avconv在将mov转换为ogg时抛出错误

Question

在尝试使用avconv和ffmpeg将mov文件转换为ogg时，我经常遇到以下错误。我完全无法理解下面显示的冗长信息。

我看了看类似的线索，但什么也看不出来。有人有什么想法吗？

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打开输出流#0:1的编码器时出错-可能是错误的参数，如比特率、速率、宽度或高度

ffmpeg错误，而转换为mp4错误，而打开编码器输出流#0.0

http://drupal.org/node/1779298

 
    parth@parth-laptop:~/Desktop$ avconv -i IMG_0243.mp4 -acodec vorbis -f ogg IMG_0243.ogv 
    avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
      built on Jun 12 2012 16:37:58 with gcc 4.6.3
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0243.mp4':
      Metadata:
        major_brand     : qt  
        minor_version   : 0
        compatible_brands: qt  
        creation_time   : 2012-02-25 00:11:52
        encoder         : 5.0.1
        encoder-eng     : 5.0.1
        date            : 2012-02-24T16:11:52-0800
        date-eng        : 2012-02-24T16:11:52-0800
      Duration: 00:00:34.59, start: 0.000000, bitrate: 24121 kb/s
        Stream #0.0(und): Video: h264 (Baseline), yuv420p, 1920x1080, 24069 kb/s, 24.01 fps, 24 tbr, 600 tbn, 1200 tbc
        Metadata:
          creation_time   : 2012-02-25 00:11:52
        Stream #0.1(und): Audio: aac, 44100 Hz, mono, s16, 62 kb/s
        Metadata:
          creation_time   : 2012-02-25 00:11:52
    File 'IMG_0243.ogv' already exists. Overwrite ? [y/N] y
    [buffer @ 0x8da9ce0] w:1920 h:1080 pixfmt:yuv420p
    [vorbis @ 0x8dc74e0] Current Libav Vorbis encoder only supports 2 channels.
    Output #0, ogg, to 'IMG_0243.ogv':
      Metadata:
        major_brand     : qt  
        minor_version   : 0
        compatible_brands: qt  
        creation_time   : 2012-02-25 00:11:52
        encoder         : 5.0.1
        encoder-eng     : 5.0.1
        date            : 2012-02-24T16:11:52-0800
        date-eng        : 2012-02-24T16:11:52-0800
        Stream #0.0(und): Video: libtheora, yuv420p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 24 tbc
        Metadata:
          creation_time   : 2012-02-25 00:11:52
        Stream #0.1(und): Audio: libvorbis, 44100 Hz, mono, s16, 200 kb/s
        Metadata:
          creation_time   : 2012-02-25 00:11:52
    Stream mapping:
      Stream #0:0 -> #0:0 (h264 -> libtheora)
      Stream #0:1 -> #0:1 (aac -> vorbis)
    Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

编辑：

我真的成功了。。。但由于某些原因，现在无法获得超过8的FPS。

有效的命令是

avconv -i IMG_0243.mp4 -acodec libvorbis -f ogg -r 24.01 IMG_0243.ogv -ac 2 -ar 44100 -b 64k -s 1920x1080

Answer 1

如果你说的是屏幕上打印的fps，那只是编码的速率。它与将要创建的文件的fps无关。编码1080p需要高端硬件和快速编码器。虽然你可能有硬件库，但它不像其他编码器那样优化。所以它会很慢。