[extractor/bravotv] Detect DRM

[bashonly]

Detect DRM-protected HLS formats and raise

Template

Before submitting a pull request make sure you have:

• At least skimmed through contributing guidelines including yt-dlp coding conventions
• Searched the bugtracker for similar pull requests
• Checked the code with flake8 and ran relevant tests

In order to be accepted and merged into yt-dlp each piece of code must be in public domain or released under Unlicense. Check all of the following options that apply:

• I am the original author of this code and I am willing to release it under Unlicense
• I am not the original author of this code but it is in public domain or released under Unlicense (provide reliable evidence)

What is the purpose of your pull request?

• Fix or improvement to an extractor (Make sure to add/update tests)
• New extractor (Piracy websites will not be accepted)
• Core bug fix/improvement
• New feature (It is strongly recommended to open an issue first)

Copilot Summary

🤖 Generated by Copilot at cc2995f

Summary

📥🔒🎞️

Add DRM detection and error handling to bravotv extractor. Use HEADRequest to check m3u8 URL for encryption.

Sing, O Muse, of the cunning coder who devised
A way to probe the hidden streams of video
And thwart the schemes of those who would disguise
Their m3u8 URLs with DRM's woe.

Walkthrough

• Import HEADRequest class from yt_dlp.utils module to make HEAD requests (link)
• Use HEADRequest to check the final URL of the m3u8 playlist and report DRM encryption if present (link)