我一直在使用以下命令尝试从mp3文件中删除静默段
ffmpeg -i "podcasts/audio1.mp3" -af silenceremove=1:0:-50dB "/tmp/pod-sil.mp3"
由于某种原因，生成的mp3是输入mp3的两倍。它不是快一半。似乎没有任何重复的音频。有一些沉默，但不是一个小时的价值。对于输入文件的给定部分，您可以通过输入文件的时间戳的两倍来在输出文件中找到相同的内容。
文件很长，所以我还没有听完它们。我真的不知道额外的长度来自哪里，文件似乎正常。
以下是ffmpeg
的完整输出ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --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-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
[mp3 @ 0x21880e0] Skipping 0 bytes of junk at 0.
[mp3 @ 0x21880e0] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from 'podcasts/audio1.mp3':
Duration: 01:00:00.20, start: 0.000000, bitrate: 320 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
File '/tmp/pod-sil.mp3' already exists. Overwrite ? [y/N] y
Output #0, mp3, to '/tmp/pod-sil.mp3':
Metadata:
TSSE : Lavf56.40.101
Stream #0:0: Audio: mp3 (libmp3lame), 44100 Hz, stereo, fltp
Metadata:
encoder : Lavc56.60.100 libmp3lame
Stream mapping:
Stream #0:0 -> #0:0 (mp3 (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
[libmp3lame @ 0x21999e0] Trying to remove 1152 samples, but the queue is empty
size= 56253kB time=01:00:00.16 bitrate= 128.0kbits/s
video:0kB audio:56253kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000439%