[Mplayer-users] audio from DVDs quiet

[Nicholas J Kreucher]

hello. MPlayer is great.

one thing to report: audio volume from DVDs is rather quiet. seems consistent with any DVD i try.

very odd to me. audio volume of most other (maybe all?) .mpeg and .avi files is considerably higher. to watch a movie i have to turn my master volume to 100% and pcm volume to 80% and higher. at this level all other system sounds (ex mp3s from xmms and the "bring" in gaim) are very very loud. i have been getting around this problem by making sure nothing else will be playing sounds while i watch DVDs. however, it would be nice if DVDs were at a more normal volume level. also it is a tad annoying because when turned way up, my sound card emits a slight buzzing sound, where as with mp3 and such i don't have to turn it way up and don't hear the buzz.

i have ALSA sound setup. have tried with and w/o -ao alsa5 and also tried w/o ALSA and just plain OSS driver for my card: no change.

any thoughts?  i've tried the CVS version. also i checked the source and read a little bit about ac3 audio. experimented with the dialnorm variable in libac3/parse.c with no luck. is there a global "audio gain" variable that could be a command line switch perhaps?

thanks!

	- Nicholas J Kreucher

-- Software --------
RedHat 7.1
kernel 2.4.6 (also tried rh7.1's 2.4.2-2)
libc-2.2.2.so
XFree86 Version 4.0.3
gcc version 3.0
GNU ld version 2.10.91 (with BFD 2.10.91.0.2)
GNU assembler 2.10.91

-- Hardware --------
AMD Athlon(tm) Processor 1.2 GHz
nVidia GeForce 2 MX [nVidia Corporation NV11 (rev a1)]
NVIDIA_GLX-1.0-1251 (with mtrr working)
Trident Microsystems 4DWave NX with ALSA 0.5.11

-- mplayer -v ... output --------
MPlayer 0.18pre5(C) 2000-2001 Arpad Gereoffy <arpi at thot.banki.hu>

CommandLine: '-v' '-dvdauth' '/dev/dvd' '-ao' 'alsa5' '/mnt/cdrom/video_ts/vts_01_1.vob'
Reading /home/nick/.mplayer/codecs.conf: 15 audio & 32 video codecs
font: can't open file: /home/nick/.mplayer/font/font.desc
DVD is encrypted, issuing authentication ...
LBA: 14738
DVD title key is: E169102898
DVD auth sequence seems to be OK.
ASF_check: not ASF guid!
system stream synced at 0xD (13)!
  {ERROR5,c=0}  
==> Found video stream: 0
Detected MPEG-PS file format!
==> Found subtitle: 3
==> Found subtitle: 2
==> Found subtitle: 1
==> Found subtitle: 0
==> Found audio stream: 128
detected MPG-PS audio format: 3
Searching for sequence header... OK!
mpeg2dec-0.2.0-release (C) 2000-2001 Aaron Holtzman & Michel Lespinasse
libmpeg2: Using MMX for IDCT transform
libmpeg2: Using 3DNOW for motion compensation
mpeg bitrate: 17500 (445C)
VIDEO:  MPEG2  720x480  (aspect 3)  29.97 fps  8750.0 kbps (1093.8 kbyte/s)
[V] filefmt:2  fourcc:0x10000001  size:720x480  fps:29.97  ftime:=0.0334
Detected audio codec: [ac3] drv:3 (AC3)
Initializing audio codec...
dec_audio: Allocating 6144 + 65536 = 71680 bytes for output buffer
!! libac3 (core v0.6.2) : using 3dNow-dsp! optimization
5.1 Mode 48.0 KHz 384 kbps Complete Main Audio Service
AUDIO: srate=48000  chans=2  bps=2  sfmt=0x10  ratio: 48000->192000
Detected video codec: [mpeg12] drv:1 (MPEG 1 or 2)
vo_debug: query(Planar YV12) returned 0x1
vo_debug1: out_fmt=Planar YV12
vo_debug2: out_fmt=Planar YV12
VO: [xv] 720x480 => 720x480 Planar YV12 
VO: Description: X11/Xv
VO: Author: Gerd Knorr <kraxel at goldbach.in-berlin.de>
video_out->init(720x480->720x480,flags=0,'MPlayer',0x32315659)
vo_debug3: out_fmt=Planar YV12
vo: X11 color mask:  FFFF  (R:F800 G:7E0 B:1F)
vo: X11 running at 1024x768 depth: 16 (":0.0" => local display)
Xvideo image format: 0x32595559 (YUY2) packed
Xvideo image format: 0x32315659 (YV12) planar
Xvideo image format: 0x59565955 (UYVY) packed
Xvideo image format: 0x30323449 (I420) planar
using Xvideo port 49 for hw scaling
[xv] dcx: 0 dcy: 0 dx: 0 dy: 0 dw: 720 dh: 480
INFO: Video OUT driver init OK!
Setting up lirc support...
LIRC init was successful.
AO: [alsa5] 48000Hz Stereo Signed 16-bit (Little-Endian)
AO: Description: ALSA-0.5.x audio output
AO: Author: Alex Beregszaszi <alex at naxine.org>
alsa-init: requested format: 48000 Hz, 2 channels, Signed 16-bit (Little-Endian)
alsa-init: compiled for ALSA-0.5.10b (1290)
alsa-init: 1 soundcard found, using: Trident 4DWave
alsa-init: setting preferred buffer size from driver: 131072 bytes
AUDIO: 48000 Hz/2 channels/192000 bps/131072 bytes buffer/Signed 16-bit Little Endian
Start playing...
==> Found audio stream: 131
==> Found audio stream: 130
==> Found audio stream: 129
[xv] dcx: 1 dcy: 22 dx: 0 dy: 0 dw: 720 dh: 480
  {ERROR5,c=0}  
A:   0.8 (   0.2)  V:   0.2  A-V:  0.084 ct:  0.000    3   0%  0%  0.0% 0
A:   1.0 (   0.3)  V:   0.2  A-V:  0.051 ct:  0.003    4   0%  0%  0.0% 0
A:   1.0 (   0.3)  V:   0.3  A-V:  0.064 ct:  0.007    5   0%  0%  0.0% 0
A:   1.0 (   0.4)  V:   0.3  A-V:  0.028 ct:  0.009    6   0%  0%  0.0% 0
A:   1.1 (   0.4)  V:   0.3  A-V:  0.067 ct:  0.013    7   0%  0%  0.0% 0      {ERROR5,c=0} 
A:   1.1 (   0.4)  V:   0.4  A-V:  0.073 ct:  0.016    9   0%  0%  0.0% 0
A:   1.1 (   0.5)  V:   0.4  A-V:  0.041 ct:  0.019   10   0%  0%  0.0% 0
. . .
frame drop 0, -0.63
A:   7.9 (   7.9)  V:   7.2  A-V:  0.007 ct:  0.035  213  12%  0% 28.9% 1
Exiting... (Quit)
max framesize was 70600 bytes
Cleaning up lirc stuff.


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