整理一下 编码、解码库

VP9 is an open and royalty free^[3] video coding format developed by Google. VP9 had earlier development names of Next Gen Open Video (NGOV) and VP-Next. VP9 is a successor to VP8. Its own successor, VP10, is currently under development. Chromium, Chrome, Firefox, and Opera support playing VP9 video format in the HTML5 video tag.

vp10还是草案

WebM, Matroska

https://en.wikipedia.org/wiki/VP9

Website  https://www.webmproject.org

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X265

官网 http://x265.org/

源代码 https://bitbucket.org/multicoreware/x265/wiki/Home

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https://github.com/strukturag/libde265

Software using libde265

http://www.libde265.org

Libde265 has been integrated into these applications:

• gstreamer plugin, source, binary packages.

• VLC plugin source, binary packages.

• Windows DirectShow filters, https://github.com/strukturag/LAVFilters/releases

• ffmpeg fork, https://github.com/farindk/ffmpeg

• ffmpeg decoder source

• libde265.js JavaScript decoder source, demo.

用libde265解码的CPU使用率，有点高， 如果 ARMv7 （没有SSE 指令集) 能降低到 30fps   5~10% 就好了。(这方面的话，因为分块也更细了，所以可能不是那么容易办到)

Resolution  avg. fps  CPU usage

720p          284 fps      39%

1080p        150 fps       45%

4K             36 fps         56%

Environment:

• Intel(R) Core(TM) i7-2700K CPU @ 3.50GHz (4 physical CPU cores)
• Ubuntu 12.04, 64bit
• GStreamer 0.10.36

 Open Source H.264 Codec   

https://github.com/cisco/openh264   分支 https://github.com/danielrh/losslessh264

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Video/Audio 

ffmpeg

 http://ffmpeg.org/

mp4v2

 https://code.google.com/p/mp4v2/

## audio

faad  http://www.audiocoding.com/ 

SimplE Lossless Audio   https://github.com/sahaRatul/sela

都支持unix like + windows

ffmpeg里面的doc弄的比较好，将来听说vp9的速度比google的还快，期待中，以后没有新的视频压缩格式出现，vp9肯定在4K称霸。（强烈推荐）

mp4v2 linux编译全都OK，windows 居然缺头文件。。。好吧，只能从SVN 中下。文档也有点少，感觉用着很蛋疼，无从下手。。（关于mp4操作都宁愿用ffmpeg）

 faad 可以解码aac音频格式，
其他的还有g711,g72X

还有adpcm

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## picture

Free Lossless Image Format   https://github.com/FLIF-hub/FLIF

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HEVC，VP9，x264性能对比