[mythtv-users] Re: Need advice with 'Pixelization"

[Ian Trider]

AFAIK, the MythTV defaults for bitrate are way too low.  You need (if
recording at 480x480) roughly 5000kbit/s for a good image.

Also, you might be seeing interlacing artefacts if you are playing
back on a computer monitor/standard video card graphics out and aren't
deinterlacing -- make sure "Deinterlace playback" is enabled in the
settings.


On 4/13/05, Larry K <lunchtimelarry at gmail.com> wrote:
> Let me add that I am not doing HD, and I am taking all the mythtv defaults
> for bitrates, etc.
> 
> 
> On 4/13/05, Larry K < lunchtimelarry at gmail.com> wrote:
> > I'm somewhat perplexed, so I figured I'd post here and see if anyone has
> solved this issue already.  A search of the database does not produce
> anything that looks like what I am seeing.
> > 
> > In brief, I have the following system:
> > 
> > Athlon 2500
> > 256MB RAM
> > 160GB DMA HD
> > PVR-250
> > 
> > I have only had the system working for about a week, but already I notice
> that when I watch live TV, or play back a recording, I notice areas of what
> I call "pixelization" where there is sudden or significant movement in the
> image.  The image does not stutter or act jerky, to the extent that the
> entire image does not seem affected by this issue.  The problem appears in
> isolated areas, and then as the motion in that ares of the image subsides,
> the pixelization subsides as well.  If I had to guess, it's almost as if the
> PVR could not encode the movement sufficiently to make it appear smooth
> during playback.  
> > 
> > Does anyone have any thoughts as to what might cause this?
> > 
> > Thanks,
> > Larry
> > 
> > 
> 
>  
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> 


-- 
Ian Trider
iantri at gmail.com