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This is a video which I am viewing via an extension installed via Google Chrome store. When I open the video and inspect element, it has the following tag

<video controls="" preload="auto" src="blob:chrome-extension://olkpikmlhoaojbbmmpejnimiglejmboe/76df79f4-8d46-40e0-842f-6594a0b2c770" autoplay=""></video>

How do I download this video as mp4 or something else? There is no download button.

Venkat Krishnan
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  • Check the link below, it may help you out. https://stackoverflow.com/questions/42901942/how-do-we-download-a-blob-url-video – Yaswanth Gupta Dec 01 '18 at 07:53
  • @YaswanthGupta no that works only for blobs from websites. This is a blob via an extension, meaning there is no external link. – Venkat Krishnan Dec 02 '18 at 07:03
  • @wOxxOm it's called "Downloader for Instagram™ (+ Upload photo)". It has a page where you can view live videos. These live videos have the src with the blob – Venkat Krishnan Dec 02 '18 at 07:04
  • @wOxxOm sorry for the delayed reply. After you install the extension, go to any instagram Profile. On the top right, you can see 3 extra icons. One is a phone icon(browse insta like on a phone), one is Download All button. There is another button which opens an extension page "stories.html" This is where you can view the live blob videos – Venkat Krishnan Dec 04 '18 at 03:42
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    Apparently there's no way because the extension plays the videos via MediaSource API and so there's no single data stream to save. Instead there are many DASH chunks that Chrome plays automatically without muxing to a single file. If I remember correctly, FFMPEG command line tool can stitch such video directly from an URL that points to `.mpd` video descriptor so look for the examples. – wOxxOm Dec 04 '18 at 08:59

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