The Leawo iPhone Video converter advanced version can also rip and convert video to iPhone, MPG to iPhone, FLV to iPhone, RM to iPhone, etc. It can help to get your video trimmed for a short video duration you need. It can also help to get your video cropped for the video dimension that goes with your mobile phone. Firstly, it can easily trim video to retain a short duration. You can use this function to cut the video length to retain a short duration to meet your needs. And secondly, it can also crop video to extract the video black margins. This PRO version can do you a good favor to crop video to extract the video black margins. You can easily adjust the video dimension under “Trim” to remove the black margins. Besides, it make the original video quality better. To make the original video quality better, you'd better set audio and video effects by dragging the slides for Brightness, Contrast, and Audio Volume.