F4V is flash video format like FLV used to deliver video over the Internet using Adobe Flash Player versions 6–11. Flash video is quite common on the internet but  incompatible with most video players and mobile device. So as to make flash videos playable on video players, we need to convert FLV firstly. In this post, we focus on teaching you how to convert F4V to MKV with Leawo F4V to MKV Converter.


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1-Click add file button on the toolbar or “File -> Add Video File/Add Video Folder” or direct drag and drop to load files. Batch conversions are supported, like the following picture show.

2-Choose output format. Click “Profile” to choose MKV as output format. For more advanced video/audio settings, click the button just after profile, you are free to set the parameters manually.

3-Optional to edit video, basic video editing features are offered. If you would like to adjust visual effect or other special needs, you may customize by yourself: trim, crop, effect and watermark.

Moreover, you can add 3D effect for output if you prefer:

4- Start converting F4V to FLV. After all these steps, all you need to do is to click  to start converting F4V to MKV in batch. When the conversion is finished, locate output file in “Output folder” and enjoy.