[FEATURE] Add audio bitrate in screen_recorder

[dpvpro]

Submission checklist

• I have searched existing issues and confirmed this has not been requested before.
• I have checked existing pull requests for similar changes.

Feature type

Configuration / customization

Feature summary

Subj

Motivation / use case

There is case for lowrate recordings

Proposed solution

Add audio bitrate for screen_recorder

Alternatives considered

No response

References / related projects

No response

Additional context

No response