MP4 authoring
After Jon’s release of pyMusique, I felt the strong need to get my hands on a working MPEG-4 ISO muxer (for GStreamer). Reasons are simple:

• Writing tags to music downloaded from iTMS (yes, they’re untagged!).
• Capture MPEG-4 video/audio in a MPEG-4 container using Cupid.
• Transcoding my Ogg/Vorbis files to MPEG-4 so I can transfer them to my iPod.

And so I did. GStreamer can now write full-spec MPEG-4 files. Screenshot. Tested with all of the above use cases. (3) can be done using gst-launch, tags are conserved. (2) just works. Jon is adding support for (1) right now. Get your daily dose of GStreamer CVS right now!