[MPlayer-users] MPEG-1 audio decoding; sounds bad.

Richard Thrippleton ret28 at cam.ac.uk
Wed Jan 16 13:41:01 CET 2002


	On various mpeg-1 movies I've tried playing with the latest version
(0.60, cvs build didn't compile last time I checked), the audio has come out
like it should, but with an annoying and very loud whine in the background.
I suspect this is a decoding rather than a sound card driver problem, as I
get exactly the same problems with both sdl and oss sound output. I've
attached output as appropriate. Running Linux 2.2.20 on a PPC.
	Thanks in advance for any help to be offered.

Richard
-- 
My .sig blatant plug
http://www.srcf.ucam.org/~ret28
-------------- next part --------------


MPlayer 0.60-2.95.2 (C) 2000-2002 Arpad Gereoffy (see DOCS!)

Reading /home/rt/.mplayer/codecs.conf: can't open '/home/rt/.mplayer/codecs.conf': No such file or directory
Reading /usr/local/mplayer/codecs.conf: 26 audio & 70 video codecs
CommandLine: '-ao' 'oss' '-v' '/tmp/thematrix.mpg'
num_filenames: 1
get_path('font/font.desc') -> '/home/rt/.mplayer/font/font.desc'
font: can't open file: /home/rt/.mplayer/font/font.desc
font: can't open file: /usr/local/mplayer/font/font.desc
Using usleep() timing
Playing /tmp/thematrix.mpg
get_path('sub/') -> '/home/rt/.mplayer/sub/'
Not an URL!
File size is 30953472 bytes
Checking for YUV4MPEG2
ASF_check: not ASF guid!
Checking for NuppelVideo
Checking for MOV
Checking for VIVO
header block 1 size: 0
Checking for REAL
system stream synced at 0xB (11)!
==> Found audio stream: 0
==> Found video stream: 0
Detected MPEG-PS file format!
Searching for sequence header... OK!
VIDEO:  MPEG1  320x152  (aspect 1)  23.98 fps  250.0 kbps (31.2 kbyte/s)
[V] filefmt:2  fourcc:0x10000001  size:320x152  fps:23.98  ftime:=0.0417
Detected audio codec: [mp3] drv:1 (MPEG layer-2, layer-3)
Initializing audio codec...
dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer
mp3lib: Using generic decore.
AUDIO: srate=48000  chans=2  bps=2  sfmt=0x20  ratio: 8000->192000
Detected video codec: [mpeg12] drv:1 prio:0 (MPEG 1 or 2)
vo: X11 color mask:  7FFF  (R:7C00 G:3E0 B:1F)
vo: X11 running at 1024x768 with depth 15 and 15 bits/pixel (":0.0" => local display)
mpeg2dec-0.2.0-release (C) 2000-2001 Aaron Holtzman & Michel Lespinasse
libmpeg2: No accelerated IDCT transform found
libmpeg2: No accelerated motion compensation found
Movie-Aspect is undefined - no prescaling applied.
VO: [x11] 320x152 => 320x152 Planar YV12 
VO: Description: X11 ( XImage/Shm )
VO: Author: Aaron Holtzman <aholtzma at ess.engr.uvic.ca>
video_out->init(320x152->320x152,flags=0,'MPlayer',0x32315659)
Sharing memory.
No accelerated colorspace conversion found
INFO: Video OUT driver init OK!
AO: [oss] 48000Hz Stereo Signed 16-bit (Big-Endian)
AO: Description: OSS/ioctl audio output
AO: Author: A'rpi
ao2: 48000 Hz  2 chans  Signed 16-bit (Big-Endian)
audio_setup: using '/dev/dsp' dsp device
audio_setup: sample format: Signed 16-bit (Big-Endian) (requested: Signed 16-bit (Big-Endian))
audio_setup: using 2 channels (requested: 2)
audio_setup: using 48000 Hz samplerate (requested: 48000)
audio_setup: frags:   4/4  (32768 bytes/frag)  free: 131072
Start playing...
