[mythtv-users] FireWire output as display?
With the talk on the list lately about how to get the highest quality display from MythTV I started wondering about the possibility of using a FireWire in/out box as the display device for MythTV. I would think it would provide rather high quality output, and DV is a rather simple codec, I don't think the average MythTV box would have too much trouble encoding it in real-time. You wouldn't get Xv, but scaling to 720x480 shouldn't be too hard and I'm not certain you'd even need to do color space conversion. Am I missing something obvious? -Matt ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] High Quality SDTV output
I'm getting ready to build a MythTV box and my big issue right now is how to get high quality SDTV output from the machine. I do not consider the s-video output port found on most video cards to be anything close to high quality. I am not aware of a video card that will output a true 480i signal, all of the ones I'm aware of force the image through scalers which destroy the quality. I want to be able to take interlaced video in, keep it interlaced while it's encoded, and then output it as interlaced video. I am also aware of the Hauppauge PVR-350, but this card seems to have a number of compromises with regards to non-MPEG2 output. I do want to use the MythTV box for AVIs, MP3s and console games (SNES, etc.). I am vaguely aware of Cory Papenfuss's VGA to NTSC transcoder but my soldering skills are pretty poor and I can't seem to find the schematics anymore. I've also seen on this list that some newer nVidia cards can do component output but I haven't seen anything that confirms that they can do a 480i signal. Also, these cards seem to have some issues with Xv video acceleration. With that said, I hope some people on this list know of some cards or tricks that I am not aware of, or areas where I am just plain wrong. Right now I am only looking for s-video or component SDTV only. Thank you, -Matt ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] High Quality SDTV output
On Aug 21, 2005, at 1:48 PM, Cory Papenfuss wrote: FWIW, I briefly corresponded with a guy at nvidia who says that the drivers are supposed to disable the scaler when a "dvd-friendly" size is used (e.g. 720x480). I have yet to hear of anyone who can verify that.Is this supposed to work on any nVidia card? I might see if I can find a cheap enough one to give it a shot. Were there any other requirements, or was it just set X to output at [EMAIL PROTECTED]?-Matt___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] High Quality SDTV output
On Aug 21, 2005, at 3:43 PM, Nick wrote:XV support on the PVR350 is coming along well now, and should (andalready is I think) to start to offer very good quality interlaced TVOutput. Native MPEG2 ouput, esp from LiveTV and recordings, haveexcellent quality, easily surpassing my ATI card's output.NickThe MythTV docs (which do seem to be rather out of date with regards to the PVRx50) state that frame buffer based output on the PVR350 puts quite a load on the CPU. Is this still true, and if so is it high enough that I might have trouble running MAME or snes9x?-Matt___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] High Quality SDTV output
On Aug 21, 2005, at 4:35 PM, Michael T. Dean wrote:The MythTV docs specify information regarding the current "stable" release of IvyTV--version 0.1.9. All the information they give is completely correct--framebuffer-based output takes a lot of CPU--but if you choose to use the "unstable" versions of IvyTV--version 0.2.0-rc3(whatever) or 0.3.6(whatever), you may (should) use the Xv support that John added. If you're using Xv support, video on the PVR-350 is basically as processor-intensive as video on a "real" video card using Xv support (but takes more processor than using XvMC--which you should only need for high-def, which the PVR-350 can't do). However, OpenGL is not (and cannot be) supported on the PVR-350 (since it has no 3D acceleration in the hardware).MikeWill the PVR-350 be able to handle snes9x or MAME output without any trouble?-Matt___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
