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  WebM decoder in Flash, yes someone was bold enough to try it  (Read 1396 times)
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Offline whome

Junior Devvie

Carte Noir Java

« Posted 2011-01-14 15:52:13 »
Ralph Hauwert has been posting on twitter about work he’s done on getting WebM decoding to work in Flash by compiling the libvpx source code using Adobe’s Alchemy technology. Alchemy is a research project that allows compilation of C and C++ libraries into code that runs on the ActionScript virtual machine used by Flash. The intial performance of a 1920x1080 VP8 video with no audio was decoding to YUV at about 1.5 frames per second.

Congrats for trying it out in ActionScript, not many want to try porting WebM video decoder to an another language.

Googling Java+WebM around gives WebM Image decoder, but not video decoders. I guess its something no real reason to do it, much much easier to plug into ffmpeg/mencoder/vlc/gstreamer binary libraries.
Offline Momoko_Fan

Junior Devvie

Medals: 2

« Reply #1 - Posted 2011-01-14 17:22:43 »

Complex codecs like VP8 or H264 probably won't run in Java (or ActionScript) very well, since optimizations like SSE cannot be used.
Still less complex codecs like Theora or MPEG4, if done correctly and multithreaded, can be decoded in Java in half-HD resolution Smiley
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