Add a video file. Click the Add Media button and then Add Video in the upper left corner of the program interface.
​ Choose the desired output format. Open the list of supported video formats by clicking the Video tab and select the desired one.
Specify video resolution. Click the Cogwheel icon below the presets ribbon. Locate the Frame size drop-down list. Here, you can either choose one of the standard resolutions, or specify your desired resolution in the Width and Height boxes to the right. Click OK to apply the changes.
Convert your video. Click the Convert button and wait for the process to finish. When the conversion is complete, the folder containing the output files will open automatically.