High-Quality YouTube Hack
Jimmy Ruska (via Kottke) discovered a nice query string hack to enable high-quality videos on YouTube. Basically, just append this to a YouTube video URL:
&fmt=18
According to Ruska, the format 18 video is encoded using "H.264 with stereo AAC sound at 480x360." Following the Kottke post, a YouTube engineer responded with a format 22 video, which is encoded at 720p. The engineer also noted that not all videos have format 18 or 22 versions, dependent on the source file uploaded.

2 comments
Good stuff. Do you know if you can access the high-quality video in the chromeless player?
Will 2 years ago
Looks like you can add this string to the embed code:
&ap=%2526fmt%3D18
Look about halfway down Kottke's post to see it in context. I assume if it works for the standard embed it would work on the chromeless player.
Robbie 2 years ago