High quality videos and YouTube videos are usually considered two separate entities. YouTube is notorious for its low-quality videos, even then it is the world’s most popular video streaming and video sharing website.
Google OS recently discovered a trick that indicates that Google might be secretly working on improving the quality of some YouTube videos.
The trick is to append &fmt=18 at the end of URL of the YouTube video you are watching. This will make YouTube download a high-quality video version of that particular video. The high quality video version will of course be bigger in size and therefore will take more time to load. It shall be encoded at 480×360 with an MP4 format. This trick will not work on all videos but for some it works like a charm.
Lets say you have a YouTube video with the following URL
Now to watch a high quality version of the same YouTube, you will use the link below
You will definitely feel the difference. You can also use a Greasemonkey script to search high quality versions of YouTube videos for you.