[mythtv-users] Re:Bad quality MythTV playback

Richard J. Sands rjsands at hotmail.com
Mon Dec 1 16:43:47 EST 2003


How would I go about determining if the channels are fine tuned?  And if 
they are not where can I look to learn how to do this?

Thanks.

_______

Re:Bad quality MythTV playback   [In reply to]
Are your channels fine tuned to the exact frequency needed?

Start there.

Bruce

"Richard J. Sands" wrote:

>Bad MythTV playback quality
>
>When I watch live TV (or recorded TV) the quality is pretty crappy, there
>are waves going across the screen, it is fuzzy, and some channels have no
>color. Certain channels look better then others and it is basically
>watchable but nowhere near as crisp as it should be. (The issue is both on
>the monitor and TV-out). I have run a recorded show’s .nuv file in mplayer
>and it looks bad there as well. I have tried things such as checking
>deinterlacing, selecting Cable-hrc, /usr/lib/ivtv/test_ioctl -u 0x3000,
>/usr/lib/ivtv/test_ioctl -p 4, /usr/lib/ivtv/test_ioctl -f
>width=720,height=480, and /usr/lib/ivtv/test_ioctl -v input=3,output=1.
>
>I have done a test capture (cat /dev/video0 > /tmp/test_capture.mpg) and it
>looks good and crisp in mplayer, so it makes me think I need to tweak some
>MythTV setting. Also, playing a DVD in MythDVD looks crisp.
>
>I have hunted the archives for a few days now and have not found the
>solution. So please let me know if you have any ideas.
>
>Thanks.
>-- Rich
>
>Setup:
>Built MythTV following Jarod C. Wilson’s install Guide (GREAT GUIDE!!!!)
>Hauppauge WinTV PVR-350
>nVidia GeForce 4 MX 440
>SoundBlaster Live 5.1
>Maxtor 200Gig Drive
>MSI VIA KT4 (AMD)
>512 DDR Ram
>
>Modules.conf
>
>path[toplevel]=/lib/modules/`uname -r`/updates
># default path
>path[toplevel]=/lib/modules/`uname -r`
>alias char-major-61 lirc_i2c
>alias eth0 via-rhine
>
># ivtv modules setup
>alias char-major-81 videodev
>alias char-major-81-0 ivtv
>options ivtv debug=1
>options tuner type=2
>options msp3400 once=1 simple=1
>add below ivtv msp3400 saa7115 tuner
>add above ivtv lirc_dev lirc_i2c
>
>alias usb-controller ehci-hcd
>alias sound-slot-0 emu10k1
># alias sound-slot-1 via82cxxx_audio
># post-install sound-slot-1 /bin/aumix-minimal -f /etc/.aumixrc -L
> >/dev/null 2>&1 || :
># pre-remove sound-slot-1 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null
>2>&1 || :
>alias usb-controller1 usb-uhci
>alias char-major-195 nvidia
>
># ALSA portion
>alias char-major-116 snd
>alias snd-card-0 snd-emu10k1
># OSS/Free compatability portion
>alias char-major-14 soundcore
>alias sound-slot-0 snd-card-0
># Sound card #1
>alias sound-service-0-0 snd-mixer-oss
>alias sound-service-0-1 snd-seq-oss
>alias sound-service-0-3 snd-pcm-oss
>alias sound-service-0-8 snd-seq-oss
>alias sound-service-0-12 snd-pcm-oss
># Save & restore settings
>post-install snd-card-0 /usr/sbin/alsactl restore >/dev/null 2>&1 || :
>pre-remove snd-card-0 /usr/sbin/alsactl store >/dev/null 2>&1 || :
>
>_________________________________________________________________
>Need a shot of Hank Williams or Patsy Cline? The classic country stars are
>always singing on MSN Radio Plus. Try one month free!
>http://join.msn.com/?page=offers/premiumradio
>
>------------------------------------------------------------------------
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