With an author that is constantly keeping up with YouTube developers screwing around with their code. And still it works perfectly fine.

Thank you very much !

This is the most customizable and still fastest youtube HD script I've seen!

// Jeroen

I generally dislike how YouTube runs things these days, but alas, so many people use it that there's not much other choice. Thankfully, this script is here to make watching videos on YouTube so much nicer.

Some things just seem like they should be built right in, while others are just nice functionality. All in all, this is a definite must-have script. Plus, even with the constant changes on YouTube, the author is excellent at keeping it up to date, ensuring you don't have to suffer a broken experience for long at all.

I have no idea what to say but I would recommend this to anyone that loves youtube and can watch HD (people with good net) thanks for this script + updates are good ! :D 5*'s

It's unbelievable how useful this script is. Works beautifully, and updates often enough to stay current with any updates yt may have. YouTube HD Ultimate CERTAINLY has the most features compared to any other script, so this is the only one you'll need.
This gives you all sorts of video-size controls, HD controls, playback and color controls, video downloading options, and several extras like Cinema mode.
If you've ever watched a video on youtube, you need this script. You'll never want to go back to the default youtube.
Can't live without this!

This is a very well-designed script, it features easy to use download links, and a dimmer option for all videos, but what stands out the most is it's additional drop-down menu. When this script is active, an extra link appears with the links in the top right corner labeled "Show Ultimate Options", this brings out a menu that lets you change the effects the script have on YouTube, you can change the color of the video player, you can activate 720p video for videos that support it, you can loop the video instead of showing related videos at the end, you can even make it so it automatically collapses all of the tabs and/or turns annotations off. The only real downside to this script is the click video to play option, this makes it so that every time you click the video in any spot, it has the same effect as hitting the play/pause button, this doesn't seem like much of a problem until you try to search through related videos, and instead of sifting through to the next set of videos when you click on the arrows on the side, it restarts the video. All in all, excellent script, I recommend it.

I've been using YousableTubeFix.. which is a fantastic script for improving Youtube. I just happened to see this script on the front page and decided to test out the author's claims of being the best of the best.

I tried it out and compared it to YousableTubeFix (YTF) on an HD video. It was quite good, but I found that YTF is still better when used along with Youtube "Lights Out" script.

HD Ultimate felt a little glitchy for me. The framerate on HD videos were low with the script until I went full-screen (this problem doesn't occur with YTF). The page didn't scroll as smoothly as it does with YTF when video is playing. The page layout also is not as well-designed as YTF is.

YTF also allows for instant user-resize on the fly, while HD Ultimate only has a preset video size. The expand video to browser (which is enabled by DEFAULT) is very buggy. As soon as I resize my browser, even an inch, it freezes up briefly, making Firefox 3.5 unresponsive, before the video player catches up and resizes. It also ate up CPU resources making everything slow.

It also doesn't have the element hiding functionality of YTF.

Overall, this is a good script, but it is not the best as the author claims. The YTF script wins the title for now.

--Please don't take my review as an attack, I only mean to provide constructive criticism.--

Thts all i have to say, a well designed script......cheers Goolcharran

i went from Yousabletubefix to this and it is in my opinion better and faster updated so far.

thankx to the people who made this script possible! ;)

This script is nothing short of perfect, it does everything i could want and more, and i have recommended it to all of my friends who watch youtube videos as much as i do.