Generating Still Images From a Video File

Selecting the Frame

First step will be to open the highest quality available master that you have access to in Quicktime and advance the playhead to the frame that you would like to derive a still image file from.

Copying

In the navigation bar at the top of your screen, select Edit and navigate down to Copy (⌘C) and select this option.

Paste from Clipboard

In the navigation bar at the top of your screen, select File and navigate down to New From Clipboard (⌘N) and select this option.

Save

In the navigation bar at the top of your screen, select File and navigate down to Save (⌘S) and select this option.

Formats

First inputting your desired filename under the Save As field.

Next select the location for these files to be saved under the Where field.

Finally, you will select your desired Format and complete your export by clicking Save.