如何使用ffmpeg版本3.4.8合并2个FLAC文件

问题描述

我正在尝试通过CLI连接Ubuntu中的2个flac文件。第一个flac文件是“ mynameis.flac”,其中包含“我的名字是”的音频,持续2.66秒。第二个flac文件是“ stt_VNFKEY.fac”,其中包含持续时间为1.9秒的名称的音频。成功连接后,我希望输出“ test.flac”应包含大约3.56秒(2.66 + 1.9)的音频。但是,以下命令仅在输出中产生“ mynameis”。我需要怎么做才能同时容纳这两个阵地?

ffmpeg -i mynameis.flac -i stt_VNFKEY.flac test.flac


ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  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
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0,flac,from 'mynameis.flac':
  Duration: 00:00:02.66,start: 0.000000,bitrate: 108 kb/s
    Stream #0:0: Audio: flac,16000 Hz,mono,s16
Input #1,from 'stt_VNFKEY.flac':
  Duration: 00:00:01.90,bitrate: 87 kb/s
    Stream #1:0: Audio: flac,s16
File 'test.flac' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (flac (native) -> flac (native))
Press [q] to stop,[?] for help
Output #0,to 'test.flac':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Audio: flac,s16,128 kb/s
    Metadata:
      encoder         : Lavc57.107.100 flac
size=      36kB time=00:00:02.66 bitrate= 110.3kbits/s speed= 881x
video:0kB audio:28kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 29.205723%                                                                                               

解决方法

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