以下是我的内容:input1.avi
- 包含声音的视频。 input2.avi
- 不包含声音的视频。 music.mp3 - 音频文件。
我想在视频中添加背景音乐(music.mp3文件)。
C:\ input1.avi -i C:\ music.mp3 -shortest -c:v copy -c:副本C:\ output1.avi 然后output1.avi与input1相同 - 带声音的电影但没有背景音乐(music.mp3)
当我尝试使用其他文件(没有声音的视频)时:
C:\ input2.avi -i C:\ music.mp3 -shortest -c:v copy -c:副本C:\ output2.avi 然后output2.avi与input2 +相同,它有背景音乐。
我也尝试执行此操作:
C:\ffmpeg\bin>ffmpeg -i C:\input.avi -i C:\music.mp3 -shortest -c:v copy -filter_ complex "[1]volume=1.5[1a];[0][1a]amerge[a]" -map 0:v -map "[a]" -ac 2 C:\output1.avi
但得到了下一个错误消息:
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
-lzma --enable-decklink --enable-zlib
libavutil 55. 19.100 / 55. 19.100
libavcodec 57. 27.101 / 57. 27.101
libavformat 57. 28.100 / 57. 28.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 39.100 / 6. 39.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, avi, from 'C:\output1.avi':
Metadata:
encoder : Lavf57.28.100
Duration: 00:02:05.76, start: 0.000000, bitrate: 450 kb/s
Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720
x480 [SAR 1:1 DAR 3:2], 440 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
b/s
[mp3 @ 00000000005abc20] Skipping 0 bytes of junk at 32370.
Input #1, mp3, from 'C:\music.mp3':
Metadata:
title : Broadcast News Package - News Intro
artist : After Effects News Template
Duration: 00:01:57.89, start: 0.025057, bitrate: 194 kb/s
Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Metadata:
encoder : Lavc56.26
[Parsed_amerge_1 @ 0000000000610200] No channel layout for input 1
[Parsed_amerge_1 @ 0000000000610200] No channel layout for input 2
[AVFilterGraph @ 00000000005ddfe0] The following filters could not choose their
formats: Parsed_amerge_1
Consider inserting the (a)format filter near their input or output.
Error configuring complex filters.
I/O error
那么为什么input1不包含背景音乐?以及如何减少或增加music.mp3文件的音量?
答案 0 :(得分:0)
一种方法是一起使用ffmpeg和Sox(http://sox.sourceforge.net):
此sox命令允许您合并两个音频文件,根据需要设置音量:
sox -m -v videoVol ./temp/videoAudio.mp3 -v musicVol ./temp/tempMusic.mp3 ./temp/mixedAudio.mp3
有几点需要注意:
用于更改音频速率的Sox语法:
sox ./temp/videoAudio.mp3 -r 44100 ./temp/videoAudioAdjusted.mp3