Re: [mythtv-users] Resolution Issues, was: program guide font size
Michael, I wish there was a DVI or VGA connector too. It's worse than I thought too, as reading the faq on the Winischhoffer site, I find: Q: High resolution modes such as 1024x768 and 1280x720/1280x1024 look quite bad in 720p/750p and 1080i mode. How come? A: The video bridges' TV encoder is only capable of delivering 800 real pixels of video data. This despite the fact that 720p/750p and 1080i are supposed to be used with higher resolutions than 800 pixels per line. Higher resolutions than 800 will be scaled down. Not only is this a big disadvantage to start with, the downscaler also is a really bad one. Well, it's cheap hardware. At least 1024x576 doesn't look too bad. I mostly use 960x540 in 1080i mode and I can live very well with it. Man, what a croc! I feel like I was mislead by the marketing materials. While I like the look of the box, I'm not as impressed with the hardware in it. Since I don't have any hd content to display anyway, would I be better off with 720 x 480? I guess I'll try that, and the 960x540 that the faq suggests. If I ever get any hd content I guess I'll look into VGA- >Component conversion. Thanks, Peter Darley On Oct 25, 2005, at 1:12 PM, Michael T. Dean wrote: Peter Darley wrote: Indeed, it has the component input that I'm using. Oh. I saw TV out and was thinking NTSC/PAL and thought the limitation was on your card's defined sizes for modes it would scale to NTSC/PAL. Since you're using component output, using a size much larger than 720x480/576 makes sense. But, I was hoping there was a VGA or DVI connection available on the TV so you could totally circumvent the TV out circuitry. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution
Niels Dybdahl wrote: For PAL you should definitely use 576 lines instead of 480 lines. 480 lines will give you a "jumping" playback. When watching Live TV and playing recorded shows I experience something that looks like a really low frame rate (~10fps). Is it possible that what I actually see is this "jumping playback" artifact? As of yet, I have not tried DVD playback. Some of my HW details: PVR-350 (X and TV-out) P4 (Celeron) @ 2.4G 1G RAM -- Torbjørn Heltne ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Resolution
I've been playing around with the different recording profiles in order to see if I can get a better picture in my recordings. It seems as though the three profiles created by the Myth installation are all set to 480 x 480. When I tried setting the High Quality one to PAL (768 x 576) Myth just fails at recording (when I use that particular profile). The rig is an Intel board with a P4 and PVR-350 with FC3 setup to Jarod's guide. I'm doing X over the TV-out but at present am using the hardware decoder rather than the new drivers (as I haven't worked out how to get these running properly with the newer x-driver) Are there recommended settings for the different profiles? The 480 x 480 setting gets me about 2Gig an hour which is manageable. Am willing to experiment with bigger file sizes if the quality is better. Any thoughts? Regards Marty ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Resolution, screen size, and other related 'size' question
I see posts and FAQ's and specs that display different numbers and I'm wondering what one means over the other. For example: I have a Samsung DLP Monitor that has the following "specs": It's a 61" 16x9 TV. It has a resolution of 1280x720 It supports the following formats: 480i, 480p, 720p, 1080i Any generic explaination would be really nice. 2 specific questions I have: In the MythTV recording profiles, to 'get the most' out of my TV, what resolution should I use to record? What resolution should I have in my xorg.conf? Related question: I have both VGA and DVI inputs on the TV. I am wondering if running a vga to vga cable from my videocard to the input will transfer an HD stream, or if I HAVE to get a videocard with a DVI output (not that it's that big of a deal, it'd just be nice to save ~30 bucks ;) ). Thanks!! ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Resolution to stuttering on final 10-15 seconds of playback?
