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Old 09-13-2011, 12:08 AM
Kaushal Shriyan
Default sox: Failed reading obd-demo.mp3: Do not understand format type: mp3


Can someone please comment about the below issue

[root@host0040 kaushal]# file obd-demo.mp3
obd-demo.mp3: MPEG ADTS, layer III, v1, 256 kBits, 44.1 kHz, Monaural
[root@host0040 kaushal]# sox obd-demo.mp3 -e stat
sox: Failed reading obd-demo.mp3: Do not understand format type: mp3

[root@host0040 kaushal]# sox -V obd-demo.mp3 -r 8000 -c 1 -t ul -w vm-intro.ulaw
sox: Failed reading obd-demo.mp3: Do not understand format type: mp3

[root@host0040 kaushal]# sox -v 0.125 -V <obd-demo.mp3> -t au -r 8000
-U -b -c 1 <obd-demo.ulaw> resample -ql
-bash: obd-demo.ulaw: No such file or directory
[root@host0040 kaushal]# sox -V obd-demo.mp3 -t au -r 8000 -U -b -c 1
obd-demo.ulaw resample -ql
sox: Failed reading obd-demo.mp3: Do not understand foReply
rmat type: mp3

[root@host0040 kaushal]#

When i invoke the same obd-demo.mp3 it works perfectly fine

host0040*CLI> channel originate DAHDI/g0/xxxxxxxxxx Application
MP3Player /home/kaushal/obd-demo.mp3
[Sep 9 16:44:56] DEBUG[12691]: sig_pri.c:985 sig_pri_request: sig_pri_request 1
[Sep 9 16:44:56] DEBUG[12691]: sig_pri.c:6427 sig_pri_call: CALLER NAME: NUM:
-- Requested transfer capability: 0x00 - SPEECH
-- Launching MP3Player(/home/kaushal/obd-demo.mp3) on DAHDI/i1/9833754756-1

[root@host0040 ~]# rpm -qa | grep sox
[root@host0040 ~]# rpm -qa | grep lame
[root@host0040 ~]#

MP3 support in SoX is optional
and requires access to either or both the external
libmad and libmp3lame libraries. To see if there is support for Mp3
run sox -h and
look for it under the list of supported file formats as "mp3".

[root@host0040 ~]# sox -h
sox: Version 12.18.1

Usage: [ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ]

gopts: -e -h -p -q -S -V

fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -v volume -x

effect: avg band bandpass bandreject chorus compand copy dcshift
deemph earwax echo echos fade filter flanger highp highpass lowp
lowpass mask mcompand noiseprof noisered pan phaser pick pitch
polyphase rate repeat resample reverb reverse silence speed stat
stretch swap synth trim vibro vol

effopts: depends on effect

Supported file formats: aiff al alsa au auto avr cdr cvs dat vms gsm
hcom la lu maud nul ossdsp prc raw sb sf sl smp sndt sph 8svx sw txw
ub ul uw voc vorbis vox wav wve

Which package contains libmad and libmp3lame libraries available on CentOS 5.6


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