[Mplayer-users] Audio problem: it has 'wheezing' artifacts

Alex Kanavin ak at cave.hop.stu.neva.ru
Mon Jun 4 13:40:58 CEST 2001


My system is Celeron-266, S3 Virge/DX 2 MB, Red Hat 7.1, XFree 4.0.3.
dmesg says the following about the soundcard:

Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996
sb: Creative ViBRA16X PnP detected
sb: ISAPnP reports 'Creative ViBRA16X PnP' at i/o 0x220, irq 5, dma 1, 3
SB 4.16 detected OK (220)
SB16: Bad or missing 16 bit DMA channel
sb: 1 Soundblaster PnP card(s) found.

While playing mpeg-1 files from the harddrive or VideoCDs, the sound is,
well, hoarse. Don't know how to describe it exactly. If you've tried to
play an audio file on PC speaker with interrupts turned on, it's quite
like that.

-noalsa, -framedrop, -hardframedrop, -abs 1000000, hdparm -u 1, setting up
mtrr, playing via x11 driver all don't help. -vo null does help however,
but that's not a solution. :) The video card is fast enough and the sound
card is ok I think, because mtvp, smpeg, and windows media player all play
the same files and discs without a hitch. Might be a problem with mplayer.
Here's what it says:

[ak at cave ak]$ mplayer/main/mplayer -vcd 1

MPlayer 0.17cvs-010530-03:08  (C) 2000-2001 Arpad Gereoffy
<arpi at thot.banki.hu>

Reading config file: /etc/mplayer.conf: No such file or directory
Reading config file: /home/ak/.mplayer/config
Reading /home/ak/.mplayer/codecs.conf: 15 audio & 28 video codecs
font: can't open file: /home/ak/.mplayer/font/font.desc
track 01:  adr=1  ctrl=4  format=2  00:02:00  mode: 0
track 02:  adr=1  ctrl=4  format=2  00:34:02  mode: 0
==> Found audio stream: 0
==> Found video stream: 0
Detected MPEG-PS file format!
mpeg2dec-0.2.0-release (C) 2000-2001 Aaron Holtzman & Michel Lespinasse
Using MMX for IDCT transform
Using MMX for motion compensation
VIDEO:  MPEG1  352x288  (aspect 8)  25.00 fps  1439.5 kbps (179.9 kbyte/s)
[V] filefmt:2  fourcc:0x10000001  size:352x288  fps:25.00  ftime:=0.0400
Found audio codec: [mp3] drv:1 (MPEG layer-2, layer-3)
dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer
mp3lib: Processor ID: 650
mp3lib: i586 processor detected.
AUDIO: srate=44100  chans=2  bps=2  sfmt=0x10  ratio: 28000->176400
Found video codec: [mpeg12] drv:1 (MPEG 1 or 2)
VO: [xv] 352x288 => 352x288  YV12
Xvideo image format: 0x32595559 (YUY2) packed
Xvideo image format: 0x32315659 (YV12) planar
Xvideo image format: 0x30323449 (I420) planar
using Xvideo port 43 for hw scaling
[xv] dcx: 0 dcy: 0 dx: 0 dy: 0 dw: 352 dh: 288
Disabling DPMS
stat: 1
audio_setup: sample format: 0x10  (requested: 0x10)
audio_setup: using 44100 Hz samplerate (requested: 44100)
audio_setup: frags:  16/16  (4096 bytes/frag)  free:  65536
Audio buffer size: 65536 bytes, delay: 0.372s
Start playing...
[xv] dcx: 1 dcy: 23 dx: 0 dy: 0 dw: 352 dh: 288
A:   3.4 (   3.0)  V:   4.4  A-V: -1.271 ct: -0.224   58  19%  0% 4.9% 0
Exiting... (Quit)
Successfully enabled DPMS


Homepage: http://www.sensi.org/~ak/

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