YouTube Latest Release Notes: Aspect Ratio, Display Cropping/Stretching with Tags

New Options for Uploaders: In our continued effort to give you ultimate control over how your videos are presented, uploaders can now tweak the appearance of their video when played on YouTube or in an embedded player. Just insert any of the hint tags below into the tags field of your video and voila!

• yt:crop=16:9 (zooms in on the 16:9 area, removes windowboxing)
• yt:stretch=16:9 (fixes anamorphic content by scaling to 16:9)
• yt:stretch=4:3 (fixes 720x480 content that is the wrong aspect ratio by scaling to 4:3)
• yt:quality=high (default to a high quality stream, depending on availability)