Quoting Mark Thompson (2024-06-16 17:26:26) > Is there some requirement in H.266 that in a single stream the PPS precedes > the SPS? > > Currently we effectively require that for a single stream because we use the > SPS to enforce constraints on the PPS in both H.265 and H.266, but I'm not > seeing a hard dependency and it looks like it will currently work on later > stream starts as long as the parameters don't change too much. > > In H.264 there is an explicit dependency because you need chroma_format_idc > to parse scaling lists, but again this will usually work because it's > unlikely to change inline.
IIRC the spec requirement is about PPS activation, not order in the bytestream. Our decoder does impose constraints on the order, and I don't recall it ever causing problems, but it does not follow from the spec. -- Anton Khirnov _______________________________________________ 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".
