[mythtv-users] PVR-350 only records TV at MPEG-1 ??

[Claude Gélinas agr.]

Le dimanche 16 octobre 2005 à 13:29 -0700, Matt SF a écrit :
> Thanks, Niklas, Steve and Nick for responding.  Nice to actually get some 
> feedback on the mythtv-users list :)
> 
> 
> On Sat, Oct 15, 2005 at 08:13:18PM +0100, Nick wrote:
> > On 15/10/05, Matt SF <spore at psibercom.org> wrote:
> > 
> > No you are not. When trying to improve video capture quality, you
> > first have to make sure you have turned off likely culprits like noise
> > removal and have as clean a feed as possible. I would also suggest
> > employing a test card to see exactly how much resolution the card can
> > handle (you should expect S-Video to be better than composite for
> > example). The 350 can _natively_ record in MPEG2 over a range of
> > resolutions, from 480x480 up to 720x480.
> > 
> > Nick
> 
> 
> ah ok fair enough :)  I just wish these companies would print a spec sheet 
> that's a bit more clear on the details.  lines like these...
> 
> MPEG record specifications:
>     * NTSC format at 29.97fps: Full D1: 720x480, MPEG1: 352x240
>     * PAL format at 25fps: Full D1: 720x576, MPEG1: 352x288
> 
> MPEG hardware player specifications:
> 
>     * NTSC output: Full D1: 720x480, MPEG1: 352x240
>     * PAL output: Full D1: 720x576, MPEG1: 352x288
> 
> ...are misleading with all the previous usage of the term "MPEG2" in the 
> same document.  A quick primer in their specs on "D1" would have been 
> helpful.  e.g.: this entry from DigitalFaq.com...
> 
> D-Values. Various resolutions are often referred to as D-values. Full D1 
> video is 720x480. Cropped D1 is 704x480. Half D1 video is 352x480. Quarter 
> D1 (actually SIF) video is 352x240. Two-Thirds D1 video is 480x480. DVB 
> and DVD-VR use unusual MPEG resolutions, sometimes called Three-Fourths D1 
> at 544x480.
> 
> re: quality issues, I found that tweaking the brightness, color, and 
> contrast via ivtvctl did help improve the look of the 350's tv-out quite a 
> bit.  A quick run through some MySQL commands and I had my channel 
> appearance preferences installed across the entire range.  I did my best 
> to match them up visually to my Avia-tuned Sony, just eyeballing it and 
> switching back endlessly between TV and Video1  :)
> 

what are the setting you did in ivtvctl ?
-- 
-----
Claude Gélinas agr., dta
Phyto Ressources inc.
==============================================================================
Varennes, Québec, Canada           Tél.: (450) 652 9764,   Fax.:(450) 652 6182
     Des questions sur les insectes et maladies des plantes ornementales ?
                 Want to know more about ornamental plant pest ?
                            http://www.phyto.qc.ca