A:  -0.0 V:   0.0 A-V: -0.053 ct:  0.000    1/  1   0%  0%  0.0% 0 0 0%
A:   0.2 V:   0.1 A-V:  0.086 ct:  0.004    2/  2   0%  0%  0.0% 1 0 0%
A:   0.3 V:   0.1 A-V:  0.200 ct:  0.008    3/  3   0%  0%  0.0% 2 0 0%
A:   0.5 V:   0.2 A-V:  0.338 ct:  0.013    4/  4   0%  0%  0.0% 3 0 0%
A:   0.7 V:   0.2 A-V:  0.467 ct:  0.017    5/  5   0%  0%  0.0% 4 0 0%
A:   0.8 V:   0.3 A-V:  0.582 ct:  0.021    6/  6   0%  0%  0.0% 5 0 0%
A:   1.0 V:   0.3 A-V:  0.720 ct:  0.025    7/  7   0%  0%  0.0% 6 0 0%
A:   1.2 V:   0.3 A-V:  0.849 ct:  0.029    8/  8   0%  0%  0.0% 7 0 0%
A:   1.4 V:   0.4 A-V:  0.987 ct:  0.033    9/  9   0%  0%  0.0% 8 0 0%
A:   1.5 V:   0.4 A-V:  1.102 ct:  0.038   10/ 10   0%  0%  0.0% 9 0 0%
A:   1.7 V:   0.5 A-V:  1.231 ct:  0.042   11/ 11   0%  0%  0.0% 10 0 0%
A:   1.9 V:   0.5 A-V:  1.369 ct:  0.046   12/ 12   7%  5% 16.6% 11 0 0%
A:   2.0 V:   0.5 A-V:  1.483 ct:  0.050   13/ 13   8%  4% 16.4% 12 0 0%
A:   2.2 V:   0.6 A-V:  1.612 ct:  0.054   14/ 14   8%  4% 16.2% 13 0 0%
A:   2.4 V:   0.6 A-V:  1.751 ct:  0.058   15/ 15   8%  4% 16.1% 14 0 0%
A:   2.6 V:   0.7 A-V:  1.889 ct:  0.063   16/ 16   8%  5% 16.0% 15 0 0%
A:   2.7 V:   0.7 A-V:  2.018 ct:  0.067   17/ 17   8%  6% 16.0% 16 0 0%
A:   2.9 V:   0.8 A-V:  2.132 ct:  0.071   18/ 18   8%  6% 15.9% 17 0 0%
A:   3.1 V:   0.8 A-V:  2.271 ct:  0.075   19/ 19   8%  6% 15.8% 18 0 0%
A:   3.2 V:   0.8 A-V:  2.399 ct:  0.079   20/ 20   8%  7% 15.7% 19 0 0%
A:   3.4 V:   0.9 A-V:  2.538 ct:  0.083   21/ 21   8%  7% 15.6% 20 0 0%
A:   3.6 V:   0.9 A-V:  2.652 ct:  0.088   22/ 22   7%  7% 15.6% 21 0 0%
A:   3.7 V:   1.0 A-V:  2.781 ct:  0.092   23/ 23   7%  7% 15.5% 22 0 0%
A:   3.9 V:   1.0 A-V:  2.919 ct:  0.096   24/ 24   7%  8% 15.5% 23 0 0%
A:   4.1 V:   1.0 A-V:  3.034 ct:  0.100   25/ 25   8%  8% 15.4% 24 0 0%
A:   4.2 V:   1.1 A-V:  3.163 ct:  0.104   26/ 26   8%  8% 15.4% 25 0 0%
A:   4.4 V:   1.1 A-V:  3.301 ct:  0.108   27/ 27   8%  8% 15.4% 26 0 0%
A:   4.6 V:   1.2 A-V:  3.439 ct:  0.113   28/ 28   8%  8% 15.3% 27 0 0%
A:   4.8 V:   1.2 A-V:  3.568 ct:  0.117   29/ 29   8%  8% 15.3% 28 0 0%
A:   4.9 V:   1.3 A-V:  3.683 ct:  0.121   30/ 30   7%  8% 15.3% 29 0 0%
A:   5.1 V:   1.3 A-V:  3.821 ct:  0.125   31/ 31   7%  9% 15.2% 30 0 0%
