Here’s a review you can use or adapt for Video DownloadHelper (a popular browser extension), focusing specifically on the "remove QR code" feature (likely referring to the code that appears when trying to use the companion app or mobile features):

  • Alpha estimation:
    • FFmpeg delogo filter: ffmpeg -i input.mp4 -vf "delogo=x=10:y=20:w=100:h=50" output.mp4 (requires manual coordinate detection).
    • AI inpainting tools: Runway ