[FFmpeg-devel] [PATCH 0/5] Properly handle CEA-708 caption data when transcoding

[Andreas Rheinhardt]

Devin Heitmueller:
> This patch series is intended to address long-standing known issues where
> CEA-708 caption data is either duplicated or corrupted (i.e. 50% of the data
> is lost).  We employ an intermediate queue, which is available to filters that
> change the frame rate of the video, which stashes the 608/708 data and
> reconstructs properly formed 708 tuples on the output side (injecting
> appropriate padding as needed).
> 
> The common functions are implemented in libavutil, but I am open to
> suggestions.  While all the users in this patch series are within
> libavfilter, there are use cases where this functionality would
> be useful within libavformat (which is why libavutil was chosen).
> 

If it is not used now outside of lavfi, it should be in lavfi to allow
to change it when it turns out that changes are needed.

- Andreas