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avcodec/proresenc_kostya: use a compatible bitstream version

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Quoting SMPTE RDD 36:2015:
  A decoder shall abort if it encounters a bitstream with an unsupported
  bitstream_version value. If 0, the value of the chroma_format syntax
  element shall be 2 (4:2:2 sampling) and the value of the
  alpha_channel_type element shall be 0 (no encoded alpha); if 1, any
  permissible value may be used for those syntax elements.

So if we're not in 4:2:2 or if there is alpha, we are not allowed to use
version 0.
This commit is contained in:
Clément Bœsch 2023-12-11 19:47:14 +01:00
parent 85cb1b9b20
commit aa7ccd0ce9
1 changed files with 1 additions and 1 deletions
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2
libavcodec/proresenc_kostya.c
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@ -994,7 +994,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
// frame header
tmp = buf;
buf += 2; // frame header size will be stored here
bytestream_put_be16 (&buf, 0); // version 1
bytestream_put_be16 (&buf, ctx->chroma_factor != CFACTOR_Y422 || ctx->alpha_bits ? 1 : 0);
bytestream_put_buffer(&buf, ctx->vendor, 4);
bytestream_put_be16 (&buf, avctx->width);
bytestream_put_be16 (&buf, avctx->height);