[#4108] mplayer cannot play mp3 smoothly
Submitted By: Yi Li
Open Date
2008-05-16 05:01:39
Priority:
Low Assignee:
Nobody
Status:
Open Fixed In Release:
N/A
Found In Release:
N/A Release:
trunk
Category:
N/A Board:
STAMP
Processor:
BF537 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
N/A
Uboot version or rev.:
Toolchain version or rev.:
App binary format:
N/A
Summary: mplayer cannot play mp3 smoothly
Details:
uclinux-dist: Revision: 6686
linux-kernel: Revision: 4747
BF537-STAMP, ad1836
mplayer cannot play a mp3 file smoothly, there are jitters every several seconds. However, mp3play works well. So I am thinking this is a mplayer problem. Hope this issue is reproducible.
root:/> lsmod
Module Size Used by
snd_pcm_oss 30400 0
snd_mixer_oss 11168 1 snd_pcm_oss
snd_ad1836 16136 0
snd_pcm 49028 2 snd_pcm_oss,snd_ad1836
snd_timer 13764 1 snd_pcm
snd_page_alloc 4072 1 snd_pcm
snd 31572 5 snd_pcm_oss,snd_mixer_oss,snd_ad1836,snd_pcm,snr
soundcore 3908 1 snd
root:/> mplayer -ao help
MPlayer dev-SVN-r6686-4.1.2 (C) 2000-2007 MPlayer Team
Available audio output drivers:
oss OSS/ioctl audio output
mpegpes DVB audio output
v4l2 V4L2 MPEG Audio Decoder output
null Null audio output
pcm RAW PCM/WAVE file writer audio output
117 audio & 238 video codecs
root:/> mplayer test.mp3
MPlayer dev-SVN-r6686-4.1.2 (C) 2000-2007 MPlayer Team
117 audio & 238 video codecs
Playing test.mp3.
Audio file file format detected.
Clip info:
Title: It's All Over Now, Baby Blue
Artist: Joan Baez
Album: Baez Sings Dylan
Year: 1998
Comment:
Track: 2
Genre: Folk
==========================================================================
Opening audio decoder: [libmad] libmad mpeg audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 256.0 kbit/18.14% (ratio: 32000->176400)
Selected audio codec: [mad] afm: libmad (libMAD MPEG layer 1-2-3)
==========================================================================
AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 9.0 (08.9) of 208.0 (03:28.0) 1.4%
MPlayer interrupted by signal 2 in module: play_audio
root:/>
root:/> mp3play -v -P test.mp3
test.mp3:
MPEG1-III stereo 256kbps 44100Hz (208394 ms)
Decoding: Channels=2 Quality=2 Frequency=44100Hz
Title: It's All Over Now, Baby Blue
Artist: Joan Baez
Album: Baez Sings Dylan
Year: 1998
Comments:
Genre: Folk
Follow-ups
--- Mike Frysinger 2008-05-16 09:49:33
mp3play does not use libmad ... it uses its own internal mp3 decoding routines
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