To edit your videos before converting them, click the Edit button on the right in the file info section. A new window with multiple tabs will open.
Click Stabilization and experiment with the available tools to fix shaky-cam footage. Open the Audio tab to adjust the volume or remove background noise. Go to Adjustments if you want to alter contrast, saturation, brightness, and other parameters. Use the Effects tab to apply a variety of creative filters to your videos. In the Subtitles and Watermark tabs, you can insert subtitles or watermarks, respectively. You can also cut the edges of your video, rotate it, or trim away fragments you don’t want in the appropriate tabs.