---
title: kMovieMediaAutoPlay
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/movie_media_sample/kmoviemediaautoplay
---

# kMovieMediaAutoPlay

A Boolean that indicates whether or not the embedded movie starts playing immediately after  instantiation.

## Overview

Overview QuickTime uses this atom only if the TimeBase of the embedded movie is not dependent on the container movie. If this atom is present and auto play is true, the movie plays at its preferred rate after instantiation. If this atom is not present, the embedded movie does not automatically play.

## See Also

### Data fields

- [kMovieMediaDataReference](quicktime-file-format/movie_media_sample/kmoviemediadatareference.md)
- [kMovieMediaDefaultDataReferenceID](quicktime-file-format/movie_media_sample/kmoviemediadefaultdatareferenceid.md)
- [kMovieMediaLoop](quicktime-file-format/movie_media_sample/kmoviemedialoop.md)
- [kMovieMediaUseMIMEType](quicktime-file-format/movie_media_sample/kmoviemediausemimetype.md)
- [kMovieMediaTitle](quicktime-file-format/movie_media_sample/kmoviemediatitle.md)
- [kMovieMediaAltText](quicktime-file-format/movie_media_sample/kmoviemediaalttext.md)
- [kMovieMediaClipBegin](quicktime-file-format/movie_media_sample/kmoviemediaclipbegin.md)
- [kMovieMediaClipDuration](quicktime-file-format/movie_media_sample/kmoviemediaclipduration.md)
- [kMovieMediaEnableFrameStepping](quicktime-file-format/movie_media_sample/kmoviemediaenableframestepping.md)
- [kMovieMediaBackgroundColor](quicktime-file-format/movie_media_sample/kmoviemediabackgroundcolor.md)
- [kMovieMediaRegionAtom](quicktime-file-format/movie_media_sample/kmoviemediaregionatom.md)
- [kMovieMediaRectangleAtom](quicktime-file-format/movie_media_sample/kmoviemediarectangleatom.md)