Along with libtheora-1.0alpha5 this is a release of theora-mmx. A drop in replacement that uses MMX assembly to speedup some of the most demanding routines in theora encoding/decoding. Right now it only works on 32bit x86 CPUs. Thanks to everyone whose work made this release possible! Download links: http://downloads.xiph.org/releases/theora/libtheora-mmx-1.0alpha5.tar.bz2 http://downloads.xiph.org/releases/theora/libtheora-mmx-1.0alpha5.tar.gz http://downloads.xiph.org/releases/theora/libtheora-mmx-1.0alpha5.zip As always, you can insert .eu, au, or us. in the url after 'downloads.' to access a more local mirror. Updated API documentation and spec: http://theora.org/doc/libtheora-1.0alpha5/ http://theora.org/doc/libtheora-1.0alpha5.pdf http://theora.org/doc/Theora_I_spec.pdf SHA-1 checksums: c44254791a6f4f8a97ebbbe81b3a99f26899a59a libtheora-mmx-1.0alpha5.tar.bz2 95dbbba0ae847849c8f30f09ed7a8d99380c4185 libtheora-mmx-1.0alpha5.tar.gz f757cd16141abfc32592dc6335935617421b0aba libtheora-mmx-1.0alpha5.zip MD5 checksums: 5d35bb7210c0a699d28aaf9baf7bb2e0 libtheora-mmx-1.0alpha5.tar.bz2 1e31f21088689dab3c3ad40b50c01844 libtheora-mmx-1.0alpha5.tar.gz 5641cf702dea29540453bb3de8364288 libtheora-mmx-1.0alpha5.zip