[mythtv] CVS Newbie

Cedar McKay cedarmckay at mac.com
Tue Jan 21 13:06:20 EST 2003


http://mythtv.org/docs/mythtv-HOWTO-1.html

cedar

RoMaN wrote:

>hi there - i'm new to cvs - could someone provide me the information to access the CVS root and login to obtain the latest development packages of mythtv???
>
>thank you.
>
>
>
>On Tue, Jan 21, 2003 at 02:47:32PM -0600, John Joseph Roets wrote:
>  
>
>>Hello all.
>>I'm running Myth and getting jerky/jittery video.
>>Video is jittery to very jittery in live TV mode (and sometimes, in
>>playback mode).  It seems that the mpeg4 setting gives me better
>>quality, yet is much more jerky.  I've been recording with rtjpeg
>>settings below, and have gotten very large files (~3300-5400 KB/hr.) as
>>a result (I will ask that question next, after I see the file sizes
>>generated today with mpeg4 settings).
>>I was hoping that it was due to dma settings, but that is apparently not
>>the case.
>>Would I gain much in not compressing the audio?
>>Is there something in my system which inherently causes/allows this?
>>
>>Any help would be greatly appreciated.
>>Thanks in advance.
>>
>>I have:
>>IBM Netvista P4 @ 1.8 GHz 256MB RAM
>>ATI TV-Wonder VE
>>Intel i810 onboard sound with ALSA
>>nVidia Vanta/Vanta LT (AGP)
>>RH 8.0 -- Gnome
>>AVermedia AVerkey iMicro VGA to NTSC box
>>54 in. rear-projection bigscreen
>>
>>- What version of MythTV are you running?
>>0.7
>>
>>- settings file 
>>480x480
>>rtjpeg
>> Quality=255
>>mpeg4
>> TargetBitrate=2200
>>Deinterlace=1
>>All other settings in settings.txt are default, no change.
>>
>>- What resolution?
>>480x480 (I've tried 640x480, as it should work fine with this box, and
>>while it is clearer, it causes much slowdown/jitter).
>>
>>- What codec are you using?
>>rtjpeg -- less jitter, but still some.  Quality at 255
>>mpeg4 -- seems better quality, but certainly more jitter.  Target
>>bitrate at 2200.
>>
>>- Are you using the nvidia binary driver?
>>nvidia module
>>
>>- Is your mysql colocated on the server with mythtv?
>>Yes.
>>
>>- What is your disk speed? 7200? 5400? Other?
>>7200
>>
>>- HD info [hdparm -I /dev/hda]?
>>/dev/hda:
>>
>>ATA device, with non-removable media
>>        Model Number:       MAXTOR 6L040J2
>>        Serial Number:      662205637151
>>        Firmware Revision:  A93.0500
>>Standards:
>>        Used: ATA/ATAPI-5 T13 1321D revision 1
>>        Supported: 5 4 3 2 & some of 6
>>Configuration:
>>        Logical         max     current
>>        cylinders       16383   16383
>>        heads           16      16
>>        sectors/track   63      63
>>        --
>>        CHS current addressable sectors:   16514064
>>        LBA    user addressable sectors:   78177792
>>        device size with M = 1024*1024:       38172 MBytes
>>        device size with M = 1000*1000:       40027 MBytes (40 GB)
>>Capabilities:
>>        LBA, IORDY(can be disabled)
>>        bytes avail on r/w long: 4      Queue depth: 1
>>        Standby timer values: spec'd by Vendor, no device specific
>>minimum
>>        R/W multiple sector transfer: Max = 16  Current = 16
>>        Recommended acoustic management value: 128, current value: 254
>>        DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
>>udma6
>>             Cycle time: min=120ns recommended=120ns
>>        PIO: pio0 pio1 pio2 pio3 pio4
>>             Cycle time: no flow control=120ns  IORDY flow control=120ns
>>Commands/features:
>>        Enabled Supported:
>>           *    READ BUFFER cmd
>>           *    WRITE BUFFER cmd
>>           *    Host Protected Area feature set
>>           *    Look-ahead
>>           *    Write cache
>>           *    Power Management feature set
>>                Security Mode feature set
>>           *    SMART feature set
>>           *    Mandatory FLUSH CACHE command
>>           *    Device Configuration Overlay feature set
>>           *    Automatic Acoustic Management feature set
>>                SET MAX security extension
>>           *    DOWNLOAD MICROCODE cmd
>>           *    SMART self-test
>>           *    SMART error logging
>>Security:
>>        Master password revision code = 65534
>>                supported
>>        not     enabled
>>        not     locked
>>                frozen
>>        not     expired: security count
>>        not     supported: enhanced erase
>>        20min for SECURITY ERASE UNIT.
>>HW reset results:
>>        CBLID- above Vih
>>        Device num = 0 determined by CSEL
