Convert THUMB to MP4

A .thumb file is typically a thumbnail image generated by video players or editing software to preview the contents of a video file. It is not an actual video format, so converting it directly into an MP4 is quite unlikely. The .thumb file often corresponds to an associated video file; you’ll need the original video to create or export it as an MP4.

If the .thumb file is linked to a video editing project, open the associated project in the video editing software that created the thumbnail. Once the project is loaded, locate the original video and ensure it is appropriately linked. From there, export or render the project as an MP4 file using the export settings within the software. Most programs like Adobe Premiere Pro or Final Cut Pro offer MP4 as an export option.

If the .thumb file was misnamed or incorrectly saved, you can attempt to rename it with an MP4 extension. However, this method only works if the file contains video data in the first place, which is rare for .thumb files. In most cases, .thumb files are merely references or preview images, and you'll need the original video file to create a proper MP4 conversion.