TheoraSoftwareEncoders

Multi-platform

• ffmpeg2theora a commandline encoder from any format read by ffmpeg to Ogg Theora/Vorbis: svn, latest releases.
• VLC Media Player Can transcode from any source it supports into Ogg/Theora/
• GStreamer GStreamer is a library that allows the construction of graphs of media-handling components, ranging from simple Ogg/Vorbis playback to complex audio (mixing) and video (non-linear editing) processing.

Windows

• Visonair.tv Ogg Streamer A windows application to stream directly from a webcam to an Icecast server.
• Visonair.tv Virtual Stage Includes an application to encode to Ogg Theora, forces fixed size and encoding parameters though. Registration required.
• GFrontend ffmpeg2theora GUI Frontend for ffmpeg2theora

Linux/BSD

• Freej Freej is a realtime video mixer. It can stream ogg theora vorbis live to icecast. Check here for more info.
• OggConvert is a small Gnome utility which uses GStreamer to convert (almost) any media file to Ogg Vorbis, Theora and Dirac.

Mac OS X

• XiphQT allows you to export from Quicktime, or any application supporting Quicktime (i.e. Final Cut Pro), to Ogg Theora/Vorbis.
• Simple Theora Encoder an ffmpeg2theora frontend

See also

• Theora Hardware: List of hardware-players supporting Ogg Theora
• TheoraSoftwarePlayers: List of media players that can play Ogg Theora
• TheoraSoftwareEncoders: List of software that can encode to Ogg Theora
• TheoraDecoders: List of decoder implementations
• TheoraEncoders: List of encoder implementations
• List of Theora videos: Get some files to see what the codec's like
• Games that use Theora: List of known games that use Theora
• TheoraTestsuite: Different samples to test player compliance