Changes between Version 7 and Version 8 of Encode/VP9


Ignore:
Timestamp:
Jul 18, 2017, 7:13:02 AM (3 months ago)
Author:
llogan
Comment:

add default audio encoder note and remove libvorbis instances

Legend:

Unmodified
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  • Encode/VP9

    v7 v8  
    77To install FFmpeg with support for libvpx-vp9, look at the [https://ffmpeg.org/trac/ffmpeg/wiki/CompilationGuide Compilation Guides] and compile FFmpeg with the {{{--enable-libvpx}}} option. Note that for 10-bit encoding, you need to set the `--enable-vp9-highbitdepth` configuration option. 
    88 
    9 Note that in the below examples, the libvorbis audio encoder is used. Make sure your FFmpeg version also includes libvorbis (check with {{{ffmpeg -codecs}}}), as the native Vorbis encoder from FFmpeg does not provide comparable quality. 
     9Note that the default audio encoder for WebM is libopus, but if it is not available then libvorbis will be used instead. 
    1010 
    1111== Variable Bitrate (VBR) ==#variableb 
     
    1616 
    1717{{{ 
    18 ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -c:a libvorbis output.webm 
     18ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M output.webm 
    1919}}} 
    2020 
     
    2626 
    2727{{{ 
    28 ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -c:a libvorbis -pass 1 -f webm /dev/null && \ 
    29 ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -c:a libvorbis -pass 2 output.webm 
     28ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -pass 1 -f webm /dev/null && \ 
     29ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -pass 2 output.webm 
    3030}}} 
    3131 
     
    4444 
    4545{{{ 
    46 ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 -b:v 0 -c:a libvorbis output.webm 
     46ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 -b:v 0 output.webm 
    4747}}} 
    4848 
     
    5454 
    5555{{{ 
    56 ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 -b:v 2000k -c:a libvorbis output.webm 
     56ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 -b:v 2000k output.webm 
    5757}}} 
    5858 
     
    6262 
    6363{{{ 
    64 ffmpeg -i input.mp4 -c:v libvpx-vp9 -minrate 500k -b:v 2000k -maxrate 2500k -c:a libvorbis output.webm 
     64ffmpeg -i input.mp4 -c:v libvpx-vp9 -minrate 500k -b:v 2000k -maxrate 2500k output.webm 
    6565}}} 
    6666 
     
    7272 
    7373{{{ 
    74 ffmpeg -i input.mp4 -c:v libvpx-vp9 -minrate 1M -maxrate 1M -b:v 1M -c:a libvorbis output.webm 
     74ffmpeg -i input.mp4 -c:v libvpx-vp9 -minrate 1M -maxrate 1M -b:v 1M output.webm 
    7575}}} 
    7676