trac and Doxygen, I'd recommend you avoid using this
filter if you can...