[Ffmpeg-devel] [PATCH] DVB AC-3 support in mpegts.c

Måns Rullgård mru
Wed Mar 15 15:38:02 CET 2006

Andy Brown said:
> Quoting M?ns Rullg?rd <mru at inprovide.com>:
>> Andy Brown said:
>>>>> This patch simply adds demuxing support for AC-3 streams in DVB TS
>>>>> files.  In these streams AC-3 is given type 0x06 (private stream)
>>>>> and includes a descriptor with either tag 0x6A or 0x7A.  The code
>>>>> already handles ATSC AC-3 which uses stream type 0x81.  All the new
>>>>> patch does is look for any stream type 0x06 that has a descriptor
>>>>> with the proper tag (i.e. 0x6A or 0x7A) and if found forces it to be
>>>>> recognized as an AC-3 stream.
>>>> Do you have some sample files?
>>> I got the samples I have from someone in Australia who did a capture of
>>> a DVB-T signal.  I'm not sure of the copyright status on that material so
>>> I will have to check.
>> Just a short clip should be allowed as fair use.  I'm not asking for
>> complete
>> programs.
>>> AC-3 on DVB is used primarily in Australia.  Since I don't live
>>> there I have to see what I can do in obtaining a sample that I can
>>> redistribute.
>> How about a commercial?  I've never heard of anyone being sued for pirating
>> commercials.
> I do have two short clips with mostly commericals.  They are MPTS, in
> otherwords with captures of the entire TS stream.

> Therefore they are fairly large.  One is 96MB and the other is 70MB.  I can
> send you those, if you tell me where.  Or I can try to filter it down to a
> single program which would make it smaller.

I'd prefer the complete stream.

> But you'd still need to tell me where to send it.


M?ns Rullg?rd
mru at inprovide.com

More information about the ffmpeg-devel mailing list