User:Fleetwood/Video download extensions

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Adobe's Flash player plugin (nonfree) is as of --Fleetwood (talk) 18:01, 10 June 2014 (UTC)

That one is for systems running the Linux kernel.

And for use in a web browser that uses the Netscape Plugin architecture (NAPI NPAPI) (can include (most/all builds of) Chromium?)

In Slackel (based on Salix) the binary executable library of the FlashPlugin is located in:


Simply find a member of the .tar.gz archive/package called "" and extract (copy) it to there.

It may be necessary to have the Flash browser plugin installed to view (and make use of extraction/downloading) tools, that are mentioned below to watch internet video (whether files or streams).

XUL extensions

These extensions can be added to Mozilla software such as Firefox. Some may also work with SeaMonkey.

These following two can be thought of as alternatives to Video Download Helper. One of these will (sometimes, under certain conditions, in certain cases) identify and allow downloading of the .swf files, but not the video files, or vice-vers. Have you ever wanted to save a (local(ly-stored)) copy of (capture) a video that is playing in your web browser?

A nice range of tools are at your disposal, ranging from: browser extensions ; StreamTransport for Windows ; as well as rtmpdump and other command-line tools.


See the "Background" (child page) for an explanation of how video is implemented by Macromedia/Adobe's (Shockwave-)Flash stack/platform of technologies. That page provides important information that will help you better understand the technical underpinnings/workings behind flash video that is embedded in a webpage (and viewed by a web browser).

web Inspector tool

The Developer Tools that are bundled with web browsers (such as Chrome's Inspector) can be helpful in detecting any video files that are transferred from the host/server to the client/web-browser. In particular, use the Network activity pane(l)/window/box: this logs transfer events that take place between the server/host and client (browser/visitor). For Mozilla-based browsers, Firefox has its own built-in tools (which are analogous to the one built into Chrome/Chromium). Also, there is the Firebug extension.

copy as curl

WebKit/Blink!-based Inspector (Developer) tools (that are bundled with Chrome and Safari web browsers) offer an option to "copy as cURL". To use this, go to the "Network" of the Inspector/ Developer Tool and find a video file among the list. Right-click on its entry among the list of transfer events. Among the items presented by the context menu, choose "copy as cURL". This will copy, to the clipboard, a fully-formed cURL command line that replicates (including all HTTP headers) the same request that the GUI browser made to the server to first obtain (download) that video file. Open a "terminal" window and paste that command line into the terminal (command-line interpreter / console). Running cURL with that command line that the Inspector tool provided, will simulate as if that request originated from the full graphical web browser (user agent). This is a thorough simulation that includes replicating the browsing context (referrer URLs, e-tags, tokens, etc.). Again, though, this will not (work) be much use for YouTube videos.

tips, organized by provider/website


Look for a file with a suffix/extension of ".bin" in its name, NOT / as opposed to what you'd (otherwise) expect, which is: .flv or .mp4 or even .webm maybe.


Like Wistia, the video is embedded in the (parent) webpage as an iframe (inline or embedded frame (a webpage within a webpage))

however, accessing that URL of the iframed-webpage containing the vimeo posting/video requires a ?referrer-URL? -- otherwise access may be denied. Plus, the video file itself has a query string unique ID or key of some sort dynamically generated by the server in response to a request for the video. Trying to request the video file's name with the "?" and what follows after the .mp4 will be denied access by Vimeo's server(s).


native-apps / web Proxies provide (all?) the same functionality that the "Network" feature of a web browser's Developer/Inspector Tool provides. It allows the examination of all transfers (traffic) between client and server in an HTTP(S) connection.

There is a .NET app for Windows called Fiddler2. See wikipedia:Fiddler (software) ; also, the official homepage.

There are numerous open-source apps such as HTTP Ripper by Jonas Wagner. See its homepage.

Note however, that all the above tools only are capable of detecting transfers/activity that take place using the HTTP protocol. Any video that is sent over another protocol, such as RTMP, will not be detected by these tools/methods/means.
Also, those tools will not be able to identify a .mp4 (or webm or .flv) file that originates from YouTube (even though those transfers do take place in the HTTP application transport layer, and not R.T.M.P.).


There are several websites on the internet that make it easy to download the actual video files that play from YouTube (and possibly other websites/domains as well, such as Vimeo, and DailyMotion).

N.B. Warning: Please be wary of visiting these websites with a computer that runs Microsoft Windows. Who knows what adware, spyware, or other malicious and questionable software may infect you.



