[mythtv] Suggestion for improving SLOW channel changing in LiveTV.....

J. Donavan Stanley jdonavan at jdonavan.net
Thu Sep 8 17:54:49 UTC 2005

Cory Papenfuss wrote:

>>>     I also didn't use LiveTV because the record/playback quality on 
>>> a PVR-250 was noticably worse than watching LiveTV on the TV.  Not 
>>> exactly sure why (I've been trying to figure it out for close to 2 
>>> years), but it is.  For the convenience of time-shifting, it's a 
>>> sacrifice I'm willing to make.
>> Probably because you had  different bitrates / capture resolutions 
>> between the "default" and "live tv" profiles.
>     Likely possibility for someone new to mythtv, but I was a bit more 
> thorough than that.  I even went so far as to generate 
> ultra-high-frequency test patterns (1800x480 resolution using 
> vector-based B&W test patterns out the VGA port).  Bottom line is that 
> the Philips chip on the pvr-250 does not capture as high of resolution 
> of the relatively crappy rear projection CRT.  It's not the MPEG 
> compression either (I got the RAW YUV data as well).  It's possible 
> that the ivtv drivers tweak a few more things now than then (0.1.9), 
> but from my current system I'd say no.

I misread what you'd written.  I thought you had a problem between live 
tv and recordings not myth and non-myth live tv.

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