A:   5.3 V:   1.3 A-V:  3.950 ct:  0.129   32/ 32   7%  9% 15.2% 31 0 0%
A:   5.4 V:   1.4 A-V:  4.064 ct:  0.133   33/ 33   7%  9% 15.1% 32 0 0%
A:   5.6 V:   1.4 A-V:  4.203 ct:  0.138   34/ 34   7%  9% 15.1% 33 0 0%
A:   5.8 V:   1.5 A-V:  4.332 ct:  0.142   35/ 35   7%  9% 15.1% 34 0 0%
A:   6.0 V:   1.5 A-V:  4.470 ct:  0.146   36/ 36   7%  9% 15.1% 35 0 0%
A:   6.1 V:   1.5 A-V:  4.584 ct:  0.150   37/ 37   8%  9% 15.1% 36 0 0%
A:   6.3 V:   1.6 A-V:  4.713 ct:  0.154   38/ 38   8%  9% 15.0% 37 0 0%
A:   6.5 V:   1.6 A-V:  4.852 ct:  0.158   39/ 39   8%  9% 15.0% 38 0 0%
A:   6.6 V:   1.7 A-V:  4.966 ct:  0.163   40/ 40   8%  9% 15.0% 39 0 0%
A:   6.8 V:   1.7 A-V:  5.095 ct:  0.167   41/ 41   8%  9% 15.0% 40 0 0%
A:   7.0 V:   1.8 A-V:  5.233 ct:  0.171   42/ 42   8%  9% 15.0% 41 0 0%
A:   7.2 V:   1.8 A-V:  5.372 ct:  0.175   43/ 43   8%  9% 14.9% 42 0 0%
A:   7.3 V:   1.8 A-V:  5.501 ct:  0.179   44/ 44   8% 10% 15.0% 43 0 0%
A:   7.5 V:   1.9 A-V:  5.615 ct:  0.184   45/ 45   7% 10% 15.0% 44 0 0%
A:   7.7 V:   1.9 A-V:  5.753 ct:  0.188   46/ 46   7% 10% 15.0% 45 0 0%
A:   7.8 V:   2.0 A-V:  5.882 ct:  0.192   47/ 47   7% 10% 15.0% 46 0 0%
A:   8.0 V:   2.0 A-V:  5.998 ct:  0.196   48/ 48   7% 10% 14.9% 47 0 0%
A:   8.2 V:   2.0 A-V:  6.136 ct:  0.200   49/ 49   8% 10% 14.9% 48 0 0%
A:   8.4 V:   2.1 A-V:  6.265 ct:  0.204   50/ 50   8% 10% 14.9% 49 0 0%
A:   8.5 V:   2.1 A-V:  6.404 ct:  0.209   51/ 51   8% 10% 14.9% 50 0 0%
-------------- next part --------------


MPlayer 0.60-2.95.2 (C) 2000-2002 Arpad Gereoffy (see DOCS!)

Reading /home/rt/.mplayer/codecs.conf: can't open '/home/rt/.mplayer/codecs.conf': No such file or directory
Reading /usr/local/mplayer/codecs.conf: 26 audio & 70 video codecs
CommandLine: '-ao' 'sdl' '-v' '/tmp/thematrix.mpg'
num_filenames: 1
get_path('font/font.desc') -> '/home/rt/.mplayer/font/font.desc'
font: can't open file: /home/rt/.mplayer/font/font.desc
font: can't open file: /usr/local/mplayer/font/font.desc
Using usleep() timing
Playing /tmp/thematrix.mpg
get_path('sub/') -> '/home/rt/.mplayer/sub/'
Not an URL!
File size is 30953472 bytes
Checking for YUV4MPEG2
ASF_check: not ASF guid!
Checking for NuppelVideo
Checking for MOV
Checking for VIVO
header block 1 size: 0
Checking for REAL
system stream synced at 0xB (11)!
