YouTube Hacks: URL tricks
Did you know you could hack YouTube options using different URL parameters? It's a simple trick of writing query values in the video URL.
You can view and embed high quality videos, download YouTube videos, auto start playback from a part of the video, disable other YouTube related videos, and even bypass regional video restrictions!
Take a look at the whole YouTube hacks and URL tricks in the original post at makeuseof.com!
By the way, I wonder if this hack to bypass the regional restrictions would work for users in the United Kingdom as a trick to access high quality music videos, avoiding the UK YouTube music block.
Source: makeuseof.com YouTube URL tricks.