rdx /var/xitrophone/billing/voicemessages # avconv -i "concat:330011400173738_0.wav|330011400173738_1.wav" -c copy out.wav
avconv version 0.8.10-6:0.8.10-1, Copyright (c) 2000-2013 the Libav developers
built on Feb 5 2014 03:52:19 with gcc 4.7.2
[wav @ 0x1c54b20] max_analyze_duration reached
Input #0, wav, from 'concat:330011400173738_0.wav|330011400173738_1.wav':
Duration: 00:00:07.27, bitrate: 224 kb/s
Stream #0.0: Audio: pcm_s16le, 8000 Hz, 1 channels, s16, 128 kb/s
Output #0, wav, to 'out.wav':
Metadata:
encoder : Lavf53.21.1
Stream #0.0: Audio: pcm_s16le, 8000 Hz, 1 channels, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press ctrl-c to stop encoding
size= 114kB time=7.27 bitrate= 128.1kbits/s
video:0kB audio:114kB global headers:0kB muxing overhead 0.039542%
rdx /var/xitrophone/billing/voicemessages # du -sh *
120K 330011400173738_0.wav
92K 330011400173738_1.wav
120K out.wav
rdx /var/xitrophone/billing/voicemessages # md5sum 330011400173738_0.wav out.wav
dfd05f4fe98b6c43a18bbe6a8319e671 330011400173738_0.wav
dfd05f4fe98b6c43a18bbe6a8319e671 out.wav
чяднт?