Leawo Free MKV to MP4 Converter is a powerful and totally free video to mp4 converter that can easily convert all common and DRM protected videos to mp4 file, such as avi to mp4, mkv to mp4, wmv to mp4, etc. This free mp4 converter also can convert video to audio file like video to MP3. Thus with the fast conversion speed and excellent output quality, you can freely and easily enjoy video on your Portable players like video on iPod, iPhone, Apple TV, PSP, PS3, etc. KEY FEATURES of Leawo Free MKV to MP4 Converter: 1. 100% free video to mp4 converter. 2. Free MP4 converter converts video to mp4: avi to mp4, mkv to mp4, wmv to mp4, mov to mp4, etc. 3. Free convert video to MP4 for Portable players like iPod, iPhone, PSP, PS3, Apple TV, etc. 4. Convert videos to audio files like video to mp3, aac, m4a, etc. 5. Trim video to retain a short duration. (PRO) 6. Crop video to extract the video black margins. (PRO) 7. Set audio and video effects: video brightness and contrast, audio volume. (PRO) 8. Make the original video quality better. (PRO) 9. Support batch video to mp4 conversion to convert multiple video to mp4 at a time. 10. Merge video files at random. 11. Upload video to YouTube directly. 12. Capture beautiful thumbnails to enrich the picture database and set as Wallpaper. 13. User-friendly video to mp4 conversion interface. 14. Fast conversion speed and excellent output quality. 15. No machine performance requirement for video conversion.