I tried it in version 1.0, and I can support the MP3,MP4,FLV,F4V format. This will be very powerful, you can do music website, do video website. Regardless of the format of the media files in the background of the website, the front end is played by the RTMP protocol with the Flash player. If it's live, use Adobe's own flash live Media Encoder to do provider
Red5 uses Java development, function and performance are very good, personally feel no less than the application of native.
I have not tried the seek function in the process of playing a file, but I tried to start playback time offset playback, that is, not from the beginning of the file, but from the beginning of the number of milliseconds after the start to receive the stream to play, the result failed. The RTMPD can support time offset playback. I guess I'll have to take some time to fix this bug and write down the memo first.