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Dolby Atmos and multi-channel surround audio tracks downmixing/outputting as stereo #25

Description

@swappertedium6j

Bug Description

Dolby Atmos and multi-channel surround audio tracks (such as 5.1 and 7.1 channels) are currently outputting as 2-channel stereo. The application downmixes the audio instead of preserving the full spatial or multi-channel surround sound stage.

Steps to Reproduce

  1. Open a media file containing a Dolby Atmos or multi-channel (e.g., 5.1/7.1 AAC, AC3, or TrueHD) audio track in Cassette.
  2. Play the file.
  3. Check the audio output device configuration or receiver information

Expected Behavior

The player should pass through or properly decode multi-channel and Dolby Atmos audio tracks to support native spatial or surround sound output on compatible audio hardware.

Actual Behavior

The multi-channel audio is downmixed and outputs strictly as 2-channel stereo (PCM 2.0).

Environment

  • Cassette Version: Latest
  • Operating System: latest
  • Audio Setup: AirPods MAX and AirPods Pro

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