<br><br><div><span class="gmail_quote">On 9/11/07, <b class="gmail_sendername">Jay R. Ashworth</b> <<a href="mailto:jra@baylink.com">jra@baylink.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Mon, Sep 10, 2007 at 09:24:25PM -0400, Chris Ribe wrote:<br>> Unless there is a way to compensate for the image distortion before<br>> it gets to the monitor, that is. The problem with the monitor is<br>> that the red gun traces a line that is something like 7*sin(x/1920)
<br>> lines above/below where it should be where x is the number of<br>> pixels from the left edge of the screen.<br><br>> In theory, if could just apply a filter to the red channel in X<br>> or the video driver, I could coax a reasonable picture out of my
<br>> set without needing to fix the convergence. I'm intrigued by this<br>> possibility mostly because it is a much cooler solution than buying<br>> a remote. (If i just wanted an easy solution, I wouldn't be using
<br>> mythtv).<br><br>> So, where should I start looking for ideas on how to accomplish<br>> this? I have one frontend with an nvidia 5200 graphics card, a<br>> macbook, and a frontend that needs a new video card (I had been
<br>> hoping to use the integrated 945G video, but it is VGA out and my<br>> monitor only has a DVI input), so I am pretty flexible when it<br>> comes to video drivers.<br><br>Your math says it's a one-channel vertical linearity problem.
<br><br>But, as great a guy as I think you are, Chris: you're nuts. :-)<br><br>Buy the remote.</blockquote><div><br>I wish I could, but I'm wicked poor. C'est la vie. <br><br>I've got another lead though: I've found a JP1 configuration file for emulating the missing remote, and I have an IR blaster. Now I just need to figure out how to translate JP1 to lirc.
<br><br>Unfortunately, google hasn't ever heard of anyone doing this, either....<br> </div><br></div>For the record, the closest I got to accomplishing my color shifting goal was the mplayer "-vf geq=" option.
<br><br>"mplayer -vf geq=p(X\,Y-7*sin(4*X/W)) video.mpg"<br><br>correctly shifts the red channel, but unfortunately takes the other channels with it, too. The result is wavy video at about 1fps. Oh well. <br>
<br clear="all"><br>-- <br>TV/IT Engineer<br>WCJB-TV Gainesville, FL<br>(352) 377 2020 x248<br><a href="mailto:cribe@wcjb.com">cribe@wcjb.com</a>