Save YouTube Video From Firefox cache (You have loaded a video and want to save it ?)

20 Jan

YouTube video you watch by entering its video URL. You can download these videos using IDM(internet download manager) but sometime we do watch that and after watching a half we think that we need to save it. If the video is fully loaded(light red seek line is full) .

You can click the IDM download icon to save it from cache (It will not download the file again just save it from cache in no time).

But what if you don’t have IDM in your computer or you haven’t loaded the full video and you want to save what ever loaded up to now. You can use Firefox’s local file cache to do it . Yes, it takes a little longer, but the plus is you don’t have to rely on another site just to download videos. Afterwards you can watch the video using the any player(must support flash video files, these days lot of players do support) of your choice.

Note before continuing: Yes, I understand there are applications like i mentioned above available that will do the same thing as what is instructed below, however it is better to do this manually rather than rely on an app which at some point will not work any longer.

It is little four step process.

… continue reading.


Posted by on January 20, 2011 in How to..., Technology


Tags: ,

10 responses to “Save YouTube Video From Firefox cache (You have loaded a video and want to save it ?)

  1. waleed

    July 19, 2011 at 9:59 pm

    I am using window 7, Firefox 5 and IDM 6.07, but I could not download large videos from cache, I can download from cache only small videos (less than 5MB).
    But While when I was using firefox 3.6 and IDM 5.19 I used to download any video from YouTube from cache?

  2. Romesh Malinga Perera

    July 20, 2011 at 7:41 am

    First of all I am currently using ones that you used long time ago (3.6 and IDM 5.19) with windows 7 (lately I started using Firefox 5). If you continue reading this article (You will be directed to another blog) (Or go to ) you will find command “about:cache” Try with this.
    Make sure cache is there using “about:cache”. Main problems that can effect saving a video with IDM are (In these cases IDM is not usable)
    1. Cache is downloaded as parts (Not as one)
    2. Cache is not complete (May be missing first few seconds or last few seconds)
    3. In Firefox 4 or 5 there is automatic cache management system, unlike in Firefox 3.x. So maybe your new cache is not enough for large videos. So try overriding the automatic cache settings (To do this you may go to options > Network > put a tic in “override automatic cache management”> set limit to 1 GB)
    4. IDM extension do not work in Firefox 5(in my case)

    • waleed

      July 20, 2011 at 2:24 pm

      Thanks for your reply Romesh.

      I put a tic in “override automatic cache management”, set limit to 1 GB, but still the same problem, the IDM extension that I am using is 7.3.2.

      I think the cause of the problem is firefox not IDM, Do you agree?

      • Romesh Malinga Perera

        July 21, 2011 at 11:45 am

        Ya, I think what you say is correct. As Asanka Shan tells is may be due to new cache structure of the Firefox. If that is the problem, IDM will surely send a small upgrade that will suit new Firefox. So I don’t think I have a answer to your problem right now, but conversation is open and any one who can got around this might answer.
        c u

  3. Asanka Shan Perera

    July 20, 2011 at 1:00 pm

    with the same configuration mentioned here, it possible to download the video with IDM but it will be new download, not from cache. It may due to change in the caching structure in firefox.

  4. deepak

    July 27, 2011 at 11:05 pm

    guys VideoCatchView is ur answer it work on firefox 5…
    jus type “VideoCatchView” in google n downlod the small program

    • Romesh Malinga Perera

      July 30, 2011 at 10:40 pm

      Thanks for the reply deepak, As I haven’t installed it I don’t know whether it’ll work or not. And I think that should be “VideoCacheView”.

  5. Romesh Malinga Perera

    July 30, 2011 at 10:42 pm


    VideoCacheView utility can help you to extract the video file from the cache and save it on your local disk for watching it in the future. VideoCacheView doesn’t require any installation process or additional DLL files. It automatically scans the entire cache of Internet Explorer and Mozilla-based Web browsers (Including Firefox) and finds all video files that are currently stored in it. It allows you to easily copy the cached video files into another folder for playing/watching them in the future. If you have a movie player that is configured to play FLV files, it also allows you to play the video directly from your browser’s cache.

    Read more: VideoCacheView – Free software downloads and software reviews – CNET

    I always recommend downloading from reliable sources.

  6. waleed

    August 5, 2011 at 6:52 pm

    If you are using Internet Explorer with IDM 6.07 you can download any video from cache. The new Firefox has a lot of problems.

  7. Romesh Malinga Perera

    February 6, 2012 at 9:04 pm

    This do not work anymore!!! thankx


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