MKV is not a compressed format but an open standard free container format which can hold unlimited number of video, audio, picture or subtitle tracks inside a single file. It is one of the video formats that can offer users best visual effects so far. Whether you are the movie fans, the MKV is one of the best choices for you.
To convert MP4 to MKV for playback, Leawo MP4 to MKV Converter provides poweful functions. It can easily convert MP4 to MKV and other popular video formats at fast speed and high quality. Step-by-step guide will be shown in the following post.
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1. Load MP4 files into the MP4 to MKV converter.
a. Click 
to add source files
b. Check “File” menu, four choice are offered: Add video files, Add video files with Directshow, Add video files from with Quicktime and Add Video Folder.
c. Drag and drop source files.
2. Set Output.
Click “Profile” drop-down list to select MKV as output format. Or type in MKV in searching box, you will find it.
If you would like to resize video by
3. Settings
Changing video and audio settings manually, like reset video size, bit rate, just click the “Settings” button to customize output settings.
OPTIONAL–
4. Video Editing Features:
Trim: Keep the segments you want to keep. Split AVI to multiple MKV files.
Crop: Crop video to remove the unwanted video sides.
Effect: Set video brightness, contrast, saturation.
Watermark: Image and textual contents are both able to be added as watermarks.
3.
5. Start Converting MP4 to MKV.
Press 
button on the right at the bottom of the interface to start MP4 to MKV convert. If you have got multiple files, you can convert them in one time, the application supports batch conversions.
