ET had a /record command that was really useful for recording/sharing matches, and it was even required for TWL competitive play. It looks like [UDK supports a similar commands: demorec, demoplay, and demostop](https://udn.epicgames.com/Three/ConsoleCommands.html#Still Captures and Demo Recording Commands). Although the commands seem to work (not autocompleted), trying to replay a demo results in a crash.
Demo recording offers several benefits over Fraps, Dxtory, etc.:
- Significantly more performant, so players with lower-end machines will be able to record.
- The resulting .demo files are significantly smaller than videos.
- You can change your graphics settings for the recording (play with low settings, record the video later in high settings).
It’d be great if this was officially supported. Thanks!