[FFmpeg-devel] [PATCH] Add A53 Closed Captions to MPEG header if they are available.

John P Poet jppoet at gmail.com
Wed Jul 5 23:07:43 EEST 2017

On Fri, Jun 9, 2017 at 11:41 AM Devin Heitmueller <
dheitmueller at kernellabs.com> wrote:

> Hello Marton,
> On Tue, Jun 6, 2017 at 5:45 PM, Marton Balint <cus at passwd.hu> wrote:
> > As far as I remember multiple side data of the same type is not
> something we
> > wanted to support. Why do you need it? Can't a single
> > side data packet contain many CC entries?
> Could you please expand on where this was discussed?  Is there any
> design documentation for side data infrastructure that's been
> introduced into ffmpeg?  Is there some list of other known design
> constraints/limitations?
> While I agree it would be great to simply say that you should never
> have multiple side data items of the same type, I'm not sure how
> realistic that is.  It would be helpful if I could better understand
> the rationale in that thinking.
> I'm starting a rather large project which will likely stretch the
> design for side data in order to support a variety of other ancillary
> data protocols (e.g. SCTE-104, SMPTE 2038, etc), and it would be great
> to better understand where the constraints are (so I can either plan
> to address those issues, or if too significant then choose a different
> multimedia framework to work with before making a significant
> investment building out a bunch of features in ffmpeg).
> Thanks,
> Devin

Is there anything I need to be doing, to get this committed?



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