On 2/20/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Date: Mon, 20 Feb 2006 08:01:02 +0100 > From: Hans Verkuil <[EMAIL PROTECTED]> > > I am not aware of any color issues, but the volume issue is a known > 'problem'. If I remember correctly the latest MythTV can set the volume > per card (can someone confirm this?). This is the only real solution: > volume levels of a card are hardware dependent. > > As far as I know, the volume level is -not- settable per-card in > Myth. I suggested this as a potential feature because my 350's level > is at least 9dB above those of my 250's, but the suggestion went > nowhere, and since I'm not running the current Subversion release, > I wasn't about to try to make a patch for it. (I may in the future, > once I can upgrade my current stable machines from 0.18.1 to 0.19, > which is the just-released-last-week non-SVN branch but which is > still getting many bugs shaken out of it.) > > What you -might- be thinking of is that I'm currently "solving" this > problem with a trivial shell script that simply bashes the correct > register setting into the 350 every second, without fail, hence > overriding the initialization that Myth does at the start of a > recording and when changing the channel in LiveTV. However, I'm not > 100% sure this isn't introducing some sort of timing race---I can't > actually jump forward or backwards in an mpeg stream more than a dozen > times without causing the card to wedge (leaves video frozen on the > screen that the GUI then writes characters "through" fragments of > video, like broken chromakeying) and I have to reboot to fix the card. > I don't have quite enough experience running with and without this > kluge to know whether the wedgeup happens even when I'm not constantly > bashing the card volume. Is this a common problem? > > My suggestion actually included (extra credit :) being able to set > per-input levels as well (since often RF audio and composite level > aren't very comparable, and might not be adjustable at the end that's > generating the composite level without causing other problems if its > signal is being split [e.g., to also run straight into a TV]), and > even per-channel levels (since some channels run very hot). > > The feature suggestion can (currently!) be found as the first bullet > item under "Hardware Support" at [1], with pointers to elaboration of > the idea in case someone(s) wanted to implement it in stages. > > [1] http://www.mythtv.org/wiki/index.php/Feature_Wishlist > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel >
Thanks guys. At least I now know I'm not the only person with audio level problems. Too bad there isn't a good way yet to account for that. Maybe in the future, 'eh? As for the low color on some video it looks like this always comes from Channel 54 here in San Jose. (Cable channel 10 on Comcast.) I suspect that it's a station issue and will be monitoring more closely for what the programs are that do it. It's not consisten yet. Cheers, Mark _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
