Same error, unfortunately!
I am using VCL to display the video.
Now the video downloads completely but without the image, only the audio and the image is stuck on the first frame
Video Downloader Professional
I downloaded another extension to test. There I can download the audio and video separately
extension is called: Video Downloader Professional
I downloaded the suggested \kdenlive and used the render option, but this process makes my life terrible. Before I used the extension that I bought the license for and it worked, and it was as if the video portal together with Vimeo made some update. But our extension here that I have the license with you, now only downloads audio.