Changes between Version 9 and Version 10 of Encode/VP9


Ignore:
Timestamp:
Dec 28, 2017, 11:37:11 AM (12 months ago)
Author:
slhck
Comment:

info on compression efficiency; add relevant paper

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  • Encode/VP9

    v9 v10  
    33[[PageOutline(2, Contents)]] 
    44 
    5 libvpx-vp9 is the VP9 video encoder for [http://www.webmproject.org/about/ WebM], an open, royalty-free media file format. This guide is an attempt to summarize the most important options for creating video with libvpx-vp9. 
     5`libvpx-vp9` is the VP9 video encoder for [http://www.webmproject.org/about/ WebM], an open, royalty-free media file format. `libvpx-vp9` can save about 20–50% bitrate compared to `libx264` (the default [[H.264]] encoder), while retaining the same visual quality. 
    66 
    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 the default audio encoder for WebM is libopus, but if it is not available then libvorbis will be used instead. 
     9Note that the default audio encoder for WebM is `libopus`, but if it is not available `libvorbis` will be used instead. 
    1010 
    1111VP9 offers [https://developers.google.com/media/vp9/bitrate-modes/ different rate control modes], which determine the quality and file size: 
     
    131131* [https://developers.google.com/media/vp9/ Google VP9 Guide] 
    132132* [https://sites.google.com/a/webmproject.org/wiki/ffmpeg/vp9-encoding-guide VP9 Encoding Guide] 
     133* [https://medium.com/netflix-techblog/a-large-scale-comparison-of-x264-x265-and-libvpx-a-sneak-peek-2e81e88f8b0f Netflix Tech Blog — A Large-Scale Comparison of x264, x265, and libvpx] ([https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9971/997116/A-large-scale-video-codec-comparison-of-x264-x265-and/10.1117/12.2238495.short?SSO=1 link to paper]) 
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