[FFmpeg-devel] [RFC] Sending H.264 stream to multiple containers

[Reimar Döffinger]

On Tue, Jul 16, 2013 at 03:27:00PM +0200, Nicolas George wrote:
> You say that the lavf MOV muxer transforms into MP4-compliant structure.
> Logically, the MOV demuxer should do the reverse transformation, and nobody
> should worry about except people implementing MOV tools and people examining
> a MOV file in a binary editor. Am I missing something?

Yes, decoders (and not just FFmpeg's) generally support both formats.
Also, the format in MOV is actually easier to decode.
So doing such a conversion in the demuxer would be a waste of CPU
cycles for the "normal" use case.

> 1. NAL unit stream     with    global headers;
> 2. NAL unit stream     without global headers;
> 3. Annex B byte stream with    global headers;
> 4. Annex B byte stream without global headers.

Only 1 and 4 are really used to my knowledge, but I
might miss something.