Canon MG8100 series On-Screen Manual page 256

Note
Only MOV format videos recorded with Canon digital cameras are displayed.
The selected video plays.
3.
Select the video from which you want to capture still images and click OK.
The selected video plays in Preview of the Video Frame Capture window.
Note
(Pause) appears while a video plays, and
video is stopped.
Use (Pause) and
the frame you want to capture.
4.
Display the frame you want to capture and click
The captured still image is displayed in the Captured frame(s) area.
Important
You can capture up to 150 frames from one video.
5.
Select the image(s) you want to save and click Save.
When the Save dialog box appears, specify the save location and file name, then click Save.
Note
Only JPEG/Exif data format is available for saving created still images.
6.
Click Exit.
Important
The captured still images will be deleted if you exit before saving them.
Note
You can automatically capture multiple still images from a video.
(Playback) appears while a
(Frame backward/Frame advance) to display
(Capture).