Ingest Support the OPUS format for Enhanced RTMP.

[shogo4405]

Description & motivation

Support for the OPUS extension in Enhanced RTMP. This PR is for Ingest only. I’d like to implement Playback as well, but I can’t find a product with server-side support. Could someone help?

Usage

var audioSettings = AudioCodecSettings()
audioSettings.format = .opus
await stream.setAudioSettings(audioSettings)

• I tests using mediamtx.
  • Ingest H264 + Opus
  • There seems to be some audio dropouts, but it's unclear whether the issue lies with HaishinKit or some other factor.

ffplay http://localhost:8888/live/live/index.m3u8

Type of change

• New feature (non-breaking change which adds functionality)

Screenshots:

[github-actions]

Danger has errored

[!] Invalid Dangerfile file: No such file or directory @ rb_sysopen - HaishinKit/Tests/RTMP/FLVVideoFourCCTests.swift

 #  from Dangerfile:3
 #  -------------------------------------------
 #  
 >  privacymanifest.report
 #  -------------------------------------------

Generated by 🚫 Danger