What file format is thm?

thm is an index file for MP4 or MPG video format files. It is essentially a jpg format picture. In addition to MP4 or MPG format video files, opening the video player also requires a thm format. The index file can only be played, and the file can be opened and viewed with ACDSEE.

The operating environment of this tutorial: Windows 7 system, DELL G3 computer.

What file format is thm

THM is an index file for MP4 or MPG video files.

Some video players require not only video files in MP4 or MPG format, but also an index file in THM format to play.

A file in THM format is actually a picture in JPG format, which you can open and view with ACDSEE. When the MP4 player cannot play MP4 or MPG files, it is because of the lack of this index file. Just find a picture in jpg format and change the resolution to 160*120, and then change the file name to be consistent with the name of the mp4 or MPG file that needs to be played. Change the extension to THM and you can play it.

The thm file generated by a digital camera is not a video file. When the camera records a video, it will generate two files with the same name. The larger one is the video file. If you save the video on your computer, the smaller thm file will be generated. It can be deleted. Without that file, the video cannot be played on the camera, but it will have no effect on the video itself.

Extended information

The THM file is an index file, which is actually a small thumbnail. For convenience Built for image file management. Many media file management systems will automatically generate this file.

Regarding how to prevent the system from generating this file, please turn off this function on your computer first: Explorer - Tools - Folder Options - View - Do not cache thumbnails (check). Then clear all the pictures on the camera and take new pictures to see if there are still files of this type. If there is still one, look for it in the camera's settings menu. There should be a similar option. If you also choose to disable use, this type of file will no longer be generated.

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