Dolby Atmos Conversion Tool allows the user to change the frame rate of an Atmos master file or composition. For the Atmos master or composition to match the duration of the corresponding frame rate converted video, it is important to know that there are two types of frame rate conversion for video and understand which type has been used.

Traditional video frame rate conversion is a "slew" (pull up/down) that results in a speed change. To convert an Atmos master or composition to match video that has undergone traditional video frame rate conversion, "Maintain pitch and length" should be unchecked as the duration of the Atmos master or composition needs to be shorter or longer to match the sped up (or slowed down) video. This also means the audio will be pitched up/down.

The other type of frame rate conversion is a standards conversion which employs video processing to interpolate/combine fields/frames to change the frame rate of the video without duration and pitch changes. To convert an Atmos master or composition to match a video asset that has the frame rate changed via standards conversion, "Maintain pitch and length" should be checked.