[mythtv-users] Re: Problem with Mythburn

Michael T. Dean mtdean at thirdcontact.com
Wed May 25 16:30:37 UTC 2005

Jonathan Markevich wrote:

>> indicate that ProjectX can fix the problems, but I have noticed spurious
>> A/V sync errors in my recordings processed with ProjectX (instead of
>> gradual loss of sync resulting in a noticeable difference at the end of
>> the recording, I have 5-10 seconds of sync offset 2-3 times per hour
>> recording).  Don't know how many of the others who have just begun using
>> ProjectX have actually watched their processed videos to see if they
>> have problems too, but I didn't get any responses when I asked before.
> I didn't respond because I have no problems (which is what you asked).

Well, I had asked if anyone had actually watched any of their videos, 
but, anyway...

> Well, I do have a few "skips" but nowhere near 5-10 seconds, more like 
> 1/4 second every two hours MAYBE.

By 5-10 seconds I didn't mean that A/V are 5-10 seconds out of sync, 
only that for 5-10 seconds of playback at seemingly random places inside 
my recordings, sync is offset (usually by a tiny--but 
noticeable--amount).  So, since this happens 2-3 times in a 1-hour 
recording, I'll have 15-30 seconds of video with a noticeable sync 
offset, but the rest is perfect.

> I think we have to trace this problem way back to the IVTV driver.  
> Everything for me was great while I was using some old .1 version, 
> once I went to the "latest and greatest" .2 and up (with kernel 2.6), 
> everything farther down the chain started falling apart (notably 
> Mythburn).  I think that's also why there are so many varied responses 
> in why MythBurn/ProjectX/nuvexport works or doesn't, even with exactly 
> the same utility codebase.

I agree that there's something different with the output using the new 
IvyTV drivers, but I'm just trying to say that the solution which--at 
first--seemed to work doesn't seem to work after all.


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