==> Found audio stream: 0
==> Found video stream: 0
Detected MPEG-PS file format!
Searching for sequence header... OK!
VIDEO:  MPEG1  320x152  (aspect 1)  23.98 fps  250.0 kbps (31.2 kbyte/s)
[V] filefmt:2  fourcc:0x10000001  size:320x152  fps:23.98  ftime:=0.0417
Detected audio codec: [mp3] drv:1 (MPEG layer-2, layer-3)
Initializing audio codec...
dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer
mp3lib: Using generic decore.
AUDIO: srate=48000  chans=2  bps=2  sfmt=0x20  ratio: 8000->192000
Detected video codec: [mpeg12] drv:1 prio:0 (MPEG 1 or 2)
vo: X11 color mask:  7FFF  (R:7C00 G:3E0 B:1F)
vo: X11 running at 1024x768 with depth 15 and 15 bits/pixel (":0.0" => local display)
mpeg2dec-0.2.0-release (C) 2000-2001 Aaron Holtzman & Michel Lespinasse
libmpeg2: No accelerated IDCT transform found
libmpeg2: No accelerated motion compensation found
Movie-Aspect is undefined - no prescaling applied.
VO: [x11] 320x152 => 320x152 Planar YV12 
VO: Description: X11 ( XImage/Shm )
VO: Author: Aaron Holtzman <aholtzma at ess.engr.uvic.ca>
video_out->init(320x152->320x152,flags=0,'MPlayer',0x32315659)
Sharing memory.
No accelerated colorspace conversion found
INFO: Video OUT driver init OK!
AO: [sdl] 48000Hz Stereo Signed 16-bit (Big-Endian)
AO: Description: SDLlib audio output
AO: Author: Felix Buenemann <atmosfear at users.sourceforge.net>
SDL: Samplerate: 48000Hz Channels: Stereo Format Signed 16-bit (Big-Endian)
SDL: buf size = 4096
Start playing...
A:   0.0 V:   0.0 A-V: -0.010 ct:  0.000    1/  1   0%  0%  0.0% 0 0 0%
A:   0.1 V:   0.1 A-V: -0.009 ct: -0.001    2/  2   0%  0%  0.0% 0 0 0%
A:   0.1 V:   0.1 A-V: -0.008 ct: -0.002    3/  3   0%  0%  0.0% 0 0 0%
A:   0.2 V:   0.2 A-V: -0.007 ct: -0.002    4/  4   0%  0%  0.0% 0 0 0%
A:   0.2 V:   0.2 A-V:  0.025 ct:  0.000    5/  5   0%  0%  0.0% 0 0 0%
A:   0.3 V:   0.3 A-V:  0.004 ct:  0.000    6/  6   0%  0%  0.0% 0 0 0%
A:   0.3 V:   0.3 A-V:  0.005 ct:  0.001    7/  7   0%  0%  0.0% 0 0 0%
A:   0.3 V:   0.3 A-V: -0.015 ct: -0.001    8/  8   0%  0%  0.0% 0 0 0%
A:   0.4 V:   0.4 A-V:  0.007 ct:  0.000    9/  9   0%  0%  0.0% 0 0 0%
A:   0.4 V:   0.4 A-V: -0.007 ct: -0.000   10/ 10   0%  0%  0.0% 0 0 0%
A:   0.5 V:   0.5 A-V: -0.006 ct: -0.001   11/ 11   0%  0%  0.0% 0 0 0%
A:   0.5 V:   0.5 A-V: -0.005 ct: -0.001   12/ 12   7% 11%  5.9% 0 0 0%
A:   0.5 V:   0.5 A-V: -0.004 ct: -0.002   13/ 13   8% 11%  5.8% 0 0 0%