I've only just noticed that my 0.71 is doing this odd stuttering/freezing during the last 10-15 s. of playback (usually don't get that far). Again, it's not that important, but it is a little annoying. Has there been any consensus as to its possible cause? I didn't see anything turn up. -- [EMAIL PROTECTED] ~]# rm -f .signature [EMAIL PROTECTED] ~]# ls -l .signature ls: .signature: No such file or directory [EMAIL PROTECTED] ~]# exit ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
Phill Edwards wrote: Yes, I believe that is the correct resolution for PAL. Where exactly are you setting this resolution - as you state below, X doesn't like resolutions that aren't available on your video card. In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen. It sounds like that is where your cpu usage problem is. I think the front-end will be trying to resize the output when it doesn't need resizing (because it's already at 720x576). But what you've changed doesn't modify the resolution of your X output. What I think you want to do is create an appropriate mode line in your /etc/X11/XF86Config-4 file to output X at 720x576. Thanks Craig. Just so I'm clear, then, are you advising that I leave the settings in the Image Size setup screen as 480 x 480 (which I think is the installation default)? Under Utilities/Setup->Setup->Appearance->Screen Settings, I have zero in all of the settings (GUI width, height, X offset and Y offset) and "Use GUI size for TV playback" is checked. MythTV should then use whatever the resolution of X is (ie. 800x600) and my NVidia TV out then rescales to the 800x600 signal to 720x576 when it outputs as PAL (sort of the reverse of what Steve Cristall is getting). If you set it up this way and change your X settings to output at 720x576, there shouldn't be any rescaling at all from the input signal to the output signal. I did try that, but (like Steve) I didn't get it working 100% and stuck with 800x600 (which works fine). Some people have also said that they get a better picture when receiving a HDTV signal, even though it's being displayed in a standard def set. So changing your X settings to 720x576 might or might not improve your picture quality. I don't think I've been using any of the recording profiles at all (all my profiles are still set at 480x480) and all of my video is still in 720x576 when I watch it on another machine. When I look under the recording profiles, I have "Hardware DVB Encoders" (I don't have a hardware encoder) and "Transcoders" as the only two entries (and I don't transcode anything). I'm using a Twinhan VisionPlusTER (no hardware decoder) and I leave the video in the form it was recorded in until I burn it to DVD and/or delete it. I think the recording profile you're using is most likely the source of your high CPU usage. Craig... ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
Phill Edwards wrote: I'm in Australia so I'm using PAL. I read that the recording dimensions for PAL should be 720 wide x 576 high, but when I do this I notice that it uses a lot more CPU (20% more) and the picture quality improvement is only marginal. Is 720 x 576 right? What do most people set this to on PAL systems. Also, I thought I should also set the X "modes" and "metamodes" settings to 720x576 but it doesn't allow this. Am I trying to do something stupid here? Phil. Is your capture card hardware based encoding or software? In my case I have a PVR350 (h/w based) + DVB card. Both are set to record at 720x576 in Myth Setup. The capture resolution should reflect your source resolution . ie there is no point capturing at 720x576 if you have a 4:3 analogue stream. 640x480 (4:3) is more than enough. If you are capturing an analogue output (but digital broadcast) stream such as Sky, (Foxtel?) then you want a higher resolution. Generally these broadcasts are widescreen, so you want as much vertical resolution as you can get, since most of them are letterboxed anyway. 720x576 only gives 5:4 aspect, whereas most shows are 16:9 or movies even worse My settings are 1 / The DVB card ignores this setting (it doesn't have a choice about the resolution, as Myth just saves the mpg2 stream 2004-12-12 20:01:53 DVB#0 Recorder: Card opened successfully. Videostream: ASPECT: 16:9 Size = 704x576 FRate: 25 fps BRate: 15.00 Mbit/s Audiostream: Layer: 1 BRate: 128 kb/s Freq: 0.0 kHz 2 / More interestingly (for me at least) is that I tried to get an display compatible modeline out of my TNT2 card, to drive a 1280x720 projector. In the end I gave up and feed it 800x600, which gives me the correct aspect ratio. I assume that Myth on playback is scaling the 720x576 to 800x600, and then the projector is scaling it to 1280x720 to display. It looks fine, but not for a purist to consider Hope something helps! Steve ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
