An apparatus for generating an augmented reality, hereafter AR, presentation from content having original audio and video components, said content including a scene, the scene being associated with a respective environment in which the scene takes place, the respective environment having acoustical characteristics, the apparatus comprising: - an audio processor including: a summer configured to deliver combined audio components based on the original audio component and based on real audio signals delivered by a microphone connected to said summer; a virtual environment detector configured to detect the respective environment for the scene based on said video components; a real environment detector configured to detect the real environment based on images delivered by a camera connected to said real environment detector; an acoustics memory outputting acoustic characteristics associated with the detected respective environment and with the detected real environment; an environmental processor receiving said combined audio components and being configured to modify said combined audio components into modified audio components based on the acoustic characteristics - an authoring tool receiving said modified audio components and said original video components and generating corresponding encoding coefficients; and - an encoder configured to receive said original video components and said modified audio components and generating encoded content based on said encoding coefficients. - an audio processor including: a summer configured to deliver combined audio components based on the original audio component and based on real audio signals delivered by a microphone connected to said summer; a virtual environment detector configured to detect the respective environment for the scene based on said video components; a real environment detector configured to detect the real environment based on images delivered by a camera connected to said real environment detector; an acoustics memory outputting acoustic characteristics associated with the detected respective environment and with the detected real environment; an environmental processor receiving said combined audio components and being configured to modify said combined audio components into modified audio components based on the acoustic characteristics a summer configured to deliver combined audio components based on the original audio component and based on real audio signals delivered by a microphone connected to said summer; a virtual environment detector configured to detect the respective environment for the scene based on said video components; a real environment detector configured to detect the real environment based on images delivered by a camera connected to said real environment detector; an acoustics memory outputting acoustic characteristics associated with the detected respective environment and with the detected real environment; an environmental processor receiving said combined audio components and being configured to modify said combined audio components into modified audio components based on the acoustic characteristics - an authoring tool receiving said modified audio components and said original video components and generating corresponding encoding coefficients; and - an encoder configured to receive said original video components and said modified audio components and generating encoded content based on said encoding coefficients.