Bill Batterman's lecture at GDS this summer on how debaters should use film to their advantage is really a must see. In it, he discusses methods for recording your rounds, what you should be doing with them, recording etiquette, how to analyze the film and other useful tips. A link to the video is pasted below.
Additionally, Batterman discusses why you might want to keep some content private. At DebateVision.com, you can upload your videos to the cloud and share them with only those people you wish (your coaches, teammates, etc.). To use this feature, simply log in, click "Upload" in the upper right corner, and when listing the video details, change the video from "Public" to "Private" in the bottom drop down menu. Once you've uploaded the video, audio or photos, you can access them from your profile and share the private link. I hope this helps!