From 4Videosoft Studio:
1. Convert MKV video to MP4, MOV, AVI, WMV, FLV, MTS, TS, MXF, MPEG and even HD videos with excellent quality, and it will not damage the original image quality. Also, it enables you to extract the audio file from the source video and convert them to MP3, WAV, AAC, AC3, FLAC, WMA, AIFF. You are able to enjoy these output videos on portable devices like iPhone 6s/6s Plus/6/6 Plus, iPhone 5s/5c, iPad Air, iPod touch, Samsung Galaxy S6, Samsung Galaxy Note 3, HTC one M8, Nokia Lumia, Sony Xperia, LG Z3.
2. It enables you to merge more than one audio/video file into one single file. Also, you can trim the video length by setting the start time and the end time.
3.You can also edit the output video's effect by adjusting the Brightness, Contrast, Saturation, Hue and Volume. To personalize your output video, you can add watermark to it with text and picture and choose the playing area with the crop function.
4. Reset the profile settings like video Encoder, Frame rate, Resolution, Aspect Ratio, Video Bitrate.
5. Preview converted video and capture picture of your favorite moment.