[mythtv] Suggestion for improving SLOW channel changing
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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