Michael T. Dean wrote:
>On 01/27/2006 01:07 AM, Robert Johnston wrote: > > >>On 1/26/06, Dylan R. Semler <[EMAIL PROTECTED]> wrote: >> >> >> >>>For analog, the picture quality is pretty bad (noisy) and there are >>>about three or four horizontal lines at the top of the screen that have >>>some random patterns of black and white streaks. The picture quality is >>>much better using tvtime and those lines do not appear. >>> >>> >>> >>As for the noise, make sure that Myth is tuning into the same >>frequency (EXACTLY the same frequency) as TVTime is. It sounds like >>Myth's off by a few Khz. >> >> >> >Being off by a few KHz shouldn't matter. Many of the NTSC cable channel >frequencies are off by 12.5 KHz (and the same goes for IRC, and HRC >varies by 5-15KHz), but the tuner hardware's fine-tuning mechanism >should still be able to find the appropriate center frequency. See >http://www.gossamer-threads.com/lists/mythtv/dev/164614#164614 (which >was totally ignored by the guy complaining in Trac that the frequencies >are off) for an in-depth listing of what frequencies are off and why it >shouldn't matter. > >If you (Dylan) want to try an academically-correct list of frequency >definitions, I'd be happy to create one for you (against SVN--just let >me know which frequency list you're using: ntsc_bcast, ntsc_cable, >ntsc_hrc, ntsc_irc (I'm assuming NTSC based on your e-mail address)), >but you'll have to do all the testing because I don't have any >RF-modulated sources. > > Well it's worth a shot. I'd love to get better picture quality. I'm using ntsc_cable. >Or, to find out if it's worth testing a more precise frequency list, >play with the fine tuning values in Myth for the affected channels. >And, most importantly, make sure you're using the right tuner >definition--just because you get a bad picture doesn't mean you've >chosen the right tuner; often it means you've chosen the wrong one. ;) > > By choosing the right tuner, are you referring to the setting in mythtv-setup -> capture cards? I have the standard V4l capture card selected for analog. _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
