1. AAC audio file format

    Advanced Audio Coding format, designed to be the successor format to MP3, with generally better sound quality.

  2. MPEG-4/H.264 video format

    Commonly used video compression format.

  3. elementinternals api: ariaactivedescendantelement

  4. element api: ariaactivedescendantelement

  5. mediasession api: `setcameraactive()`