[mythtv-users] MPEG streams from certain channels don't play properly (#3773)

[Curtis Stanford]

On 6-Feb-08, at 7:24 PM, Yeechang Lee wrote:

> Curtis Stanford <curtis at stanfordcomputing.com> wrote on ticket #3773:
>> For the last few weeks, SVN version has not been playing MPEG
>> streams from my SD movie channel correctly. The video plays too fast
>> and the audio skips and doesn't sync with the video. It seems to
>> play OK until I jump forward or back and then it goes all to hell.
>>
> This sounds like an issue I ran into starting in September 2007 on my
> two DCT6200s
> (<URL:http://www.gossamer-threads.com/lists/mythtv/users/ 
> 301351#301351>)
> after 21 months without the problem. Commonalities are SD channels,
> audio/video speed issues, Bob, HD channels are fine, FireWire. I'm
> pretty sure a firmware upgrade that month is to blame.
>
> A few other symptoms I've noticed about the problem that I'll bet
> Curtis' setup also exhibits:
>
> * SD digital channels are fine. So it's not SD versus HD, per se; it's
>  SD analog.
> * The OSD shimmers during playback of recordings from the affected
>  channels. Turning Bob off fixes this issue (but nothing else, of
>  course).
> * Recordings will inevitably stop, sometimes after a minute, sometimes
>  after several minutes. Once the connection dies, manually changing
>  the channel (either via the remote or '6200ch'), then
>  'firewire_tester -R', is necessary in order to reawaken FireWire
>  connectivity.
>
> Yeechang Lee <ylee at pobox.com> | San Francisco CA US

I don't know if that's the same thing as I'm seeing. My problem  
channels are the 3 or 4 SD movies channels I have. Like you say, the  
HD stuff is fine but the SD is not. I'm not sure if they're digital or  
not. I assumed they were. My theory at the time was that, because they  
play mostly movies, the 3:2 pulldown might be a problem or something.  
Just a guess. Other channels which I think are analog play fine.

My recordings don't stop either. The firewire works fine but just  
produces a file that mythtv can't play very well. The same channel on  
another television hooked directly to the cable box works OK. I've  
tried every combination of deinterlacers, XvMC, etc. with no difference.

Curtis