It offers alternate domain names:


?This doesn't use any Java, right ?

I discovered this website because a FF extension that I downloaded, [1], which provides a button (when it detects a yt video) that , when clicked, simply opens up an AdFly URL (like, for example:

browser extensions

The makers of SaveFrom offer official web-browser extensions, to help use their website.

There are extensions available for all of the major modern web browsers:

see all-available, including:

user tools PHP

Save Media

this one is less trust-worthy. Its usage requires a Java applet to run within your web browser. It advertises: Try adding "save" to the left of any YouTube video URL (e.g. --> or

The website instructs: allow Java plugin to run in browser, instructional screen shot/capture

XUL extensions

These extensions can be added to Mozilla software such as Firefox. Some may also work with SeaMonkey.

N.B.!: Often, YouTube makes changes that renders some of these browser extensions useless for downloading YouTube videos. This is undoubtedly an effort by YouTube to enforce their end-user terms-of-service that says, among other conditions, that video files hosted by YT should not be downloaded!


only works for YouTube videos, not other videos (from DailyMotion or any flash animation)

InBasic offers a Mozilla Firefox browser extension called "Media Downloader" which, according to [2] "contains a pure JavaScript library to extract the ORIGINAL audio file out of FLV video format also in integration with FFmpeg it converts audio and video files to MP3 format. "

This great wonderfully-designed add-on: "Youtube Video and Audio Downloader" No Restart required to install!

add latest stable edition to Firefox

0.3.5 is the latest

It offers a nice Metro-style UI look. It offers downloads of "true" HD, including versions of the video that have no audio streams. <-- Does anyone understand this? Fleetwood (talk) 22:29, February 25, 2014 (UTC)

Also, see the developer's (maker's/author's) profile on Mozilla Add-ons directory, which lists the developer's homepage (website) as: Also: official homepage on GitHub

YouTube Downloader Lite

on get the latest, 0.1.2 from 30 May 2014.

Mentions support for DASH video (on yt).

Developers: Sarah Avilov

Download Flash and Video

This one can (in contrast with the ones previously mentioned above) download all sorts of videos, including YouTube (even when no FlashPlugin is present (using HTML5 video) as well as any video file (.mp4 or .flv) sent through played with a flash animation .swf player).

Download Flash and Video Get the latest .xpi here, which is (currently) 1.56.

Also see their developer profile on Mozilla. The developer has its own (official) website: Official changelog: versions downloads.

In my experience, this particular extension was certain (could be relied upon) to identify and allow the downloading of the .swf files, but not always/necessarily the video files (.mp4, .webm, .flv)! (under certain conditions / in certain particular cases)

Yes, this add-on/extension is good at/for identifying and downloading (any/all) embedded .swf (Shockwave-flash) animation files (usually media players (that provide transport/playback controls)) that are embedded in a currently-visited (viewable) webpage (but not the actual multimedia content (media streams)).

To use it, make sure that the Add-on/extensions toolbar is made visible in Firefox. A keyboard shortcut for doing this is Ctrl + / (forward slash).

The little (down-pointing arrow) icon should be visible on the right edge (end) of the add-ons toolbar. In other words, look for an icon in the bottom-right of your Firefox browser window. Once Firefox loads a webpage that has any detectable .swf embedded flash animations (whether ads or actual media/movie players), that icon will become red-coloured, which indicates that it recognised files that it can offer to download. Clicking on that down-pointing arrow button will present a list of any .swf files that it detected. However, it has not detected video files that play through flash animations. In order for the video file to be downloaded, it is necessary to first click play (in the .swf animation that serves as a player / transport control for the video playback) to start playing any flash video, and THEN, the video files should be visible , listed by this extension.


Flash Video Downloader from FVD (username: pos1t1ve on the Mozilla repo). Download the latest .xpi which is now 5.9.1 (which was released 1 May 2014). I am not able to right-click (get a context menu) on a link to any video that it detects and allows to be downloaded and copy URL of target.

Windows build from

This extension is also featured on "Flash Video Downloader Youtube Downloader for Firefox"

one reviewer, brianc123981 wrote: "full of spyware" (on 2011 apr 9).
one reviewer (CyberknightMK) on Mozilla's official extensions/add-ons website for Firefox wrote about spyware, as well: "Surf Canyon spyware " [3].
Now CNET's offers a direct URL to the XUL .xpi package from the maker's official website which is older than what Mozilla (Firefox)'s repository of XUL .xpi files offers (5.9.1). It's dated: "2014-03-16 06:26:17" (UTC/GMT) -- Version 5.8.5 is not listed among versions on Mozilla's (changelog / revision history of the extension).

