ffmpeg的-acodec没有找到，但安装

Question

我试图改变一个YouTube视频网址通过ffmpeg的一个MP3，所以我可以流在Ubuntu 14.04

ffmpeg -i https://r7---sn-ab5l6ne7.googlevideo.com/videoplayback?mime=video%2Fmp4&requiressl=yes&signature=99EFD8B801C44EA1221B5D653B2EB30C4CE962C6.6CD123737E54A11B0E5B16BC7AA2572688B091D9&source=youtube&mn=sn-ab5l6ne7&upn=2c_sPjXh1FE&itag=22&pl=16&mt=1450291179&ms=au&expire=1450312883&mm=31&id=o-ABMSf6BaCXTeSmFM41vs85JJ2rmcdeD6CVriiGKVMDlG&sver=3&ratebypass=yes&ip=68.9.161.152&sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&key=yt6&lmt=1429526600478294&dur=6.385&fexp=9416126%2C9420452%2C9422596%2C9423459%2C9423662&mv=m&ipbits=0&initcwndbps=2147500 -acodec liblamemp3 -f mp3 shave.mp3 

但是当我运行这个命令，我结束了响应与此问题

ffmpeg -i https://r7---sn-ab5l6ne7.googlevideo.com/videoplayback?mime=video%2Fmp4&requiressl=yes&signature=99EFD8B801C44EA1221B5D653B2EB30C4CE962C6.6CD123737E54A11B0E5B16BC7AA2572688B091D9&source=youtube&mn=sn-ab5l6ne7&upn=2c_sPjXh1FE&itag=22&pl=16&mt=1450291179&ms=au&expire=1450312883&mm=31&id=o-ABMSf6BaCXTeSmFM41vs85JJ2rmcdeD6CVriiGKVMDlG&sver=3&ratebypass=yes&ip=68.9.161.152&sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire&key=yt6&lmt=1429526600478294&dur=6.385&fexp=9416126%2C9420452%2C9422596%2C9423459%2C9423662&mv=m&ipbits=0&initcwndbps=2147500 -acodec liblamemp3 -f mp3 shave.mp3[19] 8925 
[20] 8926 
[21] 8927 
[22] 8928 
[23] 8929 
[24] 8930 
[25] 8931 
[26] 8932 
[27] 8933 
[28] 8934 
[29] 8935 
[30] 8936 
[31] 8937 
[32] 8938 
[33] 8939 
[34] 8940 
[35] 8941 
[36] 8942 
[37] 8943 
[38] 8944 
[39] 8945 
[40] 8946 
[41] 8947 
ffmpeg version git-2015-12-10-3652dd5 Copyright (c) 2000-2015 the FFmpeg developers 
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04) 
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-openssl --enable-nonfree --enable-version3 --enable-gnutls 
    libavutil  55. 10.100/55. 10.100 
    libavcodec  57. 17.100/57. 17.100 
    libavformat 57. 19.100/57. 19.100 
    libavdevice 57. 0.100/57. 0.100 
    libavfilter  6. 20.100/6. 20.100 
    libswscale  4. 0.100/4. 0.100 
    libswresample 2. 0.101/2. 0.101 
    libpostproc 54. 0.100/54. 0.100 
-acodec: command not found 
[20] Done     requiressl=yes 
[21] Done     signature=99EFD8B801C44EA1221B5D653B2EB30C4CE962C6.6CD123737E54A11B0E5B16BC7AA2572688B091D9 
[22] Done     source=youtube 
[23] Done     mn=sn-ab5l6ne7 
[24] Done     upn=2c_sPjXh1FE 
[25] Done     itag=22 
[26] Done     pl=16 
[27] Done     mt=1450291179 
[28] Done     ms=au 
[29] Done     expire=1450312883 
[30] Done     mm=31 
[31] Done     id=o-ABMSf6BaCXTeSmFM41vs85JJ2rmcdeD6CVriiGKVMDlG 
[32] Done     sver=3 
[33] Done     ratebypass=yes 
[34] Done     ip=68.9.161.152 
[35] Done     sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire 

[19]+ Stopped     ffmpeg -i https://r7---sn-ab5l6ne7.googlevideo.com/videoplayback?mime=video%2Fmp4 
[20] Done     requiressl=yes 
[21] Done     signature=99EFD8B801C44EA1221B5D653B2EB30C4CE962C6.6CD123737E54A11B0E5B16BC7AA2572688B091D9 
[22] Done     source=youtube 
[23] Done     mn=sn-ab5l6ne7 
[24] Done     upn=2c_sPjXh1FE 
[25] Done     itag=22 
[26] Done     pl=16 
[27] Done     mt=1450291179 
[28] Done     ms=au 
[29] Done     expire=1450312883 
[30] Done     mm=31 
[31] Done     id=o-ABMSf6BaCXTeSmFM41vs85JJ2rmcdeD6CVriiGKVMDlG 
[32] Done     sver=3 
[33] Done     ratebypass=yes 
[34] Done     ip=68.9.161.152 
[35] Done     sparams=dur%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cupn%2Cexpire 
[36] Done     key=yt6 
[37] Done     lmt=1429526600478294 
[38] Done     dur=6.385 
[39] Done     fexp=9416126%2C9420452%2C9422596%2C9423459%2C9423662 
[40] Done     mv=m 
[41] Done     ipbits=0 

现在我不知道为什么它不断吐出这一点。我曾尝试使用' - '变量进行流输出，但仍无济于事。

我已经安装了ffmpeg和所有依赖项。我用this bash script来编译ffmpeg。我一直在努力工作几天，仍然看不出来。

Answer 1

在输入URL周围放置双引号（"）。见FFmpeg Documentation: Quoting and Escaping。