How do we download a blob url video

Question

I want to download a video whose url is not simple mp4 file  but its url is blob type for eg     lt video id  playerVideo  width  450px  autoplay  autoplay  height  338px          style  height 100  width 100    class  mejs-rai-e         src  blob http   www example com d70a74e1-0324-4b9f-bad4-84e3036ad354  gt   lt  video gt    Is there any chrome extension or software which can be used to download the playing video

User · Answer

Use the HLS Downloader Google Chrome extension to get the link to the M3U playlist. Its icon in the browser bar will show the number of playlists found on the current webpage. Clicking on the icon you can then see a list of the playlist link and then use the copy button next to a link to copy it.

Then use the youtube-dl program to download the file.

youtube-dl --all-subs -f mp4 -o "file-name-to-save-as.mp4" "https://link-from-Google_Chrome-HLS_Downloader_extension"

Explanation of command line options:

-f mp4 = Output format mp4
--all-subs = Download all subtitles
-o "file-name-to-save-as.mp4" = Name of the file to save the video as.
"https://link-from-Google_Chrome-HLS_Downloader_extension" = This is the link to the playlist you copied from the HLS Downloader extension.

If you use the same configuration options all the time for youtube-dl you may want to take a look at the configuration options for youtube-dl, as this can save you a lot of typing.

The HLS Downloader extension is free and open source under the MIT license if you want to see the code it can be found on its project page on Github.

User · Answer

Find the playlist manifest with the developer tools network tab  There is always one  as that s how it works  It might have a m3u8 extension that you can type into the Filter   The youtube-dl tool can also find the m3u8 tool automatically some time give it direct link to the webpage where the video is being displayed    Give it to the youtube-dl tool  Download    It can download much more than just YouTube  It ll auto-download each segment then combine everything with FFmpeg then discard the parts  There is a good chance it supports the site you want to download from natively  and you don t even need to do step  1   If you find a site that is stubborn and you run into 403 errors    Telerik Fiddler to the rescue  It can catch and save anything transmitted  such as the video file  as it acts as a local proxy  Everything you see hear can be downloaded  unless it s DRM content like Spotify    Note  in windows  you can use youtube-dl exe using  quot Command Prompt quot  or creating a batch file  i e d  youtube-dl exe https   www youtube com watch v gbdFOwKHil0 Thanks

User · Answer

There are a variety of ways to get the URL  m3u8 either by viewing the source of a page  looking at the Network tab in the Developer Tools in Chrome  or using a plugin such as HDL HLS Video Downloader   With the  m3u8 URL in hand you can then use ffmpeg to download the video to a file like so     ffmpeg -i  https   url to some file m3u8  -bsf a aac adtstoasc       -vcodec copy -c copy -crf 50 file mp4

User · Answer

I posted this already at some other websites and though why not share it with guys gals at stackoverflow    Install the Video DownloadHelper extension on Firefox browser  With DownloadHelper activated  navigate to the webpage containing the video that you want to download  Once the video is streaming  click on the DownloadHelper  icon  It will give you a list of all file formats available on the current video  Scroll onto the file format that you wish to download On the right hand side  you will see an arrow Click on that arrow to get more information regarding the current video and the selected format From the displayed window at the end of that arrow  scroll down and select  Details  You now have all the details concerning the current video and the selected format  It is something like this    Hit Details   needsAggregate   needsCoapp actions  bitrate chunked  descrPrefix durationFloat extension frameId  fromCache group hls id isPrivate length masterManifest mediaManifest originalId referrer size status title topUrl url urlFilename   Now  look at the specifics of the referrer in that Hit Details  That s the url you want  Copy it and paste on your favorite downloader

User · Answer

This is how I manage to  download  it    Use inspect-element to identify the URL of the M3U playlist file Download the M3U file Use VLC to read the M3U file  stream and convert the video to MP4   In Firefox the M3U file appeared as of type application vnd apple mpegurl    The contents of the M3U file would look like     Open VLC medial player and use the Media    Convert option  Use your  saved  M3U file as the source

User · Answer

If the blob is instantiated with data from an F4M manifest  check the Network Tab in Chrome s Developer Tools   you can download the video file using the php script posted here  https   n1njahacks wordpress com 2015 01 29 how-to-save-hds-flash-streams-from-any-web-page   By putting     if   manifest             manifest     GET  manifest      before     if   manifest    you could even run it on a webserver  using requests with the query string   manifest  manifest url    Note that you ll probably want to use an FTP client to retrieve the downloaded video file and clean up after the script  it leaves all the downloaded video parts

User · Answer

The process can differ depending on where and how the video is being hosted  Knowing that can help to answer the question in more detail   As an example  this is how you can download videos with blob links on Vimeo    View the source code of the video player iframe Search for mp4 Copy link with token query Download before token expires   Source  amp  step-by-step instructions here

User · Answer

If you can NOT find the  m3u8 file you will need to do a couple of steps different   1  Go to the network tab and sort by Media     2  You will see something here and select the first item  In my example  it s an mpd file  then copy the Request URL   3  Next  download the file using your favorite command line tool using the URL from step 2   youtube-dl -f bestvideo bestaudio https   url com destination stream mpd   4  Depending on the encoding you might have to join the audio and video files together but this will depend on a video by video case

User · Answer

You can simply right-click and save the blob as mp4    When I was playing around with browser based video audio recording the output blob was available to download directly

User · Answer

I just came up with a general solution  which should work on most websites  I tried this on Chrome only  but this method should work with any other browser  though  as Dev Tools are pretty much the same in them all   Steps    Open the browser s Dev Tools  usually F12  or Ctrl-Shift-I  or right-click and then Inspect in the popup menu  on the page with the video you are interested in  Go to Network tab and then reload the page  The tab will get populated with a list of requests  may be up to a hundred of them or even more   Search through the names of requests and find the request with  m3u8 extension  There may be many of them  but most likely the first you find is the one you are looking for  It may have any name  e g  playlist m3u8  Open the request and under Headers subsection you will see request s full URL in Request URL field  Copy it   Extract the video from m3u8  There are many ways to do it  I ll give you those I tried  but you can google more by  download video from m3u8     Option 1  If you have VLC player installed  feed the URL to VLC using  Open Network Stream     menu option  I m not going to go into details on this part here  there are a number of comprehensive guides in many places  for example  here  If the page doesn t work  you can always google another one by  vlc download online video   Option 2  If you are more into command line  use FFMPEG or your own script  as directed in this SuperUser question

[video] How do we download a blob url video

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