On google colab, blob the files instead of base64coding them.

[Kreijstal]

The problem is that base64coding videos will make the webpage slower and consume way more memory, but there is a better way, blobing the files.
Here is a google colab showing it off https://colab.research.google.com/drive/1FF6AHXu0L6nQw-LF8LymRotfcKfBI5Vh?usp=sharing
if you see the url of the video, you will see that it is a blob.
https://stackoverflow.com/questions/61982233/how-to-get-url-from-google-collab-file-inside-the-workspace/61984094#61984094
A SE question explaining the issue too.

Alternatively, allow a callback function for the url of the file once is completed, the callback will contain the custom code.

[krassowski]

Sounds ok. I would welcome and review a pull request implementing this as an another option if you wish to make one.

[Kreijstal]

Right now I'm very busy :( but, sure if I get the time, I'll be able to work on it (I'm a still nooby in python) but no promises.

[Scoder12]

How does this work on colab? The issue of not being able to connect to the container using localhost is the entire reason the base64 method is used. When I run your demo on colab, all I get is the following:

[Kreijstal]

@Scoder12 good question, I think it works by creating a webworker, and the webworker send the requests automatically, that "localhost" you're seeing, is not actually connecting to your localhost, it should be intercepted by the browser and know it's a connection between the main thread, and the webworker.
(this is how from google.colab import files does this, so I just read the code to figure it out)

It worked again on my system, however.