[FFmpeg-devel] [PATCH 1/2] lavc: add CEA-708 codec id.

[Reimar Döffinger]

On 10 March 2014 11:56:46 CET, Nicolas George <george at nsup.org> wrote:
>Signed-off-by: Nicolas George <george at nsup.org>
>---
> libavcodec/avcodec.h    | 1 +
> libavcodec/codec_desc.c | 6 ++++++
> 2 files changed, 7 insertions(+)
>
>
>I am not entirely sure about that, all these industrials standards are
>a
>maze of twisted documents all alike. IIUC, the CEA-708 packets can
>themselves contain either EIA-608 data or something else. The sample
>Anshul
>provided shows examples of the former, I do not know a sample with the
>latter.

Not "or", "and". IIRC they _must_ contain a EIA-608 compatibility stream which will be used for output e.g. to older devices. Newer/more advanced ones will use the alternate data that can do more advanced effects etc.
Also I don't think this is new, I believe wtv CC streams contain both parts as well, the 2-byte packages are the 608 compatibility, the rest the 708 content.