In Firefox, go to page that has the video

Right-click > View Page Info, click Media tab

Look for an address the contains brightcove, such as:

• http://c.brightcove.com/services/viewer/federated_f9?&width=660&height=349&flashID=myExperience&bgcolor=%23000000&playerID=4162656683001&playerKey=AQ~~%2CAAAAAE-vADk~%2CvuSqBN3kbUc4ZfQ8WEY6xBlEyWkAiIOq&isVid=true&autoStart=false&dynamicStreaming=true&%40videoPlayer=4605020007001&debuggerID=&startTime=1447464438684

Copy and paste that into Apowersoft Free Online Video Downloader and click "Download"

On the resulting page, choose the video resolution you wish to download locally.