[MPlayer-users] Finding the peak level in an audio track

[Richard Bromley]

Sorry to bother.

I tried running the following on lfe.wav, a mono PCM file.

$ mplayer -af volume -ao pcm:fast:file=/dev/null lfe.wav
MPlayer 1.0rc1-4.1.1 (C) 2000-2006 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 4, Stepping: 3)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Playing lfe.wav.
Cache fill:  2.93% (245760 bytes)
Audio file file format detected.
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 1 ch, s16le, 768.0 kbit/100.00% (ratio: 96000->96000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO PCM] File: /dev/null (WAVE)
PCM: Samplerate: 48000Hz Channels: Mono Format s16le
[AO PCM] Info: Faster dumping is achieved with -vc null -vo null -ao pcm:fast
[AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default).
AO: [pcm] 48000Hz 1ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A:6765.8 ( 1:52:45.7) of 6765.0 ( 1:52:45.0)  0.1% 0%

Exiting... (End of file)


Although the man page states that the volume filter prints out the
maximum sound level, it doesn't.

Also, is there a better way to tell mplayer to play the file at maximum speed?

Thanks for your time.