Step by step to edit, crop, trim, merge, effect your favorite .mp4 files and capture pictures on Mac OS X.

First you need to download the Mac MP4 Editor. MP4 Editor for Mac includes Intel Version and PowerPC Version which can be free downloaded.


Install MP4 Editor on your mac, launch the MP4 Editor, you will see the interface:



Click 'Add File' button to load .mp4 file you want to edit.

Click 'Trim' button to trim the video file your selected. The trim working window like this

MP4 Editor for Mac allows you to trim mp4 files, so you can edit mp4 clips on mac. 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.



Click 'Crop' button to crop the video file you checked.

Draggthe frame around the video or setting the crop values: Top, Button, Left and Right by directly entering the crop values. Then you can remove the black edges or just select part of the video area from your video file.



Click 'Effect' button to adjust video effects.

Drag each effect adjustment slider to set the video brightness, contrast, saturation and video volume. You can also choose a special effect from the Effect drop-down list to apply to your movie.



Provide the ckecked movie and create thumbnail of playing movie.

You can preview the each selected movie in the preview window on the left of the main interface. Capture images from playing movies on mac with high picture quality. You can generate bmp or jpg format pictures. The captured image files can be saved in your specified folder. You can change the generated file name.



Merge multiple movie files into one file.

Check the 'Merge into one file' option to merge multiple files into one file. Select output format form 'Format' drop-down list as generate file type.



MP4 Editor for Mac is a professional Mac MP4 Editor, which can lets you set mp4 video brightness, contrast, saturation, crop mp4 video, trim mp4 video/audio and even merge multiple files into one file on Mac OS. It also supports all popular video formats including MP4, 3GP, 3G2, AVI, FLV, MKV, MOD, WMV, ASF, MPEG1, MPEG2, MOV, M2TS, MPEG TS/TP (for HD Video), etc.