Changes between Version 7 and Version 8 of Encode/VP9


Ignore:
Timestamp:
Jul 18, 2017, 4:13:02 AM (9 years 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