Apologies for the delayed response.
Based on what is printed in your log, the format of the video you are trying to capture is not compatible with the version of the capture mechanism in the Jaksta build you are running.
I am on a Mac10.13.6 High Sierra. All of a sudden my downloads wont go. It now gives me an error "No Video Format." It never gave me this error before. Ive tried from Chrome and Safari. I don't know what else to try. Here is my log file.
Thanks in advance for any help,