CPU load with -vo mpegpes and -ao oss or similar

Hello,

I try to use a Technotrend V1.6 DVB-Card.

mplayer -quiet -vo mpegpes -ao mpegpes ...  is working fine.
About 50% CPU load on my Athlon XP 2400 when player a divx-File.

But:
mplayer -quiet -vo mpegpes -ao oss ... uses 100% CPU and the video is 
very bad.
Only about 1 frame per second. Same with -ao alsa9 and with -ao null

-nosound work ok. (no sound of course :-) )

What could be the reason for this? Recoding sound should not be that 
expensive!?
I want to use this way of audio output because my sound card has got a 
digital cable
to my ampifier - but my DVB card does not have a digital output. At the 
moment I
am not able to use this DVB card :-(

BTW. xosview shows most of the used CPU time as "SYS" (red bar) when 
using -ao oss/alsa9/null.

If it helps, below is my mplayer output.

Any help is apreciated.


Dirk

-------
Using GNU internationalization
Original domain: messages
Original dirname: /usr/share/locale
Current domain: mplayer
Current dirname: /usr/local/share/locale

MPlayer 1.0pre3-3.3 (C) 2000-2003 MPlayer Team

CPU: Advanced Micro Devices Athlon MP/XP Thoroughbred 1992 MHz (Family: 
6, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE

Reading config file /usr/local/etc/mplayer/mplayer.conf: Datei oder 
Verzeichnis nicht gefunden
Reading config file /root/.mplayer/config
Reading /root/.mplayer/codecs.conf: Can't open 
'/root/.mplayer/codecs.conf': Datei oder Verzeichnis nicht gefunden
Reading /usr/local/etc/mplayer/codecs.conf: Can't open 
'/usr/local/etc/mplayer/codecs.conf': Datei oder Verzeichnis nicht gefunden
Using built-in default codecs.conf.
CommandLine: '-v' '-quiet' '-vo' 'mpegpes' '-ao' 'null' 
'/data/vcr/anschauen/StarTreck/Voyager/2004-01-03_1700_Star_Trek_-_Raumschiff_Voyager_-_Nacht_1655-70m.keep.ldivx1800-2p.avi'
init_freetype
get_path('font/font.desc') -> '/root/.mplayer/font/font.desc'
font: can't open file: /root/.mplayer/font/font.desc
Font /usr/local/share/mplayer/font/font.desc loaded successfully! (206 
chars)
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
Using Linux hardware RTC timing (1024Hz).
get_path('input.conf') -> '/root/.mplayer/input.conf'
Can't open input config file /root/.mplayer/input.conf: Datei oder 
Verzeichnis nicht gefunden
Can't open input config file /usr/local/etc/mplayer/input.conf: Datei 
oder Verzeichnis nicht gefunden
Falling back on default (hardcoded) input config
Setting up LIRC support...
get_path('2004-01-03_1700_Star_Trek_-_Raumschiff_Voyager_-_Nacht_1655-70m.keep.ldivx1800-2p.avi.conf') 
-> 
'/root/.mplayer/2004-01-03_1700_Star_Trek_-_Raumschiff_Voyager_-_Nacht_1655-70m.keep.ldivx1800-2p.avi.conf'

