I am delivering a new website using EPiServer 5 and Relate+ which includes a Video Gallery. My supplier is telling me that only the EPiServer CDN can be used for the Relate+ Video Gallery - is this true, or is there a way to configure use of an alternative CDN (e.g. YouTube)?
You can use other CDNs than the EPiServer CDN, but this might include a bit of coding and customization. Have a look at the 'Web TV and streaming' section here: http://www.episerver.com/en/Extras/
I'm currently working on a project where we'll be using Qbrick instead of the EPiServer CDN, but in order to do so we'll have to replace the videoplayer and all the code for uploading/retrieving videos.