On 3/4/2024 1:06 PM, Anton Khirnov wrote:
> + /**
> + * Decoding only. May be set by the caller before avcodec_open2() to an
> + * av_malloc()'ed array (or via AVOptions). Owned and freed by the
> decoder
> + * afterwards.
> + *
> + * By default, when some side data type is present both in global
> + * user-supplied coded_side_data and inside the coded bitstream, avcodec
> + * will propagate the latter to the decoded frame.
> + *
> + * This array contains a list of AVPacketSideDataType for which this
> + * preference should be switched, i.e. avcodec will prefer global side
> data
> + * over those in stored in the bytestream. It may also contain a single
> -1,
> + * in which case the preference is switched for all side data types.
> + */
> + int *side_data_prefer_global;
My only comment is that it would be nice to include some text about what the
practical
application of this option is, rather than just technical details. Something
like:
This can be useful, when, for example, input contains data in both the
container
and bitstream.
- Derek
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