More than 35 hours of video are uploaded to YouTube per minute, or 50,400 hours uploaded every day — the equivalent of more than 176,000 full-length Hollywood releases every week.

Here are some of the factors contributing to the growth:

• The time limit for videos uploaded by users increased by 50% from 10 to 15 minutes.
• The upload file size increased over the last few years by more than 10x to 2GB via our standard uploader.
• Mobile phones have improved dramatically in how quickly and easily they upload videos to YouTube.
• More companies integrating our APIs to support upload from outside of YouTube.com (Activision’s Call of Duty Black Ops. as one very cool example where you can record and share video footage from within the game).

More info: YouTube blog