Construct Animate's export-to-video is faster than real time, whereas the Video Recorder plugin only records in real time. Each has their uses: if you want to export a 5 minute video without having to wait 5 minutes, faster than real time encoding is useful; if you want to be able to record a video which includes you interacting with the project, then you'll need to record that in real time.
Construct Animate's free edition allows exporting videos up to 5 seconds - other than that limit everything else works so you can try it out yourself.