You can play most MP4 (.mp4), Windows Media Video (.wmv), QuickTime movie (.mov), and Apple video files (.m4v) directly from SkyDrive in most web browsers. To play videos on SkyDrive in your web browser, you might need to install Silverlight. If a video doesn’t play, its audio or video stream might be one that we don’t support. DRM-protected video files also can’t be played on SkyDrive. For more info about the encodings and video containers we support, search the SkyDrive forums.
If you have videos in a different format, you can still upload them to SkyDrive, but they might not play directly in a browser. To view them on a device, you’ll need to download them first.