[FFmpeg-user] Transport Stream (.ts) with ac3 audio

Andy Furniss adf.lists at gmail.com
Thu Feb 6 17:26:46 CET 2014

Carl Eugen Hoyos wrote:
> Andy Furniss <adf.lists <at> gmail.com> writes:
>>> That said, there is a ticket (unreachable atm) which describes the
>>> same problem, since no developer can repropuce this and afaik WMP
>>> plays the files that FFmpeg writes, I don't think this has any
>>> priority;-(
>> Obviously I haven't seen the trac
> http://thread.gmane.org/gmane.comp.video.ffmpeg.trac/11821

Thanks, so m2ts as well.

>> but it seems to me that ffmpeg is making an ATSC
>> compliant stream when muxing AC3, so whether it's
> Afaik, this is correct.
>> reproducable by developers or not it is known not
>> to be a DVB compliant stream.
> I was just trying to explain that problems that are not
> easily reproducible (and, worse, not reproducible with
> software alone) are less likely to be fixed than issues
> that are easily (and with all relevant players)
> reproducible.

Ahh OK, I can see testing any changes being tricky.

>> I am referring to stream type 129 vs 6, (and any other
>> differences in the spec/stream which I haven't looked
>> into).
>> The spec being A52 Annex A (p114)
>> http://www.atsc.org/cms/standards/A52-2012(12-17).pdf
> Implementation for "System B" (page 121) is missing
> for the muxer iiuc.
> Patch definitely welcome!


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