feat: Implemented HLS stream source as new plugin type.

[sepi]

Also implemented show_controls and autoplay attributes on the video element. These are particularly useful when showing a live stream.

Description

In order to be able to show an rtsp live stream, an HLS video source is implemented using HLS.js. The script is currently embedded using a CDN.

In order to stream rtsp to the web, you first need to make an .m3u8 playlist file available using for example ffmpeg. The URL of this file can be used as URL of the stream source.

Related resources

Checklist

• I have opened this pull request against master
• I have added or modified the tests when changing logic
• I have followed the conventional commits guidelines to add meaningful information into the changelog
• I have read the contribution guidelines and I have joined #workgroup-pr-review on
  Slack to find a “pr review buddy” who is going to review my pull request.

[fsbraun]

Hey @sepi !

Thanks for the PR! Looks good to me. I've added two comments.

In addition, can you add to the README the support of HLS streams?

Finally, can you add tests for the new plugin and model?

[vinitkumar]

@sepi Would be great if you can address these review comments so that we can work together quickly to get this merged.

[sepi]

I reacted to all of your comments except for the tests. I don't really see any functionality I could test correctly. Maybe I also don't believe in tests or am just lazy :P

[vinitkumar]

Looks good to me. @fsbraun Please have a look once too.

[fsbraun]

@vinitkumar @sepi To me, it seems, there's just a few small things ti fix:

• Ruff complains about unsorted imports
• Migrations seem to be missing

[sepi]

I fixed import order but the migrations are included: https://github.com/django-cms/djangocms-video/pull/84/files#diff-197153368845e47bec683979a4c09fb5a85f6ed16947aa314a05cd27cd138e98
https://github.com/django-cms/djangocms-video/pull/84/files#diff-eedd0dfb0b9cc18501fab08878bff39ce62c9f89b706066cb85dd0978bed4a71

[fsbraun]

@sepi I had a look, and the change of CharField to URLField would have created another migration. Also, I think we should add tests for the new model and plugin. Would you mind having a look at the test_models.py and test_pluings.py files and take them as a template?

I made some updates to fix the migrations, superfluous spaces in the template and the test setup. (For some reason, I cannot compile the python 3.9 requirements on my machine - that can be fixed separately.)

PS: The existing tests revealed that your change to the video player template added unnecessary spaces...