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Clément Bœsch af509f9957 avcodec/proresenc_anatoliy: do not write into chroma reserved bitfields

The layout for the frame flags is as follow:

   chroma_format  u(2)
   reserved       u(2)
   interlace_mode u(2)
   reserved       u(2)

chroma_format has 2 allowed values:
   0: reserved
   1: reserved
   2: 4:2:2
   3: 4:4:4

interlace_mode has 3 allowed values:
   0: progressive
   1: tff
   2: bff
   3: reserved

0x80 is what we expect for "422 not interlaced", and the extra 0x2 from
0x82 is actually writing into the reserved bits.

2024-01-10 23:33:02 +01:00

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 a4c62c6c425e31c83b3f90875a28d57 *tests/data/fate/vsynth_lena-prores.mov
 2844076 tests/data/fate/vsynth_lena-prores.mov
 fd29e3963716a09d232b6f817ecb57 *tests/data/fate/vsynth_lena-prores.out.rawvideo
 stddev:    1.31 PSNR: 45.77 MAXDIFF:   11 bytes:  7603200/  7603200