It offers real-time preview for 4 rotation modes: flip horizontal, flip vertical, rotation 90 degrees clockwise and counterclockwise. Merge multiple video clips and convert them to any format. Combine videos and audios. Add or change the background music to the videos. Remove the original audio tracks to extract soundless video streams. Extract lossless song or audio. Batch analyze audio files to the same volume level. Compress videos in a batch with 4 kinds of compression ratio. All popular audio formats are supported. Enjoy 30X conversion speed between 200+ formats breakthrough hardware acceleration technology. Support HEVC (H.265) codecs and improve image quality. Convert to 4K videos (H.265, H.264) regardless of input device or format. Cut down conversion time with Lossless batch conversion. Preset the best format & resolution of each output device. Support 160+ devices: iPhone, iPad, PSP, Apple TV, Xbox.