HD Video Converter Pro allows you to convert both SD (standard definition) and HD (high definition) videos with great video and audio output quality. As iOS devices support only a few video formats, you can ask the program to convert your favorite movies into the required formats. Its plug-in video editor allows users to edit HD videos easily. You can get a specific length by trimming the video, crop the video to remove the black edges and unwanted video areas, merge several videos and audio files into one, and add text and image as watermarks. You can adjust output video and audio settings parameters, like frame rate, resolution, bit rate, etc., as well as change some parameters, including the audio and video encoders, aspect ratio, sample rate, channels, and audio bit rate to fit your needs.