AVI Editor for Mac is a powerful editing software to edit avi video files for mac os x.

Here is a guide to teach you how to edit avi for mac with AVI Editor Mac.

1. You need to download the Mac AVI Editor. It includes Intel Version and PowerPC Version which can be free downloaded.

2. Install the editor in your mac and run it. You can see the interface:

3. Click "Add Files" in the main interface to add avi videos you want to edit.

4. Clicking "Trim" button is to trim the video you checked.

You can find two red circles in the image below. Drag them to reset the start point and end point, which means to select the start time and end time of the video.

5. Choose "Crop" button in the interface, and you can see the crop window.

Dragging the frame around the video, you can adjust the dimension of the video, or changing the number under "UP, Down, Left, Right" option also has the same effect.

6. Adjust video effects by clicking "Effect" panel.

You can drag the slider to set the video brightness, contrast, saturation and video volume. If you want to special effect, you can click the down-arrow in Filters to choose special one. The preview screen in the right pane allows you to watch the effect at once.

7. In the main interface, you can see a preview screen which provides a snapshot button to help you capture images you like. Clicking the folder button, you can find these images you have captured.

8. The AVI Editor Mac has a function to merge multiple video files into one file. You just need to check "Merge into one file" before converting.

Mac AVI Editor provides so many functions to let you customize a result you like. Have a try and you must find what you want.