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_kostya.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/proresenc_kostya.c b/libavcodec/proresenc_kostya.c index 05e90bb236..7e660a3708 100644 --- a/libavcodec/proresenc_kostya.c +++ b/libavcodec/proresenc_kostya.c @@ -995,7 +995,7 @@ 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); -- 2.43.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".