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Date: Thu, 8 Jun 2006 21:07:34 +0700
From: Balabay S Sergey <johnny3000k@yandex.ru>
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Subject: [Comm] MPlayer audioquality bug
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Всем  доброго  времени  суток!
Столкнулся  с  такой  проблемой,  причем  весьма  давно: в большинстве
клипов  и  в  некоторых  фильмах (довольно старых в плане выпуска CD с
ними)  звук  получается какой-то квакающий, будто залитый водой. Нашёл
два  клипа,  один  играет  нормально, второй - квакает.
Посмотрел под виндой - аудиопотоки отличаются только цифрой в описании
кодека:
Квакает: 0x0050 (Microsoft MPEG-1 layer 1, 2)
Нормально: 0x0055 (ISO MPEG-1 Layer3)
Как можно пофиксить?? Ведь по сути всё равно MP3-кодек используется.

Логи mplayer'а (оставил всё, что касалось audio):
Нормально:
MPlayer 1.0pre5-3.3.3 (C) 2000-2004 MPlayer Team
Playing Papa Roach - Last Resort.avi.
Checking audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/32bit...
AF_pre: af format: 4 bps, 2 ch, 44100 hz, little endian float 
AF_pre: 44100Hz 2ch Floating Point
alsa-init: got device=0, subdevice=0
alsa-init: 1 soundcard found, using: default
alsa: 44100 Hz/2 channels/8 bpf/131072 bytes buffer/Signed 32 bit Big Endian
AO: [alsa] 44100Hz 2ch Signed 32-bit (Big-Endian) (4 bps)
Building audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/32bit...
Starting playback...
A:   0,1 V:   0,0 A-V:  0,029 ct:  0,003    2/  2   0%  0%  0,0% 0 0 0%
Successfully enabled DPMS
alsa-uninit: pcm closed
Exiting... (Quit)

Квакает:
MPlayer 1.0pre5-3.3.3 (C) 2000-2004 MPlayer Team
Playing /windows/c/Unsort/Madonna-Hung Up.mpg.
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
MP3lib: init layer2&3 finished, tables done
AUDIO: 44100 Hz, 2 ch, 16 bit (0x10), ratio: 24000->176400 (192,0 kbit)
Selected audio codec: [mp3] afm:mp3lib (mp3lib MPEG layer-2, layer-3)
Checking audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/32bit...
AF_pre: af format: 4 bps, 2 ch, 44100 hz, little endian float 
AF_pre: 44100Hz 2ch Floating Point
alsa-init: got device=0, subdevice=0
alsa-init: 1 soundcard found, using: default
alsa: 44100 Hz/2 channels/8 bpf/131072 bytes buffer/Signed 32 bit Big Endian
AO: [alsa] 44100Hz 2ch Signed 32-bit (Big-Endian) (4 bps)
Building audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/32bit...
Starting playback...
Successfully enabled DPMS
alsa-uninit: pcm closed
Exiting... (Quit)
===Конец логов===

+---------------------+---------------+
|WBR, Balabay S Sergey|ICQ:  175140263|
|johnny3000k@yandex.ru|  Linux 2.6.7  |
+---------------------+---------------+