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| Choppy video http://forum.linhes.org/viewtopic.php?f=2&t=4411 |
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| Author: | bburd [ Tue May 03, 2005 8:20 pm ] |
| Post subject: | Choppy video |
I'm getting reasonable audio but extremely choppy video. I see this with both live TV and with recordings that I make. I've tried moving to low quality (and changing the Low Quality settings a bit) but this doesn't seem to help. The problem may be my hardware. I have an AverTV Studio card, a 1 GHz processor, and 384Meg of RAM. This is sufficient for recording and playing TV in Windows, but are the requirements in MythTV the same? If so, what can I tweak in order to get rid of the choppiness? Thanks. |
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| Author: | cesman [ Tue May 03, 2005 10:29 pm ] |
| Post subject: | |
MythTV doesn't play back "live", it has to encode and decode which eats CPU. If you where to use xawtv for instance, you fine that live TV playback is fine. I'd suggest reading the MythTV docs. You can also try reducing resolution, etc. |
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| Author: | Xsecrets [ Tue May 03, 2005 10:58 pm ] |
| Post subject: | |
BIG question would be what vid card you are using and what drivers. if for any reason you are using the vesa drivers then no that proc is not even close to powerfull enough. luckily most vid cards have accelerated drivers which you can load if for some reason it was not autodetected properly. |
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| Author: | bburd [ Wed May 04, 2005 5:23 am ] |
| Post subject: | |
Thanks for your replies. I have some follow-up questions... I tried running xawtv and it looked horrible - monochrome with lots of interference of some kind. Is this a clue? When you say "reduce the resolution," I tried changing the settings on the "low quality" video profile, but had no luck at all. Are there other resolution settings I should change? (I'm not that concerned about live TV. My main purpose is to record and then playback.) Finally, my card is an (admitted cheap) AverTV Studio card. The install seemed to sense its presence, but maybe didn't install accelerated drivers (which I know nothing about). Where do I find such accelerated drivers? (Sorry for the newbie nature of the questions.) P.S. Settings include V4L and i686. Is that okay? |
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| Author: | Xsecrets [ Wed May 04, 2005 7:40 am ] |
| Post subject: | |
not the tvcapture card the video card. most likely will be nvidia ati onboard intel onboard sis whatever the device you have the video output comming from to your tv or monitor. |
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| Author: | bburd [ Wed May 04, 2005 5:45 pm ] |
| Post subject: | |
I have four video cards that I can try (none of them very high quality)... - a Rage XL - a Rage Pro - a Diamond Multimedia Viper - a Radeon 7000 For which card am I most likely to find a useful driver (and where)? Thanks. |
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| Author: | Xsecrets [ Wed May 04, 2005 10:25 pm ] |
| Post subject: | |
all of those should have drivers with xv support. Granted none of them are great cards, but any should work. Drivers for all those cards should be installed by default, though they may not be used by default. |
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| Author: | bburd [ Thu May 05, 2005 9:15 am ] |
| Post subject: | |
The Radeon seems to be the newest among them. How do I check to make sure that the proper driver is installed, and what do I do if it's not? (I searched the Web for Linux Radeon 7000 drivers, but I didn't find any.) |
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| Author: | Xsecrets [ Thu May 05, 2005 9:30 am ] |
| Post subject: | |
the radeon should be supported by the open source drivers. so you would just make sure that the driver is listed as radeon in your XF86Config-4 file and not vesa |
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| Author: | bburd [ Thu May 05, 2005 12:19 pm ] |
| Post subject: | |
That seems to have worked! Thanks. |
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