My goal was to retrieve a preview thumbnail image of a live stream in progress. After some research, I found a method . After enabling the transcoder, I set the audio and video to ‘passthrough’, but that doesn’t work; an encoding (240p, 480p…) must be selected for the transcoder to yield a thumbnail. I chose the option that matches the broadcast. It works, I get the preview thumbnails, but my concern is the CPU overhead incurred as a result of the transcoder running. Is this approach recommended? If not, what other route can I take?
Although I have found other solutions, they were in outdated threads and, frankly, hackish.