[mythtv-users] giving up on 0.21

Steve Heistand steve at heistand.org
Sat Apr 26 22:05:36 UTC 2008


make sure that you are actually loading the new nvidia video drivers
vs the stock ones. will show up in the /var/log/X... log file.

that aside a GF5500 just aint going to cut it on HD video.

also does the rpm version of mythtv automatically use the XVMC video
stuff to actually take advantage of the nvidia drivers.


Greg Woods <greg at gregandeva.net>, said on Sat Apr 26, 2008 [03:51:58 PM]:
} I have been trying for a couple of months now to get the 0.21 Myth
} packages from ATrpms to work well on my Fedora 8 system. I am at a dead
} end. If I remove all the myth* packages, and try compiling from my old
} 0.20 SVN source, is there a chance this could actually work? This
} version did work well under FC5 on the same hardware, so I do not
} believe my problem is lack of hardware power. It has to be software
} configuration, but I have tried everything I can think of. I  have tried
} every playback profile from CPU-- to CPU++, and I still get "NVP:
} prebuffering pause" filling my logs, and choppy or bad looking HD
} playback. I also cannot get Myth to work with ALSA; the only way I can
} get any audio at all is to use /dev/dsp (OSS). I've been told this is a
} Pulseaudio problem, but I can't figure out how to make it work, and
} removing the pulseaudio stuff from the alsa.conf file doesn't help
} anyway. (The OSS audio works well enough, but I'll need ALSA eventually
} when I move to optical sound output). I have also tried both 96 and 169
} versions of the Nvidia driver (GeForce 5500); the 96 versions don't work
} at all on this system, and it doesn't matter which subversion of the 169
} driver I use, I still get crappy playback.
} 
} The closest I came to acceptable was the CPU-- profile, and that looks
} OK for shows like "ER", but looks terrible for anything with fast motion
} (like hockey). Even with "ER", I get prebuffering pauses when I first
} start playback with crackly audio for a few seconds, then it settles
} down and looks OK even though the prebuffering pause messages continue
} in the log. Attached is a log sample, just in case it makes light bulbs
} come on for anybody still reading this.
} 
} My next plan, when I feel a little less discouraged than  do right now,
} is to try the 0.20 SVN sources. I feel like I have nothing to lose.
} 
} --Greg
} 
} 
} 

} 2008-04-26 13:59:48.958 XMLParse::LoadTheme using /usr/share/mythtv/themes/MythCenter/ui.xml
} 2008-04-26 13:59:52.108 AFD: Opened codec 0xad213770, id(MPEG2VIDEO) type(Video)
} 2008-04-26 13:59:52.108 AFD: codec AC3 has 6 channels
} 2008-04-26 13:59:52.109 AFD: Opened codec 0xb2646dc0, id(AC3) type(Audio)
} 2008-04-26 13:59:55.293 TV: Attempting to change from None to WatchingRecording
} 2008-04-26 13:59:55.313 Using protocol version 40
} 2008-04-26 13:59:55.319 DPMS Deactivated 
} 2008-04-26 13:59:55.702 AFD: Opened codec 0xa0b33b0, id(MPEG2VIDEO_XVMC) type(Video)
} 2008-04-26 13:59:55.703 AFD: codec AC3 has 6 channels
} 2008-04-26 13:59:55.704 AFD: Opened codec 0xa1e96c0, id(AC3) type(Audio)
} 2008-04-26 13:59:55.706 Opening audio device '/dev/dsp'. ch 2(2) sr 48000
} 2008-04-26 13:59:55.706 Opening OSS audio device '/dev/dsp'.
} 2008-04-26 13:59:57.033 VideoOutputXv: XvMC Adaptor Name: 'NV17 Video Texture'
} 2008-04-26 13:59:57.093 VideoOutputXv: Ack! Disabling ChromaKey OSD
} 			We can't use ChromaKey OSD if chromakeying is not supported!
} 2008-04-26 13:59:57.105 VideoOutputXv: XvMC Adaptor Name: 'NV17 Video Texture'
} 2008-04-26 13:59:57.171 OSD Theme Dimensions W: 640 H: 480
} 2008-04-26 13:59:58.749 TV: Changing from None to WatchingRecording
} 2008-04-26 13:59:58.753 Failed to approve 'onefield' deinterlacer
} 2008-04-26 13:59:58.753 Couldn't load deinterlace filter 
} 2008-04-26 13:59:58.758 Realtime priority would require SUID as root.
} 2008-04-26 13:59:58.855 Video timing method: USleep with busy wait
} 2008-04-26 14:00:29.049 VideoOutputXv Error: Child     A        was already marked as available.
} 2008-04-26 14:00:29.064 VideoOutputXv Error: Child     A        was already marked as available.
} 2008-04-26 14:00:29.064 VideoOutputXv Error: Child     A        was already marked as available.
} 2008-04-26 14:00:29.065 VideoOutputXv Error: Child     A        was already marked as available.
} 2008-04-26 14:00:29.789 NVP: prebuffering pause
} 2008-04-26 14:00:30.262 NVP: prebuffering pause
} 2008-04-26 14:00:30.364 NVP: prebuffering pause
} 2008-04-26 14:00:30.415 NVP: prebuffering pause
} 2008-04-26 14:00:32.334 NVP: prebuffering pause
} 2008-04-26 14:00:32.341 NVP: prebuffering pause
} 2008-04-26 14:00:32.362 NVP: prebuffering pause
} 2008-04-26 14:00:32.388 NVP: prebuffering pause
} 2008-04-26 14:00:32.406 NVP: prebuffering pause
} 
} ..etc.
} 
} 2008-04-26 14:00:49.273 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost!
} 2008-04-26 14:00:49.274 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost!
} 

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-- 
"Why is it so hot inside this handbasket?"
--
Steve Heistand
steve at heistand.org


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