A:   0.6 V:   0.6 A-V: -0.024 ct: -0.004   14/ 14   7% 11%  5.7% 0 0 0%
A:   0.6 V:   0.6 A-V: -0.002 ct: -0.004   15/ 15   7% 11%  5.5% 0 0 0%
A:   0.7 V:   0.7 A-V: -0.001 ct: -0.005   16/ 16   7% 11%  5.4% 0 0 0%
A:   0.7 V:   0.7 A-V: -0.012 ct: -0.006   17/ 17   7% 11%  5.3% 0 0 0%
A:   0.8 V:   0.8 A-V:  0.011 ct: -0.005   18/ 18   7% 11%  5.2% 0 0 0%
A:   0.8 V:   0.8 A-V:  0.011 ct: -0.003   19/ 19   7% 11%  5.2% 0 0 0%
A:   0.8 V:   0.8 A-V: -0.009 ct: -0.004   20/ 20   7% 11%  5.1% 0 0 0%
A:   0.9 V:   0.9 A-V:  0.013 ct: -0.003   21/ 21   7% 11%  4.9% 0 0 0%
A:   0.9 V:   0.9 A-V: -0.000 ct: -0.003   22/ 22   7% 11%  5.0% 0 0 0%
A:   0.9 V:   1.0 A-V: -0.021 ct: -0.005   23/ 23   7% 11%  5.0% 0 0 0%
A:   1.0 V:   1.0 A-V:  0.002 ct: -0.005   24/ 24   7% 11%  4.9% 0 0 0%
A:   1.0 V:   1.0 A-V: -0.019 ct: -0.007   25/ 25   7% 11%  4.8% 0 0 0%
A:   1.1 V:   1.1 A-V: -0.018 ct: -0.009   26/ 26   7% 11%  4.7% 0 0 0%
A:   1.1 V:   1.1 A-V: -0.017 ct: -0.010   27/ 27   7% 11%  4.7% 0 0 0%
A:   1.2 V:   1.2 A-V: -0.016 ct: -0.012   28/ 28   7% 10%  4.7% 0 0 0%
A:   1.2 V:   1.2 A-V: -0.006 ct: -0.012   29/ 29   7% 10%  4.6% 0 0 0%
A:   1.3 V:   1.3 A-V:  0.017 ct: -0.011   30/ 30   7% 10%  4.6% 0 0 0%
A:   1.3 V:   1.3 A-V: -0.004 ct: -0.011   31/ 31   7%  9%  4.7% 0 0 0%
A:   1.3 V:   1.3 A-V: -0.003 ct: -0.011   32/ 32   7%  9%  4.6% 0 0 0%
A:   1.4 V:   1.4 A-V: -0.002 ct: -0.012   33/ 33   7%  9%  4.6% 0 0 0%
A:   1.4 V:   1.4 A-V: -0.001 ct: -0.012   34/ 34   7%  8%  4.5% 0 0 0%
A:   1.5 V:   1.5 A-V:  0.010 ct: -0.011   35/ 35   7%  8%  4.5% 0 0 0%
A:   1.5 V:   1.5 A-V:  0.032 ct: -0.007   36/ 36   7%  8%  4.5% 0 0 0%
A:   1.5 V:   1.5 A-V: -0.010 ct: -0.008   37/ 37   7%  8%  4.5% 0 0 0%
A:   1.6 V:   1.6 A-V:  0.012 ct: -0.007   38/ 38   7%  8%  4.4% 0 0 0%
A:   1.6 V:   1.6 A-V:  0.013 ct: -0.006   39/ 39   7%  7%  4.4% 0 0 0%
A:   1.7 V:   1.7 A-V: -0.007 ct: -0.007   40/ 40   7%  7%  4.4% 0 0 0%
A:   1.7 V:   1.7 A-V:  0.001 ct: -0.006   41/ 41   7%  7%  4.4% 0 0 0%
A:   1.8 V:   1.8 A-V:  0.002 ct: -0.006   42/ 42   7%  7%  4.4% 0 0 0%
A:   1.8 V:   1.8 A-V: -0.019 ct: -0.008   43/ 43   7%  7%  4.4% 0 0 0%
A:   1.8 V:   1.8 A-V:  0.004 ct: -0.008   44/ 44   7%  6%  4.3% 0 0 0%
vo: uninit!
SDL: Audio Subsystem shutting down!
*** free_stream() called ***
max framesize was 1196 bytes


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