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| 1080i works with XvMC, 720p = slow motion http://forums.linhes.org/viewtopic.php?f=17&t=12549 |
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| Author: | kuhurdler [ Sat Nov 11, 2006 5:40 pm ] |
| Post subject: | 1080i works with XvMC, 720p = slow motion |
I've tried every setting I can think of to get this to work. I could use some help. all recordings at 1080i work with standard XvMC enabled, but 720p recordings seem to be about half? speed. If I turn off XvMC they play almost regularly, but my processor is not quite fast enough. DMA is enabled. If I watch any of the 720p videos on my WinXP box, they play fine. so I know they are recording correctly. R5D1: Mainboard: ECS L7S7A2 Ram: 512MB DDR333 CPU: Duron 1400 at 1733 Tuner(s) 3x Air2PC Rev0.2 Chaintech FX5200 128MB 64-bit DDR AGP using VGA out to my TV (actually RGBHV) at 1080i for all video (no de-interlacing turned on) |
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| Author: | borgednow [ Sun Nov 12, 2006 2:00 am ] |
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The Chaintech FX5200 runs an nvidia chip, I think. You should be able to use the nvidia driver for it. XyMC is supposed to decrease cpu utilitization, according to http://www.mythtv.org/wiki/index.php/XvMC I found another thread on another board with the same video card using mythtv and a similar problem. http://pchdtv.com/forum/viewtopic.php?t ... 4c0313a1c4 |
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| Author: | kuhurdler [ Sun Nov 12, 2006 7:44 am ] |
| Post subject: | |
Yes, it is an NVidia chip. I guess I just assumed it loaded the latest nvidia driver on installation. Is there another version I should be trying? It doesn't look like the other thread you mentioned came upon any solutions, did it? My TV will only accept a 1080i input. |
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| Author: | tjc [ Sun Nov 12, 2006 11:50 am ] |
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Is your output switching display modes based on content resolution, or is it locked at 1080i? That's a fairly low spec box for HDTV even with XvMC acceleration, and if it's having to scale the output it could be pushing it over the edge... |
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| Author: | borgednow [ Sun Nov 12, 2006 3:25 pm ] |
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kuhurdler wrote: Yes, it is an NVidia chip. I guess I just assumed it loaded the latest nvidia driver on installation. Is there another version I should be trying?
It doesn't look like the other thread you mentioned came upon any solutions, did it? My TV will only accept a 1080i input. nvidia has a driver available apart from the linux written one, at least according to that first link I gave. I don't know which one km installs. |
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| Author: | kuhurdler [ Sun Nov 12, 2006 11:26 pm ] |
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borgednow wrote: nvidia has a driver available apart from the linux written one, at least according to that first link I gave. I don't know which one km installs.
Anyone know where I can find out which driver knoppmyth R5D1 uses? |
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| Author: | Liv2Cod [ Mon Nov 13, 2006 12:53 am ] |
| Post subject: | |
A Duron 1400?!? Is this a misprint? I can't believe you could watch anything HD on this box. I even had to push my RAM to 1G to avoid stuttering when my system was comm flagging, and I have a P4 3GHz HT processor. |
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| Author: | kuhurdler [ Mon Nov 13, 2006 9:09 am ] |
| Post subject: | |
Liv2Cod wrote: A Duron 1400?!? Is this a misprint?
I can't believe you could watch anything HD on this box. I even had to push my RAM to 1G to avoid stuttering when my system was comm flagging, and I have a P4 3GHz HT processor. Not a misprint (except note that it's running at 1733MHz), it works great with 1080i source and xvmc enabled. I'm not comm flagging. I'm hesitant to buy a faster processor if it won't fix my problem. I had thought 720p material should be easier on a system than 1080i material. Is 720p source -> 1080i output more difficult on a system than 1080i source -> 1080i output? 720p plays almost OK without XvMC at 1080i. why would it be worse with XvMC turned ON? |
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| Author: | kuhurdler [ Mon Nov 13, 2006 10:55 am ] |
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I have a lead from this thread: http://www.pchdtv.com/forum/viewtopic.p ... 4a9a28ad60 I'll be sure to update if it fixes it. In the meantime, I'm still open to suggestions. -----Edit-------- Nevermind. I could only find it under /proc/sys/dev/hpet/max-user-freq And it didn't make a bit of playback difference. |
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| Author: | kuhurdler [ Wed Nov 15, 2006 9:16 am ] |
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I did a fresh install of R5D1 again last night. I was able to play both 720p and 1080i material perfectly at the default monitor resolution (using XvMC). I'm guessing 1024x768 or 800x600? Once I changed the output to 1080i (instead of the default monitor resolution), 720p videos would no longer play smoothly. If I disable XvMC, I can watch 720p videos again. I still don't understand how enabling XvMC actually degrades my performance. |
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| Author: | kuhurdler [ Wed Dec 13, 2006 8:28 am ] |
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I purchased an NVidia GeForce 6200 to try out in place of the FX5200. It seems to solve the problems playing back 720p on a 1080i display. I'll use the 5200 in a frontend only system that only needs the S-video resolution. Oddities I've found: I had to enable 'deinterlacing' with the 6200 for a decent picutre. If I had it enabled on the 5200, it looked really terrible. video often gets "jerky" on the 6200 after I quickskip past commercials. It does not get any better... I have to 'esc' out and then hit 'enter' to restart. A minor inconvenience since it automatically saves my position when I exit (nice feature). |
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