Most videos downloaded from YouTube or other popular video sharing websites are always in FLV format, while FLV is not widely supported by most portable devices for playback. In the circumstance, you may need a video converter help you to convert FLV files.
Leawo FLV to MKV Converter is an easy-to-use Video to MKV Converter, which supports various video converting at fast conversion speed and great output quality. Armed with very user-friendly interface, the program makes FLV to MKV conversion so simple. You can easily finish the conversion in a good mood and to enjoy the file.
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1. Add FLV Files
After install the FLV to MKV tool, please launch the program. Click add button to load resource files. Or you can check “File” to add prepared FLV video files as the input.
2. Output Settings
Click “Profile” on the toolbar, choose “MKV (Mastroska) Video (*.mkv)” as output format. After that, you can continue your file general settings in “Settings”, all parameters are adjustable: video size, video/audio codec, frame rate…
3. Optional to Edit Video Effects
Click 
head to edit part, you can edit video effects (brightness, contrast, and saturation), trim video segments and crop files.
4. Starting Converting FLV to MKV.
Check parameters above, and then click 
on the main interface to start to convert FLV to MKV.
That’s it. As long as the con version is completed, click “Open” to enjoy converted files.