Yes, I believe that is the correct resolution for PAL. Where exactly are you setting this resolution - as you state below, X doesn't like resolutions that aren't available on your video card. In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen. It sounds like that is where your cpu usage problem is. I think the front-end will be trying to resize the output when it doesn't need resizing (because it's already at 720x576). But what you've changed doesn't modify the resolution of your X output. What I think you want to do is create an appropriate mode line in your /etc/X11/XF86Config-4 file to output X at 720x576. Thanks Craig. Just so I'm clear, then, are you advising that I leave the settings in the Image Size setup screen as 480 x 480 (which I think is the installation default)? Regards, Phill ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
Phill Edwards wrote: I'm in Australia so I'm using PAL. I read that the recording dimensions for PAL should be 720 wide x 576 high, but when I do this I notice that it uses a lot more CPU (20% more) and the picture quality improvement is only marginal. Is 720 x 576 right? Yes, I believe that is the correct resolution for PAL. Where exactly are you setting this resolution - as you state below, X doesn't like resolutions that aren't available on your video card. In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen. It sounds like that is where your cpu usage problem is. I think the front-end will be trying to resize the output when it doesn't need resizing (because it's already at 720x576). But what you've changed doesn't modify the resolution of your X output. What I think you want to do is create an appropriate mode line in your /etc/X11/XF86Config-4 file to output X at 720x576. I tried doing this myself and found it much easier to just run at 800x600. As Rob said, it's fairly close and it works (with monitors and TV output). I'd definitely try and get the native resolution of a HDTV working, but I don't think it will make much of a difference for a standard definition, direct view TV. Craig... ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
RE: [mythtv-users] Resolution for PAL analgue TV
I use 480x480 for my analogue card. I've found myth/drivers to be unstable at any other resolution - i.e. you get crashes in the backend and eventually you have to reboot. My DVB card records at whatever resolution the signal is transmitted at, so usually 720x576. Thanks Lachlan McIntosh -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phill Edwards Sent: Sunday, 12 December 2004 7:44 PM To: Discussion about mythtv Subject: Re: [mythtv-users] Resolution for PAL analgue TV > >I'm in Australia so I'm using PAL. I read that the recording > >dimensions for > >PAL should be 720 wide x 576 high, but when I do this I notice that > >it uses > >a lot more CPU (20% more) and the picture quality improvement is only > >marginal. Is 720 x 576 right? > > > Yes, I believe that is the correct resolution for PAL. Where exactly > are you setting this resolution - as you state below, X doesn't like > resolutions that aren't available on your video card. In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen. ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
> >I'm in Australia so I'm using PAL. I read that the recording dimensions for > >PAL should be 720 wide x 576 high, but when I do this I notice that it uses > >a lot more CPU (20% more) and the picture quality improvement is only > >marginal. Is 720 x 576 right? > > > Yes, I believe that is the correct resolution for PAL. Where exactly > are you setting this resolution - as you state below, X doesn't like > resolutions that aren't available on your video card. In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen. ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] Resolution for PAL analgue TV
Phill Edwards wrote: I'm in Australia so I'm using PAL. I read that the recording dimensions for PAL should be 720 wide x 576 high, but when I do this I notice that it uses a lot more CPU (20% more) and the picture quality improvement is only marginal. Is 720 x 576 right? Yes, I believe that is the correct resolution for PAL. Where exactly are you setting this resolution - as you state below, X doesn't like resolutions that aren't available on your video card. What do most people set this to on PAL systems. Also, I thought I should also set the X "modes" and "metamodes" settings to 720x576 but it doesn't allow this. Am I trying to do something stupid here? For your X resolution, just use 800x600 - it's close enough and works fine here. ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] Resolution for PAL analgue TV
I asked this the other day but it was mixed up with some other questions and I never got a reply, so I'm just asking this on its own this time. I'm in Australia so I'm using PAL. I read that the recording dimensions for PAL should be 720 wide x 576 high, but when I do this I notice that it uses a lot more CPU (20% more) and the picture quality improvement is only marginal. Is 720 x 576 right? What do most people set this to on PAL systems. Also, I thought I should also set the X "modes" and "metamodes" settings to 720x576 but it doesn't allow this. Am I trying to do something stupid here? Regards, Phill ___ mythtv-users mailing list [EMAIL PROTECTED] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
