[FFmpeg-devel] [PATCH 2/4 v8] avformat/mov: add support for tile HEIF still images

[Anton Khirnov]

Quoting James Almer (2024-02-11 19:56:59)
> +/**
> + * The video stream is intended to be merged with another stream before
> + * presentation.
> + * Used for example to signal the stream contains a tile from a HEIF grid.
> + */
> +#define AV_DISPOSITION_TILE                 (1 << 21)

The notion of "this stream needs to be combined with another one for
presentation" seems more general than just tiling video, could just as
well describe a set of audio tracks to be mixed together.

And since we're running out of easily usable disposition bits, we
shouldn't waste them. How about AV_DISPOSITION_SUBSTREAM?

-- 
Anton Khirnov