>>Checksum: correct
>>
>>- What is your disk buffer size? 2MB? Other?
>>[ cat /proc/ide/hda/cache ]
>>1819
>>
>>- What are your dma, multcount, and prefetch settings?
>>[ hdparm /dev/hda ]
>>/dev/hda:
>> multcount    = 16 (on)
>> IO_support   =  0 (default 16-bit)
>> unmaskirq    =  0 (off)
>> using_dma    =  1 (on)
>> keepsettings =  0 (off)
>> readonly     =  0 (off)
>> readahead    =  8 (on)
>> geometry     = 4866/255/63, sectors = 78177792, start = 0
>>
>>- What are your "elevator" settings? [ elvtune /dev/hda1 ]
>>/dev/hda1 elevator ID           0
>>        read_latency:           8192
>>        write_latency:          16384
>>        max_bomb_segments:      6
>>
>>- What is your CPU and bus speed? [ cat /proc/cpuinfo ]
>>processor       : 0
>>vendor_id       : GenuineIntel
>>cpu family      : 15
>>model           : 1
>>model name      : Intel(R) Pentium(R) 4 CPU 1.80GHz
>>stepping        : 2
>>cpu MHz         : 1794.252
>>cache size      : 256 KB
>>fdiv_bug        : no
>>hlt_bug         : no
>>f00f_bug        : no
>>coma_bug        : no
>>fpu             : yes
>>fpu_exception   : yes
>>cpuid level     : 2
>>wp              : yes
>>flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>>mca cmov
>>pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
>>bogomips        : 3567.44
>>
>>- What is your memory type, speed, configuration, and size?
>>256MB
>>
>>- What is your motherboard chipset? [ a function of `cat /proc/pci` ]
>>[root at mythtv root]# cat /proc/pci
>>PCI devices found:
>>  Bus  0, device   0, function  0:
>>    Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge
>>(rev 3).
>>      Prefetchable 32 bit memory at 0xf4000000 [0xf7ffffff].
>>  Bus  0, device   1, function  0:
>>    PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge
>>(rev 3).
>>      Master Capable.  Latency=96.  Min Gnt=12.
>>  Bus  0, device  30, function  0:
>>    PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 18).
>>      Master Capable.  No bursts.  Min Gnt=6.
>>  Bus  0, device  31, function  0:
>>    ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 18).
>>  Bus  0, device  31, function  1:
>>    IDE interface: Intel Corp. 82801BA IDE U100 (rev 18).
>>      I/O at 0x1800 [0x180f].
>>  Bus  0, device  31, function  2:
>>    USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 18).
>>      IRQ 11.
>>      I/O at 0x1820 [0x183f].
>>  Bus  0, device  31, function  3:
>>    SMBus: Intel Corp. 82801BA/BAM SMBus (rev 18).
>>      IRQ 5.
>>      I/O at 0x1810 [0x181f].
>>  Bus  0, device  31, function  4:
>>    USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 18).
>>      IRQ 10.
>>      I/O at 0x1840 [0x185f].
>>  Bus  0, device  31, function  5:
>>    Multimedia audio controller: Intel Corp. 82801BA/BAM AC'97 Audio
>>(rev 18).
>>      IRQ 5.?
>>      I/O at 0x1c00 [0x1cff].
>>      I/O at 0x1880 [0x18bf].
>>  Bus  1, device   0, function  0:
>>    VGA compatible controller: nVidia Corporation Vanta [NV6] (rev 21).
>>      IRQ 5.
>>      Master Capable.  Latency=248.  Min Gnt=5.Max Lat=1.
>>      Non-prefetchable 32 bit memory at 0xf0000000 [0xf0ffffff].
>>      Prefetchable 32 bit memory at 0xf8000000 [0xf9ffffff].
>>  Bus  2, device   8, function  0:
>>    Ethernet controller: Intel Corp. 82801BA/BAM/CA/CAM Ethernet
>>Controller (rev 3).
>>      IRQ 11.
>>      Master Capable.  Latency=66.  Min Gnt=8.Max Lat=56.
>>      Non-prefetchable 32 bit memory at 0xf2000000 [0xf2000fff].
>>      I/O at 0x2000 [0x203f].
>>  Bus  2, device  14, function  0:
>>    Multimedia video controller: Brooktree Corporation Bt878 (rev 17).
>>      IRQ 5.
>>      Master Capable.  Latency=132.  Min Gnt=16.Max Lat=40.
>>      Prefetchable 32 bit memory at 0xfb000000 [0xfb000fff].
>>  Bus  2, device  14, function  1:
>>    Multimedia controller: Brooktree Corporation Bt878 (rev 17).
>>      IRQ 5.
>>      Master Capable.  Latency=33.  Min Gnt=4.Max Lat=255.
>>      Prefetchable 32 bit memory at 0xfb001000 [0xfb001fff].
>>
>>- What is your kernel version? [ uname -a ]
>>Linux mythtv 2.4.18-19.8.0 #1 Thu Dec 12 05:39:29 EST 2002 i686 i686
>>i386 GNU/Linux
>>
>>-- 
>>
>>/**
>> * john joseph roets
>> * createTank
>> * www.createtank.com
>> * 785.550.3654
>> * joe at createtank.com
>> */ 
>>
>>_______________________________________________
>>mythtv-dev mailing list
>>mythtv-dev at snowman.net
>>http://www.snowman.net/mailman/listinfo/mythtv-dev
>>    
>>
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