iMovie '11: About image resolution of shared projects
When you export or publish a video from iMovie, you select a size, also known as a “resolution.” Resolution refers to the width and height of the video as measured in pixels, and it is notated like this: 1920x1080. Higher resolutions provide higher-quality video but also result in larger file sizes because they use more pixels.
Electronic devices also have a screen resolution, which is the width and height of the screen, measured in pixels. For optimal viewing quality, your video’s resolution should be close to or just higher than your device’s screen resolution.
The Share window displays a list of available resolutions for exporting your video, with dots indicating which Apple devices support them. Newer devices may play higher resolutions than what is indicated.
Here are the screen resolutions of Apple devices:
- Mac computers:280x800 and higher
- iPhone 4, iPhone 4S, and iPod touch (4th generation):960x640
- iPhone 3GS and iPod touch (3rd generation):480x320
- iPad (3rd generation):2048x1536
- iPad (1st generation) and iPad 2:1024x768
- iPod classic:320x240
- Apple TV (3rd generation):Up to 1920x1080
- Apple TV (1st and 2nd generations):Up to 1280x720