FFmpeg can capture images from videos that can be used as thumbnails to represent the video. Most common ways of doing that are captured in the FFmpeg Wiki. But, I don't want to pick random frames at ...
I have Windows 7 and I have some image files with the ending .j2k on my computer. These are jpg2000 images. Unfortuantely Windows 7 doesn't offer a preview of the actual image in the Explorer ...