How to send video from extension to webpage - javascript

I want to send a video that was recorded by a screen recorder in a chrome extension to my webpage after it's done recording. My question is how would I go about sending a video file back to that specific webpage. I'm new to working with chrome extensions so I'm a bit stuck on this.

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How to detect available disk space when saving a file in browser

I have implemented a screen recording feature into our webrtc conferencing app. (Normal MediaRecorder API)
I am using FileSaver.js to save the recordings.
Everything is working just fine.
I was presented with a problem today!
What if user's HDD is full, what happens then?
I tested this. chrome says "Failed, File Too Large" and nothing.
File is not saved and there is no option to retry somewhere else :((
So ... is there any way to detect this somehow and prompt the user to re-download/re-save the recorded file again ?

How does a website know my laptop is connected to an external monitor?

I was on a video streaming website, and it notified me that I am not allowed to view the video because it detects that my browser is connected to an external monitor.
How does the browser detect this?
Its part of the DRM system. Your browser ships with a Content decryption module (CDM) to securely play back DRM content.

How to download/save HTML5 Video on IOS to device

I'm building a web application that creates a slideshow mp4 video. It will be uploaded to S3 and viewed through HTML5 . The goal is to share it on instagram but instagram doesn't allow direct sharing through web. Hence, the alternative is to get the user to download it to their mobile device and upload it manually through the app.
On Android, I'm able to download the video using it's video controls or through <a href='s3-video-link.mp4' download>
However this doesn't work on IOS. How can I download a html5 video onto the mobile device? Can I download directly from s3 somehow? Or is there any possible option to get it to upload to instagram?
The sandboxed nature of iOS means that while Safari can access and download a file unless there is an app registered to handle that filetype that immediately accepts it then it is lost to the user.
If the user has the Instagram app installed, then you could use their custom URL scheme to reference the asset, but the documentation seems more targeted to images than video so YMMV.
There have been some attempts to reverse engineer the APIs that their app uses, and create ways around their current limitations, but nothing that would address your requirement (the various sharing widgets that target Pinterest, Facebook etc don't seem to support Instagram so it's a common problem). Might be worth reaching out to their developer support folks?

How to play AVI videos on website?

I'm creating a web system wherein the user can view the videos of AVI format. Is there any way to do this without making use of codecs? I want this to be hassle free for the users that even if the user uses a Mac or a windows or Linux-based computer, he/she can still view the videos.
the videos are saved on my web server and I just have to access their URL as the source of the video. These videos are in AVI format since these videos are taken from the Pepper, the robot by Aldebaran.
Can anyone help? Thanks

how do i download youtube video through developers tools

This question is basically more about how does youtube player works...from network activity in chrome developer tools, i can see that something is streaming/octet...so flash player is taking stream and showing it.
But the video also gets cached so how can i download that file. It has to be somewhere. I have searched through internet all examples point to some flv file that doesn't exist anymore and the one that is in network is something else and not what i am looking for, main video file.
Summary: (I'm skipping some basics, assuming familiarity with chrome-like dev tool panels) Visit network tab, search 'video' or 'audio', find a request videoplayback?..., copy its request link, remove range=... params, paste into browser. See more details at https://www.hongkiat.com/blog/download-youtube-media-without-tools

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