RTSP/ Home Assistant Homekit - no audio

[haitham506]

Hello,

go2rtc config:

streams:
  Entrancego2rtc: ffmpeg:rtsp://user:psss@192.168.3.3/Preview_04_sub#video=copy#audio=opus

Home Assistant Homekit config:

homekit:
- name: Entrance Cam
  port: 21088
  mode: accessory
  filter:
    include_entities:
      - camera.entrance_sub
  entity_config:
    camera.entrance_sub:
      stream_source: rtsp://192.168.3.3:8554/Entrancego2rtc
      support_audio: True
      video_codec: copy
      audio_codec: copy
      linked_motion_sensor: binary_sensor.binary_sensor_entrance_person

Playing the camera on the browser or VLC works fine with audio. When playing the camera in Home app (AppleTV/iPad) there is no sound even though it is OPUS

But if I add the camera to Homekit through go2rtc directly the audio works fine

I want it this way to link the motion sensor to the camera for push notifications with thumbnail + if I add it to homekit through HA without go2rtc the audio will be Choppy because of the transcoding aac to opus

What is the issue here?

Thank you :)

[AlexxIT]

Probably Hass doesn't support OPUS audio for HomeKit

[haitham506]

But it says here that it does

audio_codec string (Optional, default: libopus)

Only for camera entities. FFmpeg audio codec for transcoding. copy option reduces CPU load when audio source is already encoded with libopus.

https://www.home-assistant.io/integrations/homekit/#audio_codec

Doesn't that mean that it does support it?

Thank you for replying

[AlexxIT]

You can check Hass project issues. It has problems with OPUS codec. Because HomeKit uses non standard OPUS implementation. You can't copy it. You can't use FFmpeg for it.