Changing Aspect

The latest thing you should choose for your output video is the aspect ratio used. The aspect ratio of an image is its displayed width divided by its height (usually expressed as "x:y"). You can read more detailed information on aspect ratio here.

In common life you will not need all the theoretical knowledge on the aspect ration and its peculiarities. We'd recommend that you use the following simple rules while choosing the necessary aspect for your output video:

Use the Aspect Ratio buttons of the Top Toolbar or the Aspect Ratio option of the Edit section of the Top Menu and select one of the options:

4:3 Aspect Ratio button - the 4:3 aspect ratio is used in case you plan to watch your output video on a common CRT-display or CRT-television set that has the proportions of the width and height 4:3 (it looks almost square, in fact, its screen width being slightly longer than height).

16:9 Aspect Ratio button - the 16:9 aspect ratio is used in case you plan to watch your output video on a wide-screen LCD or plasma display or TV-set that has the proportions of the width and heigth 16:9 (you can for sure distinguish it from that with the 4:3 aspect as it is quite elongated horizontally, its width being almost twice the size of its length).

Note!Note: in case you import 4:3 video files and then choose the 16:9 aspect ratio the black bars (mattes) will be added by the sides of the output video to preserve the image size and prevent distortions. See the Using Crop Scale section to find out how to save video with an aspect ratio different from that of the imported files without mattes adding.