[vls-devel] Re: AC-3 in ATSC/DVB transport streams

Christophe Massiot massiot at via.ecp.fr
Fri Apr 4 14:00:20 CEST 2003


On Fri, Apr 04, 2003, Toby Jaffey wrote:

> I'm using VLS 0.4.0 to multicast data from DVDs out to an ethernet
> set-top-box. I find that with MPEG audio tracks, there is no problem.
> However, with AC-3 audio, DVDs seem to contain an extra 4 bytes at the
> start of each PES packet.
> 
> My understanding is that in DVB/ATSC compliant transport streams with
> AC-3 audio, these 4 bytes are not present and that this header is only
> found on DVDs.
> 
> Would it be possible for VLS to strip these out?

They will be stripped out if you use the stream output of VLC instead.

-- 
Christophe Massiot.
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