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ffmpeg - 没有使用 webm/libvorbis 使用 ffmpeg 编码的音频

转载 作者：行者123 更新时间：2023-12-04 23:06:35 25 4
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将音频编码为 webm 时遇到问题。尝试了许多不同的方法，它只是没有发生。每次通过之前，命令都打印在下面。

我尝试过移动音频命令，尝试不同的比特率，不同的音频命令，并在几个不同的文件上尝试过，它们都有音频。

使用 x264 将这些文件编码为 MP4 不会导致任何问题，并且工作正常并且可以播放音频，因此这似乎只是 webm 的问题。正如您在下面看到的，它是一个 2-pass 编码。

感谢您的任何帮助，您可以提供!

克雷格

Webm LG PASS 1...........................




    webm_pass1: /usr/bin/ffmpeg -i /home/thedirectory/video613268.mov  -codec:v libvpx -quality good -vf 'scale=640:360 [scaled];movie=/home/thedirectory/watermarks/w640X360.png [logo];[scaled][logo] overlay' -cpu-used 0 -b:v 500k -aspect 16:9 -qmin 10 -qmax 42 -maxrate:v 500k -bufsize:v 1000k -r:v 25/1 -force_fps -threads 0 -an -acodec libvorbis -ac 2 -ab 96k -ar 44100 -pass 1 -f webm -y /dev/null



    ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
      built on Mar 11 2013 14:48:26 with gcc 4.6.2 20111027 (Red Hat 4.6.2-2)
      configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab --enable-libvorbis --enable-libvpx
      libavutil      51. 35.100 / 51. 35.100
      libavcodec     53. 61.100 / 53. 61.100
      libavformat    53. 32.100 / 53. 32.100
      libavdevice    53.  4.100 / 53.  4.100
      libavfilter     2. 61.100 /  2. 61.100
      libswscale      2.  1.100 /  2.  1.100
      libswresample   0.  6.100 /  0.  6.100
      libpostproc    52.  0.100 / 52.  0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/thedirectory/video613268.mov':
      Metadata:
        major_brand     : qt  
        minor_version   : 537199360
        compatible_brands: qt  
        creation_time   : 2013-02-23 20:04:32
      Duration: 00:00:21.02, start: 0.000000, bitrate: 114326 kb/s
        Stream #0:0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj422p, 1920x1080 [SAR 72:72 DAR 16:9], 112786 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
        Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
    Incompatible pixel format 'yuvj422p' for codec 'libvpx', auto-selecting format 'yuv420p'
    [buffer @ 0x1f675a0] w:1920 h:1080 pixfmt:yuvj422p tb:1/1000000 sar:1/1 sws_param:
    [movie @ 0x1f799c0] seek_point:0 format_name:(null) file_name:/home/thedirectory/watermarks/w640X360.png stream_index:0
    [overlay @ 0x1f7c2c0] auto-inserting filter 'auto-inserted scale 0' between the filter 'Parsed_movie_1' and the filter 'Parsed_overlay_2'
    [scale @ 0x1f78d40] w:1920 h:1080 fmt:yuvj422p -> w:640 h:360 fmt:yuv420p flags:0x4
    [scale @ 0x1f7cde0] w:640 h:360 fmt:rgba -> w:640 h:360 fmt:yuva420p flags:0x4
    [overlay @ 0x1f7c2c0] main w:640 h:360 fmt:yuv420p overlay x:0 y:0 w:640 h:360 fmt:yuva420p
    [overlay @ 0x1f7c2c0] main_tb:1/1000000 overlay_tb:1/25 -> tb:1/1000000 exact:1
    [libvpx @ 0x1f77ce0] v1.0.0
    Output #0, webm, to '/dev/null':
      Metadata:
        major_brand     : qt  
        minor_version   : 537199360
        compatible_brands: qt  
        creation_time   : 2013-02-23 20:04:32
        encoder         : Lavf53.32.100
        Stream #0:0(eng): Video: vp8, yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=10-42, pass 1, 500 kb/s, 1k tbn, 25 tbc
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
    Stream mapping:
      Stream #0:0 -> #0:0 (mjpeg -> libvpx)
    Press [q] to stop, [?] for help
    frame=  527 fps= 21 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=   0.0kbits/s dup=0 drop=103    
    video:0kB audio:0kB global headers:0kB muxing overhead -nan%
    Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
    Webm LG PASS 2.......................




