---
title: Play on open
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/print_to_video_atom/play_on_open
---

# Play on open

An 8-bit Boolean value that indicates whether the movie plays when opened.

## Overview

Overview The value is normally 1, indicating that the movie plays when opened. Since there is no visible controller in full-screen mode, always set this field to 1 to prevent user confusion.

## See Also

### Data fields

- [Display size](quicktime-file-format/print_to_video_atom/display_size.md)
- [Reserved](quicktime-file-format/print_to_video_atom/reserved1.md)
- [Reserved](quicktime-file-format/print_to_video_atom/reserved2.md)