[FFmpeg-devel] [PATCH] web: Add end-of-the-year news article

Alexander Strasser eclipse7 at gmx.net
Sun Dec 30 17:19:57 CET 2012

Hi Nicolas,

Nicolas George wrote:
> (Sorry, I missed it in the first mail.)
> Le nonidi 9 nivôse, an CCXXI, Alexander Strasser a écrit :
> >   I have a question concerning the concat demuxer: Is it dangerous in the
> > sense that when used incorrectly incompatible/broken files may be generated?
> > Or is it trying hard to make sure the input movies fit together?
> Right now, it will produce broken files. Adding a check so that it will fail
> with a clear error message in the most common cases would be relatively
> easy. Covering all cases would be difficult because it is codec specific:
> you can concatenate H.264 streams with different resolutions, but not
> rawvideo streams, or any other codec where global headers are necessary for
> decoding.
> At some point I intend to add more subtle tests / controls.

  OK, in that case I added a bold warning. Other possibilities would be
to drop the coverage of the concat demuxer. Opinions on this are welcome.

  In case we decide to drop if from this article I would be glad to cover
it in a later one.

> > +<h4>
> > +- JSON <a href="ffmpeg-formats.html#tedcaptions">captions for TED talks</a> decoding support
> > +</h4>
> > +<p>
> > +<a href="http://www.ted.com/">TED</a> provides video downloads for their talks.
> > +But these do not contain the language specific captions that can be enabled
> Some (most?) talks can be downloaded with the captions hard-burnt in the
> video, but not at the highest quality.

  You are right for some there is a subtitles dropdown in the download
dialog. I am not sure on which basis it is available or not. The Talks
I tested previously didn't have it so I came to the wrong conclusion.

> Mostly unrelated: maybe mention the subtitles hard-burning features?

  I added an dedicated entry for the subtitles filter and hopefully
corrected the TED entry. I hope I also addressed the comments by

  PATCHv2 attached. Please review I will commit later if there are
no objections.

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