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Title:

YouTube Highest Possible Video Quality

Date Added:

2009-04-15 11:05:56

Installs:

1925

Description:

*UPDATED April 15, 2009*

I have rewrote the script and added some new features/changes:

-You can now enable/disable the changing of the video quality format by setting the EnableQualityChange variable to true or false.

-You can now enable/disable the ability to add a link to allow the downloading of the video being watched. Set the EnableVideoDownloading variable to true or false to do so. The link will appear above the title of the video. Whichever format the video is being watched at is what will be downloaded. If you're watching an HD (&fmt=22 or &hd=1) video, the HD mp4 version will be downloaded. If you're watching a higher quality flv (&fmt=35) video, the higher quality flv version will be downloaded. All other formats will download the higher quality mp4 version.

-If the UseHD variable is set to true, the script will no longer attempt to change the quality of videos with '&hd=1' in the URL since they will automatically play videos in HD. These videos are found in the HD section of YouTube or when you filter search results to only show HD videos.

*DESCRIPTION*

This script automatically detects and plays the highest quality video available when watching a video on YouTube. The user can select which quality to play by setting the UseHD and UseHQflv variables in the script to either true or false. It can also optionally add a link to download the video that is being watched.

Preview of YouTube Highest Possible Video Quality

View script source of YouTube Highest Possible Video Quality

// ==UserScript==
// @name            YouTube Highest Possible Video Quality
// @description     Detects and shows the highest quality video available on YouTube.  It can also add a link to download a video that is being watched.
// @author          HoppyToad75	
// @version         1.1
// @include         *youtube.com/*v=*
// ==/UserScript==

// Uses modified code from the "YouTubeHD" script by Yansky and the "Download Video From YouTube" script by the IE7pro Team.

/*
The following four variables can be modifed by the user to change the way the script works.  Set each one to true or false.  Be sure to use lower case letters since javascript is case sensitive and also be sure to leave the semicolon (;) at the end of the line.  Here's a description of what these variables do:

EnableQualityChange - set this to true to show videos in a higher quality format if available.  Set it to false to allow YouTube to determine which format is shown.

EnableVideoDownloading - set this to true to enable a link to download the video that is currently being watched.  Set it to false to not allow downloading of videos.

UseHD - set this to true to watch videos in 720p HD if available.  Set it to false to watch videos in one of the other formats.

UseHQflv - set this to true to watch videos in the higher quality flv format if available.  Set it to false to watch videos in mp4 format.

Not all videos are available in these formats and in that case will default to the mp4 format.  In some rare instances older videos or very poorly encoded videos may not even be available in that format and will then play in a lower quality flv format.
*/

// ONLY MODIFY THE FOLLOWING FOUR VARIABLES!

var EnableQualityChange = true;
var EnableVideoDownloading = true;    
var UseHD = true;
var UseHQflv = true;

// ONLY MODIFY THE ABOVE FOUR VARIABLES!

var HDformat = 22,
    HQflv = 35,
    mp4Format = 18,        
    EncodedFormat = swfArgs.fmt_map.match(/\d+/),
    SelectedFormat;

if (EnableQualityChange)
{
	ChangeQuality();
}

if (EnableVideoDownloading)
{
	CreateDownloadLink();
}

function ChangeQuality()
{
	var dURL = document.URL,
	    newURL;
/*
The following checks the format value found in the video's web page against the conditions set by the user.  Depending on what the format value is and whether the user set the UseHD and UseHQflv variables to true or false determines which video quality is played
*/
	
	if (UseHD && EncodedFormat == HDformat)
	{
		if (dURL.match('&hd=1'))
		{
			return;  // If '&hd=1' is in the URL it will display in HD automatically so there's no need to change format.
		}
		else
		{
			SelectedFormat = SetupFormat(HDformat);
		}
	}
	else if (UseHQflv)
	{
		if (EncodedFormat == HQflv || EncodedFormat == HDformat)
		{
			SelectedFormat = SetupFormat(HQflv);
		}
		else
		{
			SelectedFormat = SetupFormat(mp4Format);
		}
	}
	else
	{
		SelectedFormat = SetupFormat(mp4Format);
	}
	
	if (!dURL.match(SelectedFormat))
	{		
		if (dURL.match(/&fmt=\d+/gi))
		{
			newURL = dURL.replace(/&fmt=\d+/gi, SelectedFormat);
		}
		else
		{
			newURL = dURL + SelectedFormat;
		}
		window.location.replace(newURL);
	}
}

function CreateDownloadLink()
{

/*
The following generates a link that will allow the user to download the video that is currently being watched.  The link will be placed above the title of the video.  The link will download the format that is currently being watched so it may or may not be the best quality available.
*/

	if (EncodedFormat != HDformat && EncodedFormat != HQflv) 
	{                        
		SelectedFormat = SetupFormat(mp4Format);
	}
	else
	{
		SelectedFormat = SetupFormat(EncodedFormat);
	}
	
	var DownloadLink = 'http://youtube.com/get_video?video_id=' + pageVideoId + '&t=' + swfArgs.t + SelectedFormat, 
	    VideoTitleElem = document.getElementById('watch-vid-title');

	if(VideoTitleElem)
	{
	var div = document.createElement('div');
	VideoTitleElem.parentNode.insertBefore(div, VideoTitleElem);
	div.innerHTML = '<style>#download{text-align:left;margin: 0 10px 0 20px;}.downloadImg{border: 0;float:left;}h2.downloadVid{font-size: 22px;display:inline;}</style><div id="download"><a href="'+DownloadLink+'"><img src="data:image/gif;base64,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" class="downloadImg"><span class="downloadVid">Download Video</span></a></b></div>';	
	}
}

function SetupFormat(Format)
{
	return '&fmt=' + Format;  // Adds '&fmt=' before the format value
}

Comment of YouTube Highest Possible Video Quality

	[2009-04-10 04:32:14]Protector0ne says:
	Why wouldn't you just login to YouTube and check "I have a fast connection. Always play higher-quality video when it's available." in the Playback Setup settings in your account?

[2009-04-10 07:30:03]HoppyToad75 says:

Choosing that option will only play the higher quality flv version of a video if it's available. If you want to watch a video that has an HD 720p version available you still have to click the "HD" button. This script automatically switches it to HD when it's available (and the UseHD variable is set to true). Also not every video has a higher quality flv version but they do have a higher quality mp4 version. The only way to get the mp4 version to play is to add &fmt=18 to the video's URL which the script automatically does if there's no HD or higher quality flv version available.

	[2009-04-11 05:09:36]Protector0ne says:
	I'm pretty sure that setting always forces the highest available quality on you. I've never had to click HD to get HD since checking it.

[2009-04-11 07:56:55]HoppyToad75 says:

After testing it some more, the only time I saw YouTube automatically play an HD video in HD was when watching videos in the HD section of the site. And it will play it in HD in that section even if the "I have a slow connection. Never play higher-quality video." option is selected. I tried watching HD videos in my subscriptions and from using the search and none of them would play the HD version automatically even when I had the "Always play higher-quality video when it's available" option selected. It would only play the higher quality flv version until I clicked the HD button.

	[2009-04-12 04:10:44]Protector0ne says:
	I just tried again, and every video that had HD played in HD from the get-go. And I didn't access them from the HD-only section. I don't understand why it won't work for you.

	[2009-04-13 10:42:10]HoppyToad75 says:
	I don't understand either. I even tried disabling every add-on except for Flash in case something might have been interfering with it but it still wouldn't play in HD until I clicked the HD button. It does the same thing on my brother's computer as well.

[2009-04-13 11:17:01]HoppyToad75 says:

Just did some more testing. If I do a video search and then click the "Type" link and then "HD" to show only HD videos then it will automatically play the videos in HD. However if I don't filter out the search results and click on a video with the HD icon it will not play in HD until I click the HD button. I also tried playing HD videos in the "Most Popular", "Most Viewed", and "Most Discussed" areas and they would not play in HD until I clicked the HD button.

	[2009-04-14 07:18:53]Protector0ne says:
	Gaaah. I think the setting is now broken altogether. It doesn't work for me anymore either. :( Also, all videos watched in HD are now automatically forced to the 'theater mode'. If they don't revert back soon, I'll have to start using your script after all! :D

	[2009-06-17 23:00:07]djfye says:
	Is there anyway somebody would be able to edit the script for me so the "download video" link is in the same spot as in this one?

	[2009-06-17 23:00:27]djfye says:
	-_- http://iescripts.org/view-scripts-3p1.htm forgot the link sorry

	[2009-06-25 20:13:49]HoppyToad75 says:
	Open the script in notepad and replace "watch-video-details-inner" with "watch-vid-title"

	[2009-07-02 11:06:14]djfye says:
	ah yes well thanks for that

	[2009-08-08 18:22:43]taricom says:
	welcome to my web www.taricom.com

	[2009-10-14 21:01:20]TekFan says:
	Thanks for the script! I have set YouTube to always play videos in HQ, but wanted an option to also play videos in HD, and your script is just the ticket! Thanks! :-)

	[2009-10-21 19:44:44]TekFan says:
	Bummer. This script stopped working for me. I tried reinstalling it and nothing. Can you please look into it? I really liked it!

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Name:	HoppyToad75
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