[mythtv-users] mplayer digital vs. mythtv digital

jedi jedi at mishnet.org
Sat Jul 24 20:11:37 UTC 2010


On Sat, Jul 24, 2010 at 09:09:56AM -0600, Brian Wood wrote:
> On Saturday, July 24, 2010 08:59:35 am Michael R. Hines wrote:
> > Hi,
> > 
> > I'm trying to determine why mythtv's digital live TV capture has
> > different output than mplayer's live TV capture.
> > 
> > So, I did the following:
> > 
> > bash$ scan /usr/share/dvb/atsc/us-NTSC-center-frequencies-8VSB | tee
> > .mplayer/channels.conf # found several channels, great
> > bash$ mplayer dvb://NJN-1    # this is my local PBS station
> > 
> > The output of mplayer is fantastic. Nice signal. Smooth audio/video
> > playback.
> > 
> > But when I play it back in mythtv, it's choppy with lots of beeping
> > noises in the audio. The output on my external TV tuner is also very
> > good, but for some reason, myth just isn't playing it back as "nicely"
> > as mplayer.
> > 
> > Any reason for this? How could I track this problem down?
> 
> Remember that Myth is doing a lot more than just playing the file, thus comparing it to mplayer is not comparing apples and 
> apples. Among other things, Myth is checking the database for commercial flags, which means the overhead for MySQL et al.

    Which is not a lot really given everything else going on. This isn't a very
good thing to try and throw out as an excuse.

[deletia]


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