[mythtv] Disable software encoder to record as raw video format

[Marcos Iuato]

Hi,

Is it possible to disable software encoder to not use mpeg2 or mpeg4 
when  recording video? I would like to record as raw format.

Why? Becouse I have a hardware that I am using as my personal computer 
and my pvr with mythtv, with a dualhead configuration, so I am using one 
screen connected to my TV running Mythtv and at screen two connected to 
a vga running xfce.

My video capture doesn't have hardware mpeg2 encoder, just hardware 
mpeg2 decoder.

So if I do not software encoder, it will use less cpu and memory. All of 
this becouse when running just mythtv, it is in swap and cpu idle is ~5% 
when wathing live TV.

And sometimes It gets image freezing when watching live tv, when this 
happens I get "2007-04-10 08:56:49.049 NVP: prebuffering pause".

sar -p
08:47:01          all     79,44      0,00     10,30      4,96      0,00 
      5,31
08:48:03          all     80,82      0,00      6,35      5,46      0,00 
      7,37
08:49:02          all     75,71      0,00      8,94      5,92      0,00 
      9,43
08:50:02          all     84,79      0,00      6,28      4,47      0,00 
      4,47
08:51:01          all     80,67      0,00      8,59      3,56      0,00 
      7,18
08:52:02          all     85,19      0,00      5,84      3,76      0,00 
      5,21

top - 08:55:51 up 21:33,  4 users,  load average: 5.50, 4.63, 4.15
Tasks:  81 total,   2 running,  79 sleeping,   0 stopped,   0 zombie
Cpu(s): 83.8%us,  2.3%sy,  0.0%ni,  7.9%id,  6.0%wa,  0.0%hi,  0.0%si, 
0.0%st
Mem:    224304k total,   220444k used,     3860k free,      320k buffers
Swap:   979956k total,   114452k used,   865504k free,    82360k cached

   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND 
 

27648 root      18   0  258m  43m  15m S 54.9 19.6  80:10.84 mythbackend 
 

  9636 sdm       15   0  187m  89m  27m R 24.2 40.8  21:43.45 
mythfrontend 

  4711 root      15   0 78716  27m  11m S  5.3 12.7  27:07.64 Xorg 
 

  4801 sdm       15   0 37960 1940 1712 S  0.3  0.9   1:15.01 python 
 

     1 root      15   0  1948  540  512 S  0.0  0.2   0:02.07 init 
 

     2 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 
migration/0


cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Celeron(R) M processor         1.20GHz
stepping        : 6
cpu MHz         : 1200.062
cache size      : 512 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 mce cx8 apic sep mtrr pge mca 
cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe up
bogomips        : 2401.59

Memory: 256MB
Debian etch
Mythtv 0.20-svn20070223-0.0
Kernel 2.6.18
Filesystem: XFS in a 10GB partition.