[mythtv] 0.18 Choppy audio and video on some uk freeview dvbchannels

[Jason W]

On 2005/04/18 09:40, Taylor Jacob wrote:
> OK Everyone who is finding this problem please do the following:
 >
> 1. Change to TS mode.. I refuse to support PS mode anymore.. It already has
> known issues with getting lost on AC3 streams when the signal glitches..

I've been running PS mode and have had many audio drops on signal 
glitches. Happens on MP2 only channels as well as those with AC3 and MP2.

> 2. Comment out the av_remove_stream() code in
> libs/libmythtv/avformatdecoder.cpp.. This is most likely the source of the
> audio going silent in livetv..

I have just tested this as well as having no changes from CVS.

> 3. Tell me if you continue to see this problem.. So far 1/1 people have had
> success with this fix..

Not enough testing yet to see if audio drops but I am getting a problem 
switching between Ten (1) and ABC (2) when using TS mode. Happens with 
and without the above patch.

> Commenting otu teh av_remove_stream code in avformatdecoder might still result
> in channels coming up silent but you should be able to get audio back by using
> the +/- keys..

These channels are not showing more than one audio stream so I cannot 
test if this brings audio back. Running scan is showing AC3 on Ten though:

TEN Digital              (0x0641) 01: PCR 0x0080 V 0x0200 A 0x028a (eng) 
TT 0x0240 AC3 0x028b

ABC TV Queensland        (0x02c1) 01: PCR 0x0901 V 0x0200 A 0x028a (eng) 
TT 0x0240 AC3 0x0294

I seem to recall this problem existing previously with two channels 
having the same PIDs for audio. I cannot recall the fix (if any). I will 
have search the archives when I get a chance.

Switching to Ten or ABC from any other channel gives audio. Also 
quitting live starting live again works.

Jason