    webm_pass2: /usr/bin/ffmpeg -i /home/thedirectory/video613268.mov -codec:v libvpx -quality good -vf 'scale=640:360 [scaled];movie=/home/thedirectory/watermarks/w640X360.png [logo];[scaled][logo] overlay' -cpu-used 0 -b:v 500k  -aspect 16:9  -qmin 10 -qmax 42 -maxrate:v 500k -bufsize:v 1000k -r:v 24/1 -force_fps -threads 0 -an -acodec libvorbis -ac 2 -ab 96k -ar 44100 -pass 2 -f webm -y /media/amazons3/webmlg/video613268.mov.webm



    ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
      built on Mar 11 2013 14:48:26 with gcc 4.6.2 20111027 (Red Hat 4.6.2-2)
      configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-libfaac --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 --enable-x11grab --enable-libvorbis --enable-libvpx
      libavutil      51. 35.100 / 51. 35.100
      libavcodec     53. 61.100 / 53. 61.100
      libavformat    53. 32.100 / 53. 32.100
      libavdevice    53.  4.100 / 53.  4.100
      libavfilter     2. 61.100 /  2. 61.100
      libswscale      2.  1.100 /  2.  1.100
      libswresample   0.  6.100 /  0.  6.100
      libpostproc    52.  0.100 / 52.  0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/thedirectory/video613268.mov':
      Metadata:
        major_brand     : qt  
        minor_version   : 537199360
        compatible_brands: qt  
        creation_time   : 2013-02-23 20:04:32
      Duration: 00:00:21.02, start: 0.000000, bitrate: 114326 kb/s
        Stream #0:0(eng): Video: mjpeg (jpeg / 0x6765706A), yuvj422p, 1920x1080 [SAR 72:72 DAR 16:9], 112786 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
        Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
    Incompatible pixel format 'yuvj422p' for codec 'libvpx', auto-selecting format 'yuv420p'
    [buffer @ 0x1f2a5a0] w:1920 h:1080 pixfmt:yuvj422p tb:1/1000000 sar:1/1 sws_param:
    [movie @ 0x1f3bec0] seek_point:0 format_name:(null) file_name:/home/thedirectory/watermarks/w640X360.png stream_index:0
    [overlay @ 0x1f3f2c0] auto-inserting filter 'auto-inserted scale 0' between the filter 'Parsed_movie_1' and the filter 'Parsed_overlay_2'
    [scale @ 0x1f3c8a0] w:1920 h:1080 fmt:yuvj422p -> w:640 h:360 fmt:yuv420p flags:0x4
    [scale @ 0x1f3fde0] w:640 h:360 fmt:rgba -> w:640 h:360 fmt:yuva420p flags:0x4
    [overlay @ 0x1f3f2c0] main w:640 h:360 fmt:yuv420p overlay x:0 y:0 w:640 h:360 fmt:yuva420p
    [overlay @ 0x1f3f2c0] main_tb:1/1000000 overlay_tb:1/25 -> tb:1/1000000 exact:1
    [libvpx @ 0x1f3ace0] v1.0.0
    Output #0, webm, to '/media/amazons3/webmlg/video613268.mov.webm':
      Metadata:
        major_brand     : qt  
        minor_version   : 537199360
        compatible_brands: qt  
        creation_time   : 2013-02-23 20:04:32
        encoder         : Lavf53.32.100
        Stream #0:0(eng): Video: vp8, yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=10-42, pass 2, 500 kb/s, 1k tbn, 24 tbc
        Metadata:
          creation_time   : 2013-02-23 20:04:32
          handler_name    : ?Gestionnaire d?alias Apple
    Stream mapping:
      Stream #0:0 -> #0:0 (mjpeg -> libvpx)
    Press [q] to stop, [?] for help
    frame=  506 fps=  7 q=0.0 Lsize=    1610kB time=00:00:21.08 bitrate= 625.8kbits/s dup=0 drop=124    
    video:1389kB audio:0kB global headers:0kB muxing overhead 15.952140%

最佳答案

-an option用于产生没有音频的输出。如果您想要音频，请删除此选项。

关于ffmpeg - 没有使用 webm/libvorbis 使用 ffmpeg 编码的音频，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15421819/

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