I'm the developer of this channel and am not directly associated with CCC; I asked for permission to use their API to provide these videos for Roku users and have been developing it off-and-on for a few months. I'm planning on adding more conferences from their collection, but in order to meet the Roku Direct Publisher requirements, I have to make some additional assets for each event beyond what's provided on their site.

Code for my API parser and feed generator is at https://github.com/unwiredben/media.ccc.de-on-roku