I am not sure whether this is a WPT issue or my script issue. In my script I try to navigate to different links on page using exec and wait command, with video enabled. But when the video is generated, it’s generated only for the first link that I hit, all other results have correct filmstrip view but incorrect video generation.
Probably a bug on the WPT side. Can you send a link to a filmstrip for a later step where creating the video results in the wrong video (email to pmeenan@webpagetest.org or filing a github issue would be best).