Playing 
/data/vcr/anschauen/StarTreck/Voyager/2004-01-03_1700_Star_Trek_-_Raumschiff_Voyager_-_Nacht_1655-70m.keep.ldivx1800-2p.avi.
[file] File size is 1030879154 bytes
STREAM: [file] 
/data/vcr/anschauen/StarTreck/Voyager/2004-01-03_1700_Star_Trek_-_Raumschiff_Voyager_-_Nacht_1655-70m.keep.ldivx1800-2p.avi
STREAM: Description: File
STREAM: Author: Albeu
STREAM: Comment: based on the code from ??? (probably Arpi)
AVI file format detected.
list_end=0x146
======= AVI Header =======
us/frame: 40000  (fps=25,000)
max bytes/sec: 0
padding: 0
MainAVIHeader.dwFlags: (2320) HAS_INDEX IS_INTERLEAVED TRUST_CKTYPE
frames  total: 104416   initial: 0
streams: 2
Suggested BufferSize: 0
Size:  720 x 576
==========================
list_end=0xD4
==> Found video stream: 0
====== STREAM Header =====
Type: vids   FCC:  (0)
Flags: 0
Priority: 0   Language: 0
InitialFrames: 0
Rate: 250000/10000 = 25,000
Start: 0   Len: 104416
Suggested BufferSize: 100340
Quality 0
Sample size: 0
==========================
found 'bih', 40 bytes of 40
======= VIDEO Format ======
  biSize 40
  biWidth 720
  biHeight 576
  biPlanes 1
  biBitCount 24
  biCompression 1482049860='DIVX'
  biSizeImage 1244160
===========================
Regenerating keyframe table for DIVX 4 video
list_end=0x146
==> Found audio stream: 1
====== STREAM Header =====
Type: auds   FCC:  (0)
Flags: 0
Priority: 0   Language: 0
InitialFrames: 0
Rate: 20000/1 = 20000,000
Start: 0   Len: 83543040
Suggested BufferSize: 480
Quality 0
Sample size: 1
==========================
found 'wf', 30 bytes of 18
======= WAVE Format =======
Format Tag: 85 (0x55)
Channels: 2
Samplerate: 48000
avg byte/sec: 20000
Block align: 1
bits/sample: 0
cbSize: 12
mp3.wID=1
mp3.fdwFlags=0x2
mp3.nBlockSize=480
mp3.nFramesPerBlock=1
mp3.nCodecDelay=0
===========================
list_end=0x170
hdr=Software  size=21
Software  : MEncoder 1.0pre3-3.3
Broken chunk?  chunksize=1672  (id=JUNK)
list_end=0x3D2DFBAA
Found movie at 0x80C - 0x3D2DFBAA
Reading INDEX block, 278464 chunks for 104416 frames (fpos=0x3d2dfbb2)
AVI index offset: 0x808 (movi=0x80C idx0=0x4 idx1=0x1EC)
Auto-selected AVI audio ID = 1
Auto-selected AVI video ID = 0
AVI: Searching for audio stream (id:1)
AVI video size=940598624 (104416) audio size=83543040 (83543040)
VIDEO:  [DIVX]  720x576  24bpp  25,000 fps  1801,6 kbps (219,9 kbyte/s)
[V] filefmt:3  fourcc:0x58564944  size:720x576  fps:25,00  ftime:=0,0400
Clip info:
 Software: MEncoder 1.0pre3-3.3
get_path('sub/') -> '/root/.mplayer/sub/'
get_path('default.sub') -> '/root/.mplayer/default.sub'
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer.
mp3lib: made decode tables with MMX optimization
mp3lib: using 3DNow!Ex optimized decore!
MP3lib: init layer2&3 finished, tables done

MPEG 1.0, Layer III, 48000 Hz 160 kbit Joint-Stereo, BPF: 480
Channels: 2, copyright: No, original: Yes, CRC: No, emphasis: 0
AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 20000->192000 (160,0 kbit)
Selected audio codec: [mp3] afm:mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
Opening /dev/dvb/adapter0/video0+audio0
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
INFO: libavcodec init OK!
Selected video codec: [ffodivx] vfm:ffmpeg (FFmpeg MPEG-4)
==========================================================================
Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...
[libaf] Adding filter dummy
[dummy] Was reinitialized, rate=48000Hz, nch = 2, format = 0x00000001 
and bps = 2
AF_pre: af format: 2 bps, 2 ch, 48000 hz, little endian signed int
AF_pre: 48000Hz 2ch Signed 16-bit (Little-Endian)
AO: [null] 48000Hz 2ch Signed 16-bit (Little-Endian) (2 bps)
AO: Description: Null audio output
AO: Author: Tobias Diedrich
Building audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/2ch/16bit...
[dummy] Was reinitialized, rate=48000Hz, nch = 2, format = 0x00000001 
and bps = 2
[dummy] Was reinitialized, rate=48000Hz, nch = 2, format = 0x00000001 
and bps = 2
Starting playback...
XXX initial  v_pts=0,000  a_pos=10080 (0,504)
[ffmpeg] aspect_ratio: 1,250000
VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
Trying filter chain: vo
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
SwScale params: -1 x -1 (-1=no scaling)
Trying filter chain: scale vo
Opening video filter: [lavc]
Trying filter chain: lavc vo
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1,25:1 - prescaling to correct movie aspect.
VO Config (720x576->720x576,flags=0,'MPlayer',0x32315659)
REQ: flags=0x103  req=0x0 
VO: [mpegpes] 720x576 => 720x576 Mpeg PES
VO: Description: Mpeg-PES to DVB card
VO: Author: A'rpi
*** [lavc] Allocating mp_image_t, 720x576x12bpp YUV planar, 622080 bytes
*** [vo] Exporting mp_image_t, 720x576x0bpp RGB packed, 0 bytes
*** [lavc] Allocating mp_image_t, 720x576x12bpp YUV planar, 622080 bytes
Uninit audio filters...
[libaf] Removing filter dummy
uninit audio: mp3lib
uninit video: ffmpeg
DEMUXER: freeing demuxer at 0x86010a8 
vo: x11 uninit called but X11 not inited..

Exiting... (Quit)