[mythtv] My MythTv Settings for P3 1000Mhz w 512 MB Ram

Christopher Mind mythtv-dev@snowman.net
Sat, 14 Dec 2002 14:42:24 +0000

Are you using the CVS build or myth .7 ? I ask because of the overscan and 
underscan feature which was not in the settings for myth.7.  I have read in 
some posts that the latest cvs build is unstable or difficult to compile.  

>From: Nathan Langley <nathan@viptx.net>
>Reply-To: mythtv-dev@snowman.net
>To: mythtv-dev@snowman.net
>Subject: [mythtv] My MythTv Settings for P3 1000Mhz w 512 MB Ram
>Date: Fri, 13 Dec 2002 23:46:00 -0600
>Here is my settings file.  Im running a P3 1000mhz with 512mb ram and a 
>Seagate IV drive.  The drive tests to 38mbs/sec.
>With these settings I can watch and record at the same time at about 50% 
>usage if I up the res to 480x480 I can record and watch at about 85%.
># Live TV options
># Size of the buffer for watching live tv, in GB
>int BufferSize=1
># The amount of space to fill the buffer up before
>forcing an unpause, in MB
># Basically, the minimum amount of free space that the buffer will allow 
># forcing an unpause.
>int MaxBufferFill=50
># The desired path + name of the live tv buffer
>str BufferName=/mnt/Media/Tmp/ringbuf.nuv
># Path to store recordings in
>str RecordFilePrefix=/mnt/Media/Tmp/
># Record settings
># Video settings
># Resolution to capture at
>int Width=352
>int Height=384
># What codec to use?  Tested values are rtjpeg (the default) and mpeg4
>str Codec=mpeg4
># I normally use 640x480 with the mpeg4 codec and the below settings.
># RTjpeg specific settings
># Quality level to capture at (higher better, 255 being best)
>int Quality=170
># Motion Levels (lower better, 0 being best)
>int LumaFilter=0
>int ChromaFilter=0
># MPEG4 specific settings
># Desired bitrate, in bits/second.  2200 means about a gigabyte an hour.
>int TargetBitrate=3300
># Scale bitrate by frame size.  If this is set to 1, the target bitrate 
># above will be used as a guideline for 640x480.  Other resolutions will 
># the target bitrate down according to the framesize.
>int ScaleBitrate=1
># Maximum quality level.  1 is best, 31 is worst
>int MaxQuality=2
># Minimum quality level.  1 is best, 31 is worst
>int MinQuality=7
># Maximum quality difference between frames.
>int QualDiff=3
># Hardware MJPEG specific settings
># Quality level (0 - 100)
>int HardwareMJPEGQuality=100
># Decimation (as in lavrec) -- overrides the video size set above.
># 1 is 720x480, 2 is 352x240 (at least in NTSC-land).
>int HardwareMJPEGDecimation=2
># Audio settings
># dsp device -- output only
>str AudioDevice=/dev/dsp
># Audio Sample Rate: one of 32000, 44100, 48000
>int AudioSampleRate=32000
># Turn off the audio compression? 1 for yes, 0 for no.  Compression saves 
># megabytes an hour, but takes extra CPU time.
>int DontCompressAudio=0
># Quality level for the MP3 compression (0 best - 9 worst)
>int MP3Quality=7
># Length of time to record past the end of a show, in seconds
>int RecordOverTime=5
># Playback options
># Deinterlace playback (1 for on, 0 for no) -- adds to CPU usage
>int Deinterlace=1
># How long to skip forward on a fast forward?
>int FastForwardAmount=25
># How long to skip backwards on a rewind?
>int RewindAmount=7
># Are seeks exact, down to the video frame?
>int ExactSeeking=0
># Are the fast forward and rewind keys sticky (auto-repeat after letting 
># (set FastForwardAmount and RewindAmount to 1 for good behavior if this is 
>int StickyKeys=0
># How long should the OSD stay up for in seconds?
>int OSDDisplayTime=4
># Theme to use for the OSD, if 'none' or otherwise doesn't exist, the 
># ugly OSD will be used instead.
>str OSDTheme=defaultosd
># Path to the TTF used in the OSD.
>str OSDFont=FreeSans.ttf
>#str OSDFont=/usr/share/fonts/truetype/Arial.ttf
># Channel ordering.  How to choose the next channel when using the up/down
># keys on the remote.
># Possible values are: channum, chanid, callsign
># channum is the default, channel 4 follows channel 3
># chanid sorts according to the internal database order
># callsign sorts according to the channel's callsign, like TVLAN, TWC, USA
>str ChannelOrdering=channum + 0
># Which input on the tuner card to start on?
>str TunerCardInput=Television
># TV options
>str TVFormat=NTSC
>str FreqTable=us-cable
># Over/underscan options
># do we over or underscan inside mythtv?  either 'overscan' or 'underscan'
>str VertScanMode=overscan
>str HorizScanMode=overscan
># How much do we chop (or add)?  %, 0 - 100
>int VertScanPercentage=3
>int HorizScanPercentage=0
># How much do we offset the picture?
>int xScanDisplacement=4
>int yScanDisplacement=17
>Nathan Langley
>Linux > BSD > MacOS > DOS > Windows
>mythtv-dev mailing list

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