Convert all video file to MKV format
button on the main interface (or you can click "menu" button on themain interface, then select "format
convert" to find "any format convert to MKV " in the submenu),
select one file,and then the program will switch to "any format convert
to MKV " interface as follows: 
If you want to reselect the file that will be converted on the file list, please click the
button. Then choose the file that you want to convert again.
Choose output directory:
You can click the
button to select the output directory or you can type the directory directly into the box.
Advanced settings:
After you click the
button, you will get the "Advanced" page.
You can change some settings for the output file that you have selected.
Video : You can choose the video encoder by click the option that are listed and set the video size and frame rate.
Audio bitrate: You can choose the audio bitrate that are listed.
Audio sample rate: You can choose the audio sample rate.
When everything is ready, please click "Ok" to start converting. Also, you can click "Cancel" to cancel all the settings that you made .
