PS3 Media Server runs on your Mac as an DLNA compliant Upnp media server. You just share a folder (or more), and this folder you can browse on your PS3 - when you see a media file (e.g. MKV), just press play - and the media server will process real-time video transcoding via MEncoder to the PS3. This means the PS3 will play unsupported files. Even with external .srt / .sub subtitles.

Current features:

• Ready to launch and play. No codec packs to install. No folder configuration and pre-parsing or this kind of annoying thing. All your folders are directly browsed by the PS3, there's an automatic refresh also.
• Real-time video transcoding via MEncoder, tsMuxer or Avisynth
• DVD ISOs images / VIDEO_TS Folder transcoder
• OGG/FLAC/MPC/APE audio transcoding
• Thumbnail generation for Videos
• You can choose with a virtual folder system your audio/subtitle language on the PS3!
• All formats PS3 natively supports: MP3/WMA, JPG/PNG/GIF/TIFF, and all kind of videos (AVI, MP4, TS, M2TS, MPEG) the ps3 is willing to play
• Display camera RAWs thumbnails (Canon / Nikon, etc.)
• ZIP/RAR files as browsable folders for pictures/audio files
• Support for pictures based feeds, such as Flickr and Picasaweb
• Internet TV / Web Radio support with VLC, MEncoder or MPlayer
• Podcasts audio/ Video feeds support