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Sothink Video Converter has two versions: Free Video Converter and Video Converter Professional. The two versions have the same features and functions except that the free version has a prompt bar on the interface, it supports less encoding profiles than the pro version and, there will display a transparent short message with effect each ten minutes in the video converted by Sothink Video Converter Free version.

For comparison details between free and pro versions, please click here >>

 

You may upgrade to pro version by directly click the link on the prompt bar on the interface of free version:

 

Or you may go to Menu, and select "Upgrade to Professional Version" under "Help", click button "Buy Now" in the dialog appeared to link to the page of ordering Video Converter professional version.

Just register to pro version by entering your registration name and key, which can be received once you purchased the pro version, into the dialog "Enter Key". To activate this program, please ensure your PC is connected to the Internet.