THM files are small files often created by the camera to act as thumbnails for images, and more often videos. They have a .thm extension following the file name.
THM files make it easier to browse a series of images and videos in playback without having to load the actual media file in memory.
Video files have the exact same name as .thm files, but with a video extension such as avi.
The THM file is the first frame of the video. It is the initial still image you see when previewing a movie in a camera.
THM file is a small JPEG
For videos, THM files often are used to store data much in the same way as is done with EXIF data for still images. This is because the THM file is actually a small JPEG with a different extension.
If you change the .thm extension to .jpg, the file will change to a JPEG image (for example, change. MVI_8233.thm > MVI_8233.jpg).
Most cameras will not playback videos if the THM file is missing or damaged.
My computer won’t playback videos if the THM file is missing, either.
I found that out the hard way, and for some reason I can’t find the THM file for this video in the recycle bin.
If your video is still on your memory card, check for the thm file or download the video again to your hard drive. You can also use an image recovery program if your files have been deleted. Most free versions don’t recover video, so you may have to purchase a recovery program. (Sandisk Extreme III memory cards come with an effective recovery program).
Leave a response
Add your comment on the left.
Be nice. Keep it clean. Stay on topic. No spam.
Digicamhelp is gravatar enabled. To get your own globally recognized avatar, sign up at Gravatar.
In Glossary