# Requirements for Dolby Atmos encoding
Encoding requirements

Note the following restrictions in the MediaConvert implementation of Dolby Atmos encoding:
+ **Input Channel-Based Immersive (CBI):** MediaConvert supports channel-based immersive (CBI) content.
+ **Input Dolby Atmos Master File (DAMF):** MediaConvert supports Dolby Atmos master file (DAMF). This is a collection of 3 files with the extensions, .atmos, .atmos.metadata, and .atmos.audio 
+ **Input Immersive Audio Bitstream (IAB):** MediaConvert supports immersive audio bistream (IAB).
+ **Input Audio Definition Model Broadcast WAV Format (ADM BWF):** MediaConvert supports ADM BWF. It is a single broadcast WAV file contains header data with the .atmos and .atmos.metadata information. 
+ **Output codec:** You can create Dolby Atmos audio outputs encoded with only the Dolby Digital Plus (EAC3) codec.
+ **Output containers:** For file outputs, you can create Dolby Atmos audio in only in one of the video containers that supports Dolby Digital Plus: MPEG-4, MPEG-2 Transport Stream, or QuickTime.
+ **Output packages:** For adaptive bitrate (ABR) outputs, you can create Dolby Atmos audio in any of the MediaConvert output group types: CMAF, Apple HLS, DASH ISO, or Microsoft Smooth Streaming.