feat: add volume boost toggle button for low-volume videos (#3284)

[bharathkumar39293]

Problem

Some videos, especially ASMR and low-volume recordings, remain too quiet even with full volume.
Adjusting the “Forced Volume” slider manually every time is inconvenient.

Solution

• Added a Volume Boost Toggle Button to the player controls.
• When enabled, boosts volume up to 200% instantly.
• Works seamlessly with existing volume slider and keyboard shortcuts.
• Added a setting toggle to enable or disable this feature.
• Includes a visual indicator when boost mode is active.

How to Test

1. Enable “Volume Boost” in settings.
2. Play a quiet video.
3. Click the new boost button — volume should increase up to 200%.
4. Adjust volume slider and check that it returns to normal when disabled.
5. Verify keyboard shortcuts continue to function normally.

Additional Notes

• Feature request: 💡Boost (Forced) Volume as a button or an override on actual volume slider. #3284
• Implementation references commit 5a45c44
• Safe for testing; does not override normal volume handling.

[cengsemihsahin]

Dude, loooks like the .gitignore file is not in the root directory so adding it there would make the setup a bit cleaner...

[bharathkumar39293]

Hi @ImprovedTube, @cengsemihsahin 👋
I’ve cleaned up the branch and ensured the .gitignore is in the root directory.
The PR now includes only the intended feature — the Volume Boost toggle.
All checks are passing and it’s ready for review again. 😊

[bharathkumar39293]

Hi @raszpl and @ImprovedTube,

I wanted to follow up on this PR, which implements the volume boost feature requested in #3284. It adds a toggle button to instantly increase volume up to 200% for quiet videos and integrates with current controls and settings.

All code is tested and the PR is currently mergeable. Your review or any suggestions for improvements would be greatly appreciated!

Thank you for your time.

[ImprovedTube]

hi! :) @bharathkumar39293 🥰
sorry i'm late
unfortunately this PR is empty yet

about, audio boost check #1445 ctrl+f "boost"

• Volume Boost: Adding a little red area to youtube's slider. 1)Plan 2)better global addon 3)combine with normalization#comment ( max. gain#comment ) ; ... ; soundfixer (free code!)
  - [ ] (And/or just a toggle on/off features exist )

(besides Youtube has now made the volume slider horizontal)