I examined the contents of the actual .xpi file (5.8.5) (which is a .ZIP (PKzip WinZIP container/archive/package file), essentially)
and I see, within its folder/directory tree/structure, a folder: "modules/ffmpeg/" which contains Windows (win32) -only compiled binaries: .dlls and an .exe. However this is true only for the "FFmpeg" component of this software, it seems. The rest of the contents of the package/archive/extension should work with any Firefox browser, regardless of which OS (underlying platform) that it is running on (environment that the Firefox browser is running within).

Video Download Helper

official homepage (website)

Firefox extension page on

I find that one to be confusing. It's hard to tell which detected video files are relevant to the current webpage you're on (as opposed to previous browing history and/or neighboring browsing windows or tabs) and which is up-to-date or old (or started playback partway into the file). The UI (UX) is not as clear as the others I mention here. --Fleetwood (talk) 12:34, 14 June 2014 (UTC)


The FlashGot extension features FlashGot Media section/feature/aspect.

on InformAction, also makes NoScript, another popular and featured FF add-on. flashgot_mass_downloader- (XPI package/installer)

Graugon also featured XUL XPIs like Firefox Video Download Helper

SoftPedia offers a more up-to-date (in fact, perfectly up-to-date from upstream developer, latest stable release): [4] changelog flashgot-


UnPlug saves video and audio which is embedded on a webpage. This extension is provided by h2g2bob, who has a website of his own. Download the latest verson, which currently stands at 2.056 ; previously: 2.054. Is this based upon a PHP script?

Adobe HDS

If, the browser's web inspector (web Debugger/Developer tool) (see above) lists files that bear a filename suffix/extension of ".f4f", which are between 1 and 2 MiBs in size -- that is a sign that ?DASH? Adobe HDS technology is being used for serving the video that is playing. These .f4f files are NOT playable (in VLC, Mplayer, etc.), as they are. These files need to be converted. Fortunately, there is a tool for that ...

PHP script for [5]

Additionally, the developer (K.S.V.) has benevolently also authored and released a wonderful Firefox (XUL) extension called "HDS Link Detector." This extension helps with the use of his PHP script for downloading and converting video that is embedded in a webpage using Adobe's H.D.S. technology. It detects any HDS (.f4f) video that is on the webpage and formulates a command line that can be copied and pasted into the command-line invocation of the PHP script. This is much easier than trying to figure out and plug in the right arguments / values (switches) when formulating the PHP script's command line.

This extension was discovered when reading this thread by [6].

HDS is Adobe's newer technology for deploying video on the web. Is it the same as DASH wikipedia:Dynamic Adaptive Streaming over HTTP ?


Additional XUL .xpis can be found via this search for "video download" in the official Mozilla extensions repository website.


Google's Chrome browser does not allow any web browser extension that enables the direct downloading (capture) of the video files (.mp4, .flv, .webm) from YouTube (video postings). This is because doing so (by the end-user) violates YouTube's Terms of Service.

Find and install extensions for Chrome-based web-browsers from The "Chrome Store" (official online repository of browser extensions).

You can't use this to install (add) Chrome browser extensions to the Opera (15+) browser (unless the user-agent string of your Opera browser is spoofed to fool Google's servers into thinking that the browser that you are using is in fact Chromium-based.)


FVD offers an extension for the Firefox browser, as well as one for Chrome.

mirror of .crx download on SoftPedia ver. 5.6.5. [7] developer's profile page on Softpedia [8]

well actually

"Video Download" "from Alparslan" details

related .crx extensions in the Extensions "store"


In 2013, Opera switched from using their own in-house, closed-source technologies like Presto (layout/rendering engine) to basing the development of their web browser on the open-source Chromium codebase.

Opera maintains their own website (online repository) of web browser extensions.

search for "youtube download"

How many of those browser extensions (Only?) work for (or haven't been updated since the Presto-based generation 12) Opera browser (12, before the move to Chromium-base)? Fleetwood (talk) 17:46, March 12, 2014 (UTC)

one, in particular:

"YouTube Video Downloader" by developer Sarah Avilov who also has a profile for Mozilla Firefox extensions / add-ons.


