ffmpeg 音声ファイルを連結する

there is something i want to do

音楽の長さを増やすために音楽Fileを連結したい。
連結する回数を増やせば、なが~い音楽Fileの作成も可能

Syntax

書式
ffmpeg -i input1.mp3 -i input2.mp3 -filter_complex “concat=n=2:v=0:a=1” output.mp3

Comment

Commnet
-i で複数の入力を指定
-o で連結後の出力Fielを指定

2個以上のFileの結合も可能
2個以上の結合の場合には”concat=n=2:v=0:a=1”の
n=の部分に結合するFileの数を指定します。

Example

[bash auto-linkss=”false” gutter=”false” lighte=”true” collapse=”false”]
#
#
#ffmpeg -i input1.mp3 -i input2.mp3 -filter_complex "concat=n=2:v=0:a=1" output.mp3
ffmpeg version 3.4.2-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
configuration: –enable-gpl –enable-version3 –enable-static –disable-debug –disable-ffplay –disable-indev=sndio –dis
able-outdev=sndio –cc=gcc-6 –enable-fontconfig –enable-frei0r –enable-gnutls –enable-gray –enable-libfribidi –enable-
libass –enable-libfreetype –enable-libmp3lame –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-libopenjpeg –
-enable-librubberband –enable-libsoxr –enable-libspeex –enable-libvorbis –enable-libopus –enable-libtheora –enable-lib
vidstab –enable-libvo-amrwbenc –enable-libvpx –enable-libwebp –enable-libx264 –enable-libx265 –enable-libxvid –enable
-libzimg
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mp3, from ‘input1.mp3’:
Metadata:
encoder : Lavf57.56.101
Duration: 00:05:00.15, start: 0.025057, bitrate: 192 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Metadata:
encoder : Lavc57.64
Input #1, mp3, from ‘input2.mp3’:
Metadata:
encoder : Lavf57.56.101
Duration: 00:05:00.15, start: 0.025057, bitrate: 192 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Metadata:
encoder : Lavc57.64
Stream mapping:
Stream #0:0 (mp3) -> concat:in0:a0
Stream #1:0 (mp3) -> concat:in1:a0
concat -> Stream #0:0 (libmp3lame)
Press [q] to stop, [?] for help
Output #0, mp3, to ‘output.mp3’:
Metadata:
TSSE : Lavf57.83.100
Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s16p (default)
Metadata:
encoder : Lavc57.107.100 libmp3lame
size= 9379kB time=00:10:00.21 bitrate= 128.0kbits/s speed=8.55x
video:0kB audio:9379kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.002634%
#
#
[/bash]

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