[mythtv-users] Re: mpeg2 playback glitches

[Steven J. Finnegan]

I am having a similar problem with my PVR-250/350 system. This is most 
evident when watching a channel with a "crawl", like CNBC. The crawl will 
'jerk' at least once per second (a very irregular thing). I can also see 
this with a camera pan -- it shows up as what I can only describe as a 
'skewed pan'.

Specifically, which version of the firmware are you using? I have Encoder 
FW Version   2.03.207, and Decoder FW Version 2.02.001 (which I presume is 
not being used). The version numbers are in the first few bytes of the file.

Looking at the site you mention, they have encoder version 2.03.207, which 
matches mine, and 2.03.021, who's number would imply an earlier version, 
but has a later date. So I am somewhat confused as to which one I should be 
using.

Also, I presume all you did was to extract the contents of these file(s) to 
your /lib/modules directory, and rebooted? The firmware gets downloaded 
each time the driver loads?

Thanks,
sjf

>From: Curtis Stanford <curtis at stanfordcomputing.com>
>Precedence: list
>Subject: Re: [mythtv-users] mpeg2 playback glitches
>Date: Mon, 21 Jul 2003 17:35:45 -0600
>To: Discussion about mythtv <mythtv-users at snowman.net>
>References: <200307211042.57017.curtis at stanfordcomputing.com>
>         <200307211249.53674.ijr at po.cwru.edu>
>         <200307211630.34708.curtis at stanfordcomputing.com>
>In-Reply-To: <200307211630.34708.curtis at stanfordcomputing.com>
>Reply-To: Discussion about mythtv <mythtv-users at snowman.net>
>Message-ID: <200307211735.45484.curtis at stanfordcomputing.com>
>Content-Type: text/plain;
>   charset="iso-8859-1"
>MIME-Version: 1.0
>Message: 4
>
>Oops, spoke too soon. Still there, although not as often. Do any other 
>PVR-250
>owners see this?
>
>On July 21, 2003 04:30 pm, Curtis Stanford wrote:
> > Cool! I found a site with images of the firmware, downloaded the latest and
> > reloaded. Seems to have taken care of the problem...
> >
> > Thanks Isaac!
> >
> > On July 21, 2003 10:49 am, Isaac Richards wrote:
> > > On Monday 21 July 2003 12:42 pm, Curtis Stanford wrote:
> > > > Hey all, I have to say Mythtv is working pretty well for me right now.
> > > > I am noticing some minor glitches in mpeg2 playback (recorded on the
> > > > backend through a PVR-250). Once in a while (maybe once or twice a
> > > > minute) I get a glitchy frame in the playback. It looks like it's a
> > > > proper frame just offset by a certain amount. This happens in live TV
> > > > mode and watching recordings.
> > > >
> > > > Just wondering if this is a known problem or if it's my hardware or
> > > > setup.
> > >
> > > Sounds similar to a bug in the pvr-250 firmware that was discussed a bit
> > > on the ivtv-devel list last (or before?) month.  Might want to try a
> > > different firmware revision.
> > >
> > > Isaac



***************************************************************
Steven J. Finnegan, President
Controlsoft Corporation
Phone: (760) 747-5632
WebSite: www.controlsoftcorp.com
E-mail: sjf at controlsoftcorp.com

***************************************************************
   
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