[mythtv-users] Two odd issues with NBC DTV recordings

[David Engel]

On Thu, Oct 02, 2008 at 11:16:33AM -0700, Don Lewis wrote:
> On  2 Oct, David Engel wrote:
> > While I'm at it, is anyone experiencing audio underruns with OTA Fox
> > recordings?  That's another problem I'm still working on.
> 
> I'm recording off cable and have been having audio underruns on the Fox
> and PBS HD channels, which are 720p, but not NBC and CW, which are
> 1080i.  What's wierd is that this problem only started after I upgraded
> from Fedora 7 to Fedora 9 and it affects recordings made before the
> upgrade.
> 
> See <http://svn.mythtv.org/trac/ticket/5749> and the thread "mythtv
> audio stuttering on 720p material after upgrade to Fedora 9" on this
> list for more details and a patch that fixes the problem for me.

I was aware of a stuttering thread dealing with 720p but I wasn't
following it very closely since I didn't think it was the same
problem.  The symptoms of your problem, however, sound jsut like mine
although I'm using analog output instead of SPDIF.

FWIW, I am actually recording off of cable too.  Time Warner recently
made a change in my area where (AFAICT) the MPEG data sent over cable
is identiical to that sent OTA.  That's when the NBC problem started
showing up for me.  The audio underrun problem with Fox started about
the same time, too.  

I had audio underrun problems long ago with Fox when testing with an
antenna and assumed this underrun problem was the same old underrun
problem.  Until a few weeks ago, I hadn't recorded anything off of Fox
all summer so it's entirely possible the problem is with newer
versions of Myth.  Unfortunately, I don't have any old Fox recordings
to test with.

I will try the patch tonight.  Thanks for pointing it out.

David
-- 
David Engel
david at istwok.net