[FFmpeg-devel] [Ffmpeg-devel] [PATCH] FAQ entry for videojoining

Måns Rullgård mans
Wed Jun 6 16:21:26 CEST 2007

Michel Bardiaux <mbardiaux at mediaxim.be> writes:

>>> Whatever is used for digital-TV in MPEG4 should also work, no? 
>>> What is it?
>> Nobody uses MPEG4 part 2 for digital TV.  If they did, they'd be using
>> MPEG2 TS though.  And yes, it works fine to cat such files.
> If mpeg4-es (video only), mpeg4-es in mpeg-ps, and mpeg4-es in mpeg2-ts 
> are usable for concatenation, I wonder why Michael did not propose them 
> when reviewing the patch?
>> When MPEG2 isn't good enough, broadcasters generally use H.264.  MPEG4
>> never caught on for primarily two reasons: it's not significantly better
>> than MPEG2 at broadcast quality, and the licensing terms are insane (per
>> minute of content royalty fees and such).
> Sanity check: when one talks of MPEG4 here, one means "MPEG4 Part 2"; 
> while one never talks of "MPEG4 part 10", only of H.264.
> But when one reads all the pages found by Googling for "mpeg4 dtt", ie 
> about the use of MPEG4 in Digital Terrestrial Television in France and 
> UK, all mentions of MPEG4 there means "Part 10" (H.264), not "Part 2" 
> (roughly, DIVX). Correct?

That's it.

> And is H.264 usable for concatenation? In which container(s)?

Sure.  It can be concatenated as ES, PS or TS.

M?ns Rullg?rd
mans at mansr.com

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