[mythtv-users] Sound a second behind video

[Michael T. Dean]

On 03/12/2008 08:12 AM, Mark Hutchinson wrote:
> On 12-Mar-08, at 12:16 AM, Michael T. Dean wrote:
>> On 03/11/2008 11:05 AM, Mark Hutchinson wrote:
>>     
>>> Running latest 21 ATRPMS on F8.
>>> Capture via firewire.
>>> Nvidia 7300 on 1280x1024 monitor. ( latest livna nvidia drivers 169 )
>>> Audigy B PCU sound card
>>> I have tried all playback profiles ( and a few custom ones ) but am
>>> seeing all audio about a second(ish) behind video.
>>> Aggressive audio enabled.
>>>       
>> Have you tried plugging in directly to your TV's tuner?  I would guess
>> it's the re-broadcaster (cable/satellite company) or their STB.
> Yes, it is perfect directly into the TV.
> It also works perfectly watching live TV if it is HD.
> If the live TV is SD, sound is delayed 1 second(ish)
>
> SD is totally unwatchable.

BTW, you've probably mentioned this, but I don't remember and don't feel 
like digging through all the posts, but did you try playing back the 
recording with other media players (i.e. mplayer, vlc, xine, and--if 
possible--some Windows based media players) to determine whether the 
file is corrupt or if it's just a problem with Myth's playback of the file.

If the problem is in Myth's playback, playing it with ffplay (which 
comes with ffmpeg) would be a good test of whether it's a Myth problem 
or an upstream (ffmpeg) problem.  Ideally, you would play it back with 
the ffplay from the ffmpeg SVN revision MythTV 0.21 is currently using 
(I'm pretty sure that's ffmpeg revision 11051).

Mike