The FSTHUMB file type may seem strange to most people, not only is it unpopular, but also it cannot be opened, edited or uploaded with any program. People probably wonder whether it's possible to convert FSTHUMB file to the universal MP4 format. Absolutely not! Here is the reason.
FSTHUMB file is actually a Thumbnail Cache file generated by a terrific video editing program - Wondershare Filmora, alongside with a .wfp project file. It is produced to help fast load thumbnails and images when opening Filmora project file next time. You can even delete it, which makes no difference to your project but takes a little bit longer loading time. In short, since there is no video information in FSTHUMB file, it's impossible to convert FSTHUMB to MP4.
Don't be upset, however, converting FSTHUMB file to MP4 video actually means rendering WFP project file to MP4 format. I'll demonstrate the steps below.
Double-click the .wfp project file if has been associated with Wondershare Filmora 9. If not, launch Wondershare Filmora 9, navigate to "File" on the top menu bar, select "Open Project" to open your WFP file. You can also press the hotkeys "Ctrl + O" or simply drag the WFP file into the program window.
Wondershare Filmora 9 will load and restore the last state you were editing including effects, titles, transitions and elements based on the instructions and references of the WFP file. Now you can go ahead with the further editing work, or simply hit the "EXPORT" button on the toolbar to proceed. Alternatively, press the hotkeys "Ctrl + E".
On the pop-up window, select MP4 format under “Local” tab and press “SETTINGS” button if you want to make some customized changes, such as adjust the video resolution, encoder, aspect ratio, bit rate, etc. Click OK to save the changes.
Finally, give a new name and a destination directory for the exported video. Hit "EXPORT" button to render the project to a real MP4 video.
That's all about how to convert FSTHUMB to mp4 in an appropriate way. All in all, DO NOT focus on the insignificant Thumbnail Cache file, FSTHUMB is just an appendant file accompanied with the WFP file. Hope that I make everything straightforward and clear up your confusion. If you still have any question about FSTHUMB file type, feel free to contact me for help. Thanks for your reading.
WonderFox HD Video Converter Factory Pro
1. 500+ presets for format conversion purpose.
2. Download video/music from 300+ websites.
3. Record screen, gameplay, live streaming, etc.
4. Foolproof video editing with only a few clicks.
5. GIF maker, ringtone maker, subtitle extractor, etc.