Torch is a web browser that is derived from the open-source codebase of the Chromium project. In other words, it's mostly the same as Google's Chrome browser. It has many nice features built-in, including a BitTorrent client, as well as "Download Media" [9]. When a page is loaded in the Torch browser that has video playing (whether through the Adobe Flash plugin (or not?)) and it detects this, the "Download Media" button on the toolbar will come to colour (life) and activate and allow the video file to be downloaded. I don't see options to choose which video file to download from YouTube postings -- only an .mp4 file seems to be

This browser is only available for Windows, right? Fleetwood (talk) 16:41, March 12, 2014 (UTC)


"Avant Browser" (not spelled with an 'e': "Avante")

AvantBrowser features/has a "Video Sniffer" tool/feature/capability built-in/bundled. "Avant Browser can detect the videos in the web page you are browsing, and let you download them with just one click." includes md5 checksum/hash/digest, and links to older releases (builds / installation packages)

maker: Avant Force official homepage ; lists their apps/products

including "Avant Browser Ultimate Portable 2014 Build 2"

another mirror:

Official download page mentions that the main basic release/edition/branch/version uses I.E.'s Trident engine, but the "Ultimate" edition actually uses 3: Trident, Gecko (Mozilla Firefox), and Blink! (Chromium). hmm, is that a good approach?

Avant Downloader

Off-shot (app)? (separate from the web browser?)

also features the Video Sniffer

"Inspired by FlashGot, not only does Avant Downloader come with full-featured built-in Download Manager / Accelerator, but also it gives users options to utilized other downloaders designed for IE/Firefox: BitComet, Internet Download Manager, Download Accelerator Plus, Download Master, FlashGet, Free Download Manager, Get Right, GigaGet, HiDownload, InstantGet, Internet Download Accelerator, Mass Downloader, Net Ants, NetTransport, Orbit Downloader, Star Downloader, Thunder Downloader, WellGet, WestByte etc."

see "Download Managers"


Free open-source software:

This software does not require Adobe flash to be running in the browser. It is command line, which offers all of the benefits of cmdln, as opposed to GUI, including piping, scripting, etc. These are especially useful with GNU/Linux distros (open-source operating systems, Unix-like). The following programs can be found in your distros software repositories.




man page (manual, or online documentation reference, includes description of each switch)


more resources

homepage on SourceForge includes a library libQuvi

on Arch wiki

available for Debian Wheezy (current stable release/branch of the Debian GNU/Linux distro)



available for Debian Wheezy (current stable release/branch of the Debian GNU/Linux distro)

Does cclive depend upon quvi to run? "clive Doesn't work with new quvi" bug report for ArchLinux package.


"yt-downloader" is a Python script by Ricardo Garcia Gonzalez. It works for videos on YouTube and many other websites, as well.

official page on GitHub, download it.

is available in the Sid branch of Debian (and not the current Stable, Wheezy, nor testing: Jessie) (I guess, because it is so new "(2013.12.04-1)".)

guide to running on Windows.

not HTTP

If the video content is being transmitted over the HTTP protocol, one of the above browser extensions is likely to succeed in identifying (and allowing to save/capture) the video content (file). For the most part, those web browser extensions will only work if the Adobe Flash plugin is installed and the video is ?streaming? (playing) through it. This means that playback has started and has been triggered by clicking the play button on the .swf flash animation.

Additionally, FVD and Download Flash and Video will work for YouTube video postings even when no Adobe FlashPlugin is present.


Real-Time Media Protocol video that uses Adobe Flash technology sends the video content, not over HTTP, but instead over another port, using wikipedia:Real Time Messaging Protocol. (N.B. Don't confuse RTMP with RTSP which is a Real Media technology.).


There is an open-source software package called rtmpdump, which is actually a suite of several software apps (tools/utilities) including the namesake, as well as rtmpsuck.

Hint: search for (query:) rtmpsuck iptables. (another hint) Then run Rtmpdump (executable/program/utility/app/command).
windows build

"RTMPDump Windows Builds" (first posting on a thread on a discussion board (forum)) by Zeranoe » Thu Feb 28, 2013 5:57 am


For the Microsoft Windows platform: /RTMP#Stream Transport.

more Windows software from

See Also

User:Fleetwood/Print extensions for FF

Firefox Add-ons


wikipedia: Streaming media#Protocols

In WikiPedia's article on "HDS", under its heading, <h1>"Technology"</h1>, there is mention of "HTTP Dynamic Streaming, Adobe's HTTP Live Streaming", yet there is no article to link to, yet.