Cyphertext Attacks, Key Rotation, and Apple iMessage

How do I download the videos?

• To download, right click the file type you would like and pick “Save target as…” or “Save link as…”

Why should I download videos from Channel9?

• It's an easy way to save the videos you like locally.
• You can save the videos in order to watch them offline.
• If all you want is to hear the audio, you can download the MP3!

Which version should I choose?

• If you want to view the video on your PC, Xbox or Media Center, download the High Quality MP4 file (this is the highest quality version we have available).
• If you'd like a lower bitrate version, to reduce the download time or cost, then choose the Medium Quality MP4 file.
• If you have a Windows Phone, iPhone, iPad, or Android device, choose the low or medium MP4 file.
• If you just want to hear the audio of the video, choose the MP3 file.