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Audio Processing Tool Command Line To Extract Play Length?

Does any know of a command line tool to extract the play length of many different audio file formats? I have tried sox, using the following command.

sox a2.wav -n stat

But it does not support the following formats.

.acc, wma

I thought mplayer might be able to do it but I am unsure and can't find how this might be done.

Thanks

mplayer does play the multimedia files well through command-line, but I doubt it could be used to just extract & display the media information of a file (metadata).

Have you check for whether sox's media support could be extended using some plugins or something?

this will show you the length in seconds of any media file

Code:

mplayer -vo null -ao null -frames 0 -identify yourmediafile 2>/dev/null | grep ID_LENGTH | awk -F= '{print $2}'

anurag_bhd, the closes I can get to this is to install this package "libsox-fmt-all". After reading http://sox.sourceforge.net/soxformat.html it seems like the files format are not supported. If there is another way to "extended using some plugins" I am not sure.

almatic, wow thanks that was amazing and what I thought was possible.

Thanks, much

almatic, I receive this as the output for my .aac file. The "ID_LENGTH" is not true it is longer than zero seconds. Any other tools or ideas how I might retrieve the play duration?

Code:

MPlayer dev-SVN-r26940

CPU: Intel(R) Xeon(TM) CPU 3.06GHz (Family: 15, Model: 2, Stepping: 7)

CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1

Compiled with runtime CPU detection.



Playing Back To Basics  Modern - 01 Intro (Back To Basics).aac.

ID_VIDEO_ID=0

libavformat file format detected.

AAC file format detected.

ID_AUDIO_ID=0

ID_FILENAME=Back To Basics  Modern - 01 Intro (Back To Basics).aac

ID_DEMUXER=aac

ID_AUDIO_FORMAT=MP4A

ID_AUDIO_BITRATE=0

ID_AUDIO_RATE=0

ID_AUDIO_NCH=0

ID_LENGTH=0.00

ID_SEEKABLE=1

==========================================================================

Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)

AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)

ID_AUDIO_BITRATE=128000

ID_AUDIO_RATE=44100

ID_AUDIO_NCH=2

Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)

==========================================================================

AO: [null] 44100Hz 2ch s16le (2 bytes per sample)

ID_AUDIO_CODEC=faad

Video: no video

Starting playback...





Exiting... (End of file)

[Edit]
I can use faad but I was looking for magical bullet from mplayer. Thanks for all the help.

faad -i Back\ To\ Basics\ \ Modern\ -\ 01\ Intro\ $Back\ To\ Basics$.aac 2>&1 | grep ADTS | awk '{print int($2)}'