Video Editor for Mac, a perfect decoder and encoder for on Mac OS X with perfect pictures and high clear sound so that you can enjoy your favorite movie on your Mac . Aparting from converting this, Mac video editor, the quite powerful conversion software, is also the professional editor. This Video Editor for Mac OS X allows you to trim video, so you can convert video clips on mac. You also can cut, join video.
Step 1. Download freely Video Editor for Mac.
Step 2. Launch free and run Mac Video Editor.

The main interface of Video Converter for Mac direct simply you how to use it.
Step 3: Trim video file.

Click 'trim' botton to open the Trim window, then set the start time and end time by dragging the start time and End Time slider to convert a clip from your movie on Mac OS X.
Step 4. Click "OK" button.
Step 5. Crop Video.

If you want to remove the black edges or just convert part of the video from your video file, just click the "Crop" button and specify an area by dragging the frame around the video or setting the crop values.
Note : Aparting from this function, this Video Editor also allows you to adjust the video effect of your movie, join the severial video files together, cut the video files, ect.
