Array
(
    [0] => ffmpeg version git-2017-04-14-2280255 Copyright (c) 2000-2015 the FFmpeg developers
    [1] =>   built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)
    [2] =>   configuration: --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-nonfree --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-gpl --enable-postproc --extra-libs='"-ldl"' --enable-avfilter --enable-shared
    [3] =>   libavutil      54. 20.100 / 54. 20.100
    [4] =>   libavcodec     56. 26.100 / 56. 26.100
    [5] =>   libavformat    56. 25.101 / 56. 25.101
    [6] =>   libavdevice    56.  4.100 / 56.  4.100
    [7] =>   libavfilter     5. 12.100 /  5. 12.100
    [8] =>   libswscale      3.  1.101 /  3.  1.101
    [9] =>   libswresample   1.  1.100 /  1.  1.100
    [10] =>   libpostproc    53.  3.100 / 53.  3.100
    [11] => [mp3 @ 0x106fd00] Estimating duration from bitrate, this may be inaccurate
    [12] => Input #0, mp3, from 'sample.mp3':
    [13] =>   Duration: 00:02:41.52, start: 0.000000, bitrate: 320 kb/s
    [14] =>     Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
    [15] => Input #1, mp3, from 'sound.mp3':
    [16] =>   Metadata:
    [17] =>     encoder         : Lavf54.63.104
    [18] =>     title           : FemaleOhYes
    [19] =>     artist          : WAV-LIBRARY.NET
    [20] =>     album           : Звуки и шумовые эффекты
    [21] =>     lyrics-eng      : Библиотека звуков: https://wav-library.net/
    [22] =>     genre           : Sound Clip
    [23] =>     date            : 2017
    [24] =>   Duration: 00:00:01.28, start: 0.025057, bitrate: 264 kb/s
    [25] =>     Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 256 kb/s
    [26] => Output #0, mp3, to 'sample2.mp3':
    [27] =>   Metadata:
    [28] =>     TSSE            : Lavf56.25.101
    [29] =>     Stream #0:0: Audio: mp3 (libmp3lame), 48000 Hz, stereo, fltp, 96 kb/s (default)
    [30] =>     Metadata:
    [31] =>       encoder         : Lavc56.26.100 libmp3lame
    [32] => Stream mapping:
    [33] =>   Stream #0:0 (mp3) -> aformat
    [34] =>   Stream #1:0 (mp3) -> atrim
    [35] =>   amix -> Stream #0:0 (libmp3lame)
    [36] => Press [q] to stop, [?] for help
    [37] => size=     272kB time=00:00:23.16 bitrate=  96.2kbits/s    
size=     557kB time=00:00:47.47 bitrate=  96.1kbits/s    
size=     841kB time=00:01:11.68 bitrate=  96.1kbits/s    
size=    1124kB time=00:01:35.88 bitrate=  96.1kbits/s    
size=    1403kB time=00:01:59.66 bitrate=  96.0kbits/s    
size=    1693kB time=00:02:24.38 bitrate=  96.0kbits/s    
size=    1893kB time=00:02:41.52 bitrate=  96.0kbits/s
    [38] => video:0kB audio:1893kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.017178%
)