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

Nicolas George nicolas.george at normalesup.org
Sun Dec 30 01:04:50 CET 2012

(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

At some point I intend to add more subtle tests / controls.

> +<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.

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


  Nicolas George
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