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.
---
libavcodec/proresenc_anatoliy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/proresenc_anatoliy.c b/libavcodec/proresenc_anatoliy.c
index 414f52d396..6925dfe4bc 100644
--- a/libavcodec/proresenc_anatoliy.c
+++ b/libavcodec/proresenc_anatoliy.c
@@ -747,7 +747,7 @@ static int prores_encode_frame(AVCodecContext *avctx,
AVPacket *pkt,
bytestream_put_be32(&buf, FRAME_ID);
bytestream_put_be16(&buf, header_size);
- bytestream_put_be16(&buf, 0); /* version */
+ bytestream_put_be16(&buf, avctx->pix_fmt != AV_PIX_FMT_YUV422P10 ||
ctx->need_alpha ? 1 : 0); /* version */
bytestream_put_buffer(&buf, ctx->vendor, 4);
bytestream_put_be16(&buf, avctx->width);
bytestream_put_be16(&buf, avctx->height);
--
2.43.0
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