4Media Video Frame Capture 

4Media Video Frame Capture for Mac is excellent frame capture software to extract images from many videos, e.g. MPEG, DivX, XviD, AVI, RM, MP4, M4V, MOV, and WMV. The extracted images can be saved as JPEG, PNG, GIF or BMP, or exported to GIF animation, FLASH or HTML. You can batch capture or take a snapshot of pictures automatically or manually. It offers a picture list to preview the grabbed images, which allows you to choose the exact frame to output.