Currently, it is not possible to add subtitles to videos in Wix Video.
We are always working to update and improve our products, and your feedback is greatly appreciated.
Note: All information, including planned features and time estimations, are purely informative and are subject to change or cancellation at any time at Wix’s discretion. They do not represent a promise, commitment or guarantee of future availability or implementation, and should not be relied upon in making purchasing decisions.