【问题标题】:ffmpeg stream video file from ubuntu to youtubeffmpeg 将视频文件从 ubuntu 流式传输到 youtube
【发布时间】:2018-03-14 08:41:25
【问题描述】:

我正在尝试创建一个到 youtube 的流。我可以看到预览按钮如何变为启用状态。但是,它实际上从未从离线状态更改。 它给了我几个错误。我究竟做错了什么?

     ffmpeg -i video.flv -f flv rtmp://a.rtmp.youtube.com/live2/XXXXXX


  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
    Input #0, flv, from 'video.flv':
      Metadata:
        major_brand     : qt  
        minor_version   : 0
        compatible_brands: qt  
        com.apple.quicktime.creationdate: 2017-07-20T21:44:12+0700
        com.apple.quicktime.make: Apple
        com.apple.quicktime.model: iPhone 6s Plus
        com.apple.quicktime.software: 10.3.2
        encoder         : Lavf57.83.100
      Duration: 00:01:15.24, start: 0.000000, bitrate: 4454 kb/s
        Stream #0:0: Video: flv1, yuv420p, 1920x1080, 200 kb/s, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc
        Stream #0:1: Audio: adpcm_swf, 44100 Hz, mono, s16, 176 kb/s
    Output #0, flv, to 'rtmp://a.rtmp.youtube.com/XXXXXX':
      Metadata:
        major_brand     : qt  
        minor_version   : 0
        compatible_brands: qt  
        com.apple.quicktime.creationdate: 2017-07-20T21:44:12+0700
        com.apple.quicktime.make: Apple
        com.apple.quicktime.model: iPhone 6s Plus
        com.apple.quicktime.software: 10.3.2
        encoder         : Lavf56.40.101
        Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1920x1080, q=2-31, 200 kb/s, 29.97 fps, 1k tbn, 29.97 tbc
        Metadata:
          encoder         : Lavc56.60.100 flv
        Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, mono, s16p
        Metadata:
          encoder         : Lavc56.60.100 libmp3lame
    Stream mapping:
      Stream #0:0 -> #0:0 (flv1 (flv) -> flv1 (flv))
      Stream #0:1 -> #0:1 (adpcm_swf (native) -> mp3 (libmp3lame))
    Press [q] to stop, [?] for help
    [flv @ 0x162bac0] Failed to update header with correct duration.ate=4125.4kbits/s    
    [flv @ 0x162bac0] Failed to update header with correct filesize.
    frame= 2255 fps=114 q=31.0 Lsize=   37863kB time=00:01:15.24 bitrate=4122.0kbits/s    
    video:37194kB audio:588kB subtitle:0kB other streams:0kB global 

headers:0kB 混合开销:0.213941%

【问题讨论】:

    标签: ubuntu ffmpeg youtube stream


    【解决方案1】:

    流式传输视频文件时,您应该使用-re 选项。否则ffmpeg 将尝试尽可能快地对其进行编码。

    假设您的文件格式和参数适合这样做,您可以尝试流式复制:

    ffmpeg -re -i video.flv -c copy -f flv rtmp://a.rtmp.youtube.com/live2/XXXXXX
    

    或者重新编码:

    ffmpeg -re -i video.flv -c:v libx264 -b:v 4000k -maxrate 4000k -bufsize 6000k -pix_fmt yuv420p -g 60 -c:a aac -f flv rtmp://a.rtmp.youtube.com/live2/XXXXXX
    

    【讨论】:

    • 感谢您的帮助,我明白了 - 我的问题与 youtube 质量设置和视频时长有关。
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