[Mplayer-dvb] ac3 sound in vdr file not recognized by mplayer and mencoder ?

[mocm at convergence.de]

Dieter Bloms writes:
 > [1  <text/plain; us-ascii (7bit)>]
 > Hi,
 > 
 > I've recorded some videos from pro7 with ac3 sound.
 > If I play them with vdr, I get the ac3 sound (via play-ac3).
 > 
 > But mplayer doesn't recognize the the ac3 sound.
 > I tried several aids (0, 1, 128, 129) but it seems, that mplayer does
 > only
 > recognize the aid 0 which is the normal mpeg sound.
 > 
 > I have uploaded the file to:
 > 
 > ftp://mplayerhq.hu/MPlayer/incoming/dbloms_pro7.vdr
 > 
 > The distribution is SuSE Linux 7.3, the sound driver comes from creative
 > (emu10k1-20020102.tar.gz) and the kernel is 2.4.15.  I use the gcc
 > 2.95.3 compiler.
 > 
 > Has anybody tried to watch vdr files with ac3 sound ?
 > 
 > 
 > -- 

My guess would be that the audio PES in the vdr files don't have an
AC3 header. The A52 (AC3 via ATSC and as it seems also DVB) format doesn't 
require the header and if vdr doesn't add the header, mplayer probably
won't recognize it as AC3.

Marcus