[FFmpeg-devel] [RFC PATCH] avformat/dashdec: Improve implementation

[Derek Buitenhuis]

On 22/03/2021 22:25, zsugabubus wrote:
> Compared to previous implementation, this rework tries to:
> 
> - Improve code quality,
> - Provide better error handling (also: reduce numerous (potential)
>   memory leaks),
> - Broader coverage of the standard:
>   * multiple periods,
>   * multiple base URLs (fallback on CDN failure),
>   * handle ContentProtection/Role/etc... nodes,
>   * manifest chaining,
>   * drop ridiculous limits of @id's.
> - Fast startup, thanks to reading/probing streams only when needed.
> - Open multiple connections (HLS can open one more connection in
>   advance; DASH can do up to UINT_MAX, configurable via option);
>   similarly to HLS, currently it only opens them so only sequential
>   reading is possible, however this behavior can be changed in the
>   future,
> - Ability to seek live streams.
> - Bonus: Tests show that there are some kind of live streams that old
>   implementation was unable to cope with, now it is possible to play
>   them.

These should be separate, testable, atomic commits. One massive patch that
does 40 things is not reviewable or good for git history.

- Derek