今天aiping点读笔的MP3源文件出现声音大小不一致,而且需要将英文单词MP3与单词翻译MP3文件连接起来,刚开始使用ffmpeg效果很差。万能的gitgub再次证明了它的万能,我找到了pydub
1 网址:https://github.com/jiaaro/pydub
2 pydub需要依赖 libav或者ffmpeg
3 在mac环境下安装依赖:(二选一)
brew install libav --with-libvorbis --with-sdl --with-theora 将所有依赖都安装上~~ brew install ffmpeg --with-fdk-aac --with-ffplay --with-freetype --with-frei0r --with-libass --with-libvo-aacenc --with-libvorbis--with-libvpx --with-opencore-amr --with-openjpeg --with-opus --with-rtmpdump --with-schroedinger --with-speex --with-theora --with-tools --with-fdk-aac --with-freetype --with-ffplay --with-ffplay --with-freetype --with-frei0r --with-libass --with-libbluray --with-libcaca --with-libquvi --with-libvidstab --with-libvo-aacenc --with-libvorbis --with-libvpx --with-opencore-amr --with-openjpeg --with-openssl --with-opus --with-rtmpdump --with-schroedinger --with-speex --with-theora --with-tools --with-x265
4 安装pydub: pip install pydub
5 使用pydub:
enPath = "%s%s/%s"%(enDir,file,enfile) #英文文件的路径 cnPath = "%s%s/%s"%(cnDir,file,enfile.replace("en_w","cn_w"))#中文文件的路径 targetPath = "%s%s/%s"%(toDir,file,enfile.replace("en_w","all")) #合并文件的路径 #加载MP3文件 song1 = AudioSegment.from_mp3(enPath) song2 = AudioSegment.from_mp3(cnPath) #取得两个MP3文件的声音分贝 db1 = song1.dBFS db2 = song2.dBFS song1 = song1[300:] #从300ms开始截取英文MP3 #调整两个MP3的声音大小,防止出现一个声音大一个声音小的情况 dbplus = db1 - db2 if dbplus < 0: # song1的声音更小 song1+=abs(dbplus) elif dbplus > 0: #song2的声音更小 song2+=abs(dbplus) #拼接两个音频文件 song = song1 + song2 #导出音频文件 song.export(targetPath, format="mp3") #导出为MP3格式
原文地址:http://blog.csdn.net/skywalkervvv/article/details/41685687