Exif (Exchangeable image file format) is a way of storing information from the camera in a photo file. When recording video the Canon DSLR's record the exif data in a thm file. Every video on the camera will have a corresponding .thm file. Since the thm files are really jpg files the data can be read with Photoshop or Preview.


Preview

  1. Make a copy of the .thm file.
  2. Change the extension from.thm to .jpg. A warning dialog will appear. Click Use.jpg.
  3. Open the file in Preview.
  4. Go to Tools > Show Inspector (Command-I).
  5. Click the More Info Inspector tab.
  6. Click the Exif tab.


Photoshop

  1. Make a copy of the .thm file.
  2. Change the extension from.thm to .jpg. A warning dialog will appear. Click Use.jpg.
  3. Open the file in Photoshop.
  4. Go to File > File Info.
  5. Click the Camera Data tab.