[mythtv-users] PVR350 video out very slow (Nvidia way better)
Jay Love
jsliv at jslove.org
Fri Feb 6 10:04:18 EST 2004
Sounds like you didn't tell Myth to use the PVR-350 for video-out. In
the settings for TV there's a checkbox to use the PVR-350, did you check
it? Otherwise, it'll try to treat the PVR-350 FrameBuffer as a regular
videocard, and the 350 is really crappy as a regular videocard.
Jay
Emmanuel Hislen wrote:
> Hi,
>
> I hope this is not one of these questions that have been asked a
> hundred times. I looked in the archives but did not find a solution.
>
> I started using my basic GeForce 4 card for TV-out, and it's been
> working OK so far (I say OK only because I am still not very happy
> with the quality, but that's because I still haven't set high enough
> MPEG2 bitrates I believe).
>
> For the sound I am using the PVR-350 output and it is working very
> well, in sync with the tv-out of the nvidia.
>
> Anyway when I try to use the PVR350 TV-out, with a XF86Config file I
> grabbed from this mailing list, it works but the quality is TERRIBLE
> choppy video and sound.
> Funny as soon as I do Ctrl-tab to get an xterm in another virtual
> screen, the sound is not choppy any more.
>
> CPU usage is close to zero (AMD XP 2600).
>
> One obvious thing that comes to my mind is that my GF4 is on the AGP
> bus which is obviously a big advantage over the Haupauge. On the other
> hand on the archives I only see people enthusiastic about the tv-out
> quality of the PVR350, like there is no coming back from it after
> seeing it.
>
> So at this point I have ruled out things like DMA or capture problems,
> because it's working with the nvidia.
>
> I did check the box in the TV Playback config so that raw MPEG2 would
> be fed to the PVR350 (I uncheck this when I use the nvidia).
>
> I tried with and without deinterlacing, no difference.
>
>
> I just found out I am getting some very scary warnings in the output
> of mythfrontend (see below) about my system not being performant enoug
> for the resolution and mythtv not being able to use X. I do not get
> any of these warnings when using the Nvidia card.
> Because of this I hope this is just an X configuration issue, I just
> haven't been able to see which one :-)
>
> Any suggestion, ideas?
>
> I included below my X11 config files: they are the only software
> difference between the 2 configurations.
>
> Thanks,
>
> Emmanuel.
>
> --------------------------------------------------------------------------------------------------
>
> NVIDIA GEFORCE 4
> --------------------------------------------------------------------------------------------------
>
> # XFree86 4 configuration created by pyxf86config
>
> Section "ServerLayout"
> Identifier "Default Layout"
> Screen 0 "Screen0" 0 0
> InputDevice "Mouse0" "CorePointer"
> InputDevice "Keyboard0" "CoreKeyboard"
> InputDevice "DevInputMice" "AlwaysCore"
> EndSection
>
> Section "Files"
> RgbPath "/usr/X11R6/lib/X11/rgb"
> ModulePath "/usr/X11R6/lib/modules/extensions/nvidia"
> ModulePath "/usr/X11R6/lib/modules/extensions"
> ModulePath "/usr/X11R6/lib/modules"
> FontPath "unix/:7100"
> EndSection
>
> Section "Module"
> Load "dbe"
> Load "extmod"
> Load "fbdevhw"
> Load "glx"
> Load "record"
> Load "freetype"
> Load "type1"
> EndSection
>
> Section "InputDevice"
> Identifier "Keyboard0"
> Driver "keyboard"
> Option "XkbRules" "xfree86"
> Option "XkbModel" "pc105"
> Option "XkbLayout" "us"
> EndSection
>
> Section "InputDevice"
> Identifier "Mouse0"
> Driver "mouse"
> Option "Protocol" "IMPS/2"
> Option "Device" "/dev/psaux"
> Option "ZAxisMapping" "4 5"
> Option "Emulate3Buttons" "no"
> EndSection
>
> Section "InputDevice"
> Identifier "DevInputMice"
> Driver "mouse"
> Option "Protocol" "IMPS/2"
> Option "Device" "/dev/input/mice"
> Option "ZAxisMapping" "4 5"
> Option "Emulate3Buttons" "no"
> EndSection
>
> Section "Monitor"
> Identifier "Monitor0"
> VendorName "Monitor Vendor"
> ModelName "NEC MultiSync E700"
> DisplaySize 320 240
> HorizSync 31.0 - 82.0
> VertRefresh 55.0 - 120.0
> # Option "dpms"
> EndSection
>
> Section "Device"
> Identifier "Videocard0"
> Driver "nvidia"
> VendorName "Gainward"
> BoardName "NVIDIA GeForce 4 MX (generic)"
> Option "RenderAccel" "1"
> # TV Out Setup
> Option "ConnectedMonitor" "TV"
> Option "TVStandard" "NTSC-M"
> Option "TVOutFormat" "COMPOSITE"
> Option "TVOverScan" "0.6"
> EndSection
>
> Section "Screen"
> Identifier "Screen0"
> Device "Videocard0"
> Monitor "Monitor0"
> DefaultDepth 24
> SubSection "Display"
> Depth 24
> Modes "1024x768" "800x600" "640x480"
> EndSubSection
> EndSection
>
> Section "DRI"
> Group 0
> Mode 0666
> EndSection
>
> --------------------------------------------------------------------------------------------------
>
> PVR-350
> --------------------------------------------------------------------------------------------------
>
> # XFree86 4 configuration created by pyxf86config
> Section "ServerLayout"
> Identifier "XFree86 Configured"
> Screen 0 "TV Screen"
> InputDevice "Mouse0" "CorePointer"
> InputDevice "Keyboard0" "CoreKeyboard"
> InputDevice "DevInputMice" "AlwaysCore"
> EndSection
>
>
> Section "Files"
> RgbPath "/usr/X11R6/lib/X11/rgb"
> ModulePath "/usr/X11R6/lib/modules/extensions/nvidia"
> ModulePath "/usr/X11R6/lib/modules/extensions"
> ModulePath "/usr/X11R6/lib/modules"
> FontPath "unix/:7100"
> EndSection
>
> Section "Module"
> Load "dbe"
> Load "extmod"
> Load "fbdevhw"
> Load "glx"
> Load "record"
> Load "freetype"
> Load "type1"
> Load "v4l"
> EndSection
>
> Section "InputDevice"
> Identifier "Keyboard0"
> Driver "keyboard"
> Option "XkbRules" "xfree86"
> Option "XkbModel" "pc105"
> Option "XkbLayout" "us"
> EndSection
>
> Section "InputDevice"
> Identifier "Mouse0"
> Driver "mouse"
> Option "Protocol" "IMPS/2"
> Option "Device" "/dev/psaux"
> Option "ZAxisMapping" "4 5"
> Option "Emulate3Buttons" "no"
> EndSection
>
> Section "InputDevice"
> Identifier "DevInputMice"
> Driver "mouse"
> Option "Protocol" "IMPS/2"
> Option "Device" "/dev/input/mice"
> Option "ZAxisMapping" "4 5"
> Option "Emulate3Buttons" "no"
> EndSection
>
> Section "Monitor"
> Identifier "NTSC Monitor"
> VendorName "SONY"
> ModelName "TV OUT"
> HorizSync 30-68
> VertRefresh 50-120
> Mode "720x480"
> # D: 34.563 MHz, H: 37.244 kHz, V: 73.897 Hz
> DotClock 34.564
> HTimings 720 752 840 928
> VTimings 480 484 488 504
> Flags "-HSync" "-VSync"
> EndMode
> EndSection
>
>
> Section "Device"
> Identifier "Hauppauge PVR 350 iTVC15 Framebuffer"
> Driver "fbdev"
> Option "fbdev" "/dev/fb0"
> ### change fb1 to whatever number you got in the previous section
> BusID "01:08.0"
> ### change the busid to whatever is reported by lspci -v
> EndSection
>
>
> Section "Screen"
> Identifier "TV Screen"
> Device "Hauppauge PVR 350 iTVC15 Framebuffer"
> Monitor "NTSC Monitor"
> DefaultDepth 24
> DefaultFbbpp 32
> Subsection "Display"
> Depth 24
> FbBpp 32
> Modes "720x480"
> EndSubsection
> EndSection
>
>
> Section "DRI"
> Group 0
> Mode 0666
> EndSection
>
> --------------------------------------------------------------------------------------------------
>
> mythfrontend output when using PVR350 tv-out
> --------------------------------------------------------------------------------------------------
>
>
> lib: extension "GLX" missing on display ":0.0".
> Xlib: extension "GLX" missing on display ":0.0".
> 2004-02-05 23:15:31 Enabled verbose msgs : important general
> 2004-02-05 23:15:40 Connecting to backend server: 127.0.0.1:6543 (try
> 1 of 5)
> Input #0, mpeg, from
> 'rbuf://127.0.0.1:6543/var/cache/mythtv/ringbuf1.nuv':
> Stream #0.0: Video: mpeg1video, 720x480, 29.97 fps
> Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
> 2004-02-05 23:15:42 Opening OSS audio device '/dev/dsp'.
> ***
> * Couldn't find Xv support, falling back to non-Xv mode.
> * MythTV performance will be much slower since color
> * conversion and scaling will be done in software.
> * Consider upgrading your video card or X server if
> * you would like better performance.
> 2004-02-05 23:15:42 Changing from None to WatchingLiveTV
> 2004-02-05 23:15:44 prebuffering pause
> 2004-02-05 23:15:45 prebuffering pause
> ***
> * Your system is not capable of displaying the
> * full framerate at 720x480 resolution. Frames
> * will be skipped in order to keep the audio and
> * video in sync.
> 2004-02-05 23:15:47 prebuffering pause
> 2004-02-05 23:15:49 Changing from WatchingLiveTV to None
> 2004-02-05 23:15:49 Changing from None to None
> --------------------------------------------------------------------------------------------------
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