{"id":10035,"date":"2022-06-21T09:10:42","date_gmt":"2022-06-21T09:10:42","guid":{"rendered":"https:\/\/developer.rdkcentral.com\/documentation\/documentation\/documentation\/rdk_video_documentation\/components\/open-sourced_components\/advanced_adaptive_media_player_aamp\/aamp_audio_output_settings\/"},"modified":"2025-03-25T05:18:34","modified_gmt":"2025-03-25T05:18:34","slug":"aamp_audio_output_settings","status":"publish","type":"page","link":"https:\/\/developer.rdkcentral.com\/documentation\/documentation\/rdk_video_documentation\/components\/advanced_adaptive_media_player_aamp\/aamp_audio_output_settings\/","title":{"rendered":"AAMP Audio Output Settings"},"content":{"rendered":"


\n <\/p>\n

Audio settings are platform (M12\/M11) and TV\/Receiver dependent.  This controls<\/span> <\/span>audio format sent out HDMI and does not impact which audio stream is sent to the audio decoder.<\/span><\/p>\n

    \n
  1. “Stereo” : sends all audio as stereo PCM out HDMI, regardless of the TV capabilities, regardless of the incoming audio stream.<\/span> <\/span>Audio stream is decoded and down mixed to 2 channels, system pcm (Voice Guidance, etc..) is mixed in , and sent out HDMI.<\/span><\/li>\n
  2. “Auto-Detect” : If the TV only supports stereo, then same as “Stereo” above<\/span>\n
      \n
    • If TV supports up to DD\/AC3 (and not DD+) , or box is STB and older (MS11), then all audio formats are decoded, mixed with pcm (Voice Guidance) and re-encoded to AC3 (this allows 5.1 channel support over HDMI)<\/span><\/li>\n
    • If TV supports DD+ and STB having MS12 licensed, then all audio formats are decoded, mixed with pcm, and re-encoded to DD+ (which allows 7.1 channel and Atmos support)<\/span><\/li>\n<\/ul>\n<\/li>\n
    • “Expert Mode” : If TV supports the audio stream format directly, then the raw audio bit stream is sent with no decoding or mixing of pcm<\/span><\/span><\/li>\n<\/ol>\n

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