[mythtv-users] Changing channels gets no sound until I switchaudiotracks

[Sammo]

This is what I have just noticed.

Let's look at channel 7 and 9 for now. Channel 7 has one track only, an mp2 
track. Channel 9 has two tracks, an mp2 track and an AC3 track. I know this 
is correct because I've played with real set top boxes and other DVB 
software.

The problem is that in live tv, it is still possible to select from two 
audio tracks in channel 7, even though it really only has one track. 
Pressing +/- keys shows "Audio track 1" and "Audio track 2". One of the 
tracks is real (the mp2 track), and the other track does not exist. When 
changing from channel 9 (which has two tracks) to channel 7, mythtv tries to 
use the same audio track, even if the channel doesn't have that track.. 
hence sometimes there is no audio when changing channels

Okay, in recorded shows, channel 7 only shows the one audio track (which is 
correct). Pressing +/- keys only shows "Audio track 1"

0.18.1 and latest CVS has this problem. It must have something to do with 
how mythtv handles the audio tracks when changing channels in live tv mode. 
Repeat, it does not affect recorded shows.

0.17 was fine, as far as I remember. So it must have something to do with 
changes that have occured between then and now. Hopefully one of the more 
knowledgable developers will find this information useful.

Hope it helps .... now to catch up on some shows ....seeyas


On 7/18/05, Sammo <sammo2828 at gmail.com> wrote:
> 
> I am in Sydney, Australia. Channels 9 and 10 have both AC3 and mp2 for SD. 
> I use AC3 whenever possible because my external amplifier has a AC3 decoder.
> 
> I get the same problem as you when changing from a channel using AC3 to a 
> channel using mp2. For example, changing from 9 to 7.
> 
> Changing recordings to use TS instead of PS makes no difference for me in 
> live tv.
> 
> I have had no problems with PS recordings either.
> 
> On 7/10/05, Matthew Carle <matthew_carle at hotmail.com > wrote:
> 
> > > -----Original Message-----
> > > From: mythtv-users-bounces at mythtv.org
> > > [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of ffrr
> > > Sent: Saturday, 9 July 2005 8:37 PM
> > > To: Discussion about mythtv 
> > > Subject: Re: [mythtv-users] Changing channels gets no sound
> > > until I switchaudiotracks
> > >
> > > Matthew Carle wrote:
> > >
> > > >I had a problem with sound stopping after changing from a
> > > stream with
> > > >AC3 to one that was not. I came across the solution when
> > > trying to fix
> > > >something else. The fix I used was to change the mode from PS to TS.
> > > >You can get details on how to do that here: 
> > > >
> > > > http://www.gossamer-threads.com/lists/mythtv/users/135242
> > > >
> > > >All recordings should have all the audio tracks. If your 
> > > problem is the
> > > >same as mine, the sound will always work when you watch a recording
> > > >anyway (since the channel doesn't change).
> > > >
> > > >Hope that helps,
> > > >Matthew. 
> > > >
> > > >
> > > >
> > >
> > > I have no idea if the streams coming from local digital TV
> > > stations here
> > > (Australia) have AC3 or not, but I can certainly try changing to TS.
> > > 
> > > Thanks for the pointer.
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >
> > 
> > 
> > I am in Canberra, Australia. I think ABC SD and all the HD channels are 
> > AC3
> > here.
> > 
> > Matthew.
> > 
> > 
> > _______________________________________________ 
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users 
> > 
> > 
> > 
>
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