[matsemann]

Is it possible to render and export the video in browser, preferably faster than playback speed?

Use case is a service where people can upload certain data and I use that to generate a video. Let's say I gave you the option to make a speed gauge video, that display the values you input, one after another, for a second each. If you upload 60 values, that will be a minute video. But if you upload your speed each second for an hour, that will be an hour long video. But should ideally not take an hour to render. Unfortunately I've seen most browser based tools can't render faster than playback. So would have the user watch the whole video to actually download it.