Can someone help me download this from Youtube?

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Discussion Overview

The discussion centers around the challenges of downloading a specific lecture from YouTube, with participants sharing their experiences and suggestions regarding various methods and tools for downloading videos. The scope includes technical issues, software recommendations, and potential legal considerations related to copyright.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • Alan reports difficulty downloading a specific lecture despite being able to view it online, suggesting that some lectures may not be downloadable.
  • One participant warns that downloading videos may violate copyright law.
  • A participant shares a JavaScript method to download MP4 files from YouTube, detailing the steps to create a favorites shortcut for this purpose.
  • Another participant mentions the use of programs like HyperCam 2 and Fraps for capturing video content, noting that the JavaScript method allows for direct downloading of MP4 files.
  • Alan clarifies that the issue is not related to copyright, as most lectures in the series can be downloaded, and emphasizes a technical problem with this particular lecture.
  • A participant recommends a specific YouTube downloader and a converter for those needing to change video formats.

Areas of Agreement / Disagreement

Participants express differing views on the legality of downloading videos, with some suggesting methods to do so while others caution against potential copyright violations. The technical issues surrounding the specific lecture remain unresolved.

Contextual Notes

There are indications of technical limitations specific to certain lectures, and the discussion does not resolve the underlying reasons for these limitations. Participants rely on various software tools and methods, which may have varying degrees of effectiveness.

yungman
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I have problem downloading this particular lecture from Youtube. It claimed there is not video but if you just watch online, there is definitely video on it. I tried 2 different programs already. Seems like some of the lectures cannot be download. Please tell me how to do it.



Many thanks

Alan
 
Last edited by a moderator:
Computer science news on Phys.org
What you are asking may be in violation of copyright law.
 
Apparently youtube has released this javascript to download MP4 files:

javascript:if(document.location.href.match(/http:\/\/[a-zA-Z\.]*youtube\.com\/watch/)){document.location.href='http://www.youtube.com/get_video?fmt='+(isHDAvailable?'22':'18')+'&video_id='+swfArgs['video_id']+'&t='+swfArgs['t']}

The easiest way to use this is to create a new "favorites" shortcut called "get youtube video", then past in this javascript statement as the shortcut's URL. Then view the video and pause it (saves bandwidth), and then click the "get youtube video" you just created, and you'll be prompted to download "video.mp4". You can rename it during the save as or after the download.

Or simpler still do a web search for get youtube video, right click on the link to confirm that the URL is the javascript statement above, then left click on it (nothing happens since you're not on the youtube video page), then do an add to favorites.

You'll need Quicktime player or similar program to view a mp4 file, and quicktime pro or similar program to convert it to other video formats.

Copyrighted videos are not supposed to be uploaded to youtube.

Previously a person could use a program like HyperCam 2 to create a video from anything displayed on the desktop. Fraps does the same thing for directx video output, but doesn't work with all desktop windows. Now with the javascript feature, you can download the mp4 file as stored at youtube. The actual video display from youtube is flash video, but their source is mp4.
 
Last edited:
Jeff Reid said:
Apparently youtube has released this javascript to download MP4 files:

javascript:if(document.location.href.match(/http:\/\/[a-zA-Z\.]*youtube\.com\/watch/)){document.location.href='http://www.youtube.com/get_video?fmt='+(isHDAvailable?'22':'18')+'&video_id='+swfArgs['video_id']+'&t='+swfArgs['t']}

The easiest way to use this is to create a new "favorites" shortcut called "get youtube video", then past in this javascript statement as the shortcut's URL. Then view the video and pause it (saves bandwidth), and then click the "get youtube video" you just created, and you'll be prompted to download "video.mp4". You can rename it during the save as or after the download.

Or simpler still do a web search for get youtube video, right click on the link to confirm that the URL is the javascript statement above, then left click on it (nothing happens since you're not on the youtube video page), then do an add to favorites.

You'll need Quicktime player or similar program to view a mp4 file, and quicktime pro or similar program to convert it to other video formats.

Copyrighted videos are not supposed to be uploaded to youtube.

Previously a person could use a program like HyperCam 2 to create a video from anything displayed on the desktop. Fraps does the same thing for directx video output, but doesn't work with all desktop windows. Now with the javascript feature, you can download the mp4 file as stored at youtube. The actual video display from youtube is flash video, but their source is mp4.

Thanks for the reply.

This lecture is part of the 30+ lecture series on Electromatic class. I have no problem viewing this with my computer. But I cannot save it on my computer. Most of the other lectures in this series can be saved, just a few of them that cannot be saved on the computer. The program that I use is "Free YouTube Download 2.2.3.52".

With this Free Youtube download, all you have to do is paste the URL and it can save the video on the computer. It just don't work for this particular leason. As I said, I can save most of the leasons of this class, it is not about copy right or not supposed to be saved. Something is wrong technically that I cannot save it on my computer and I need help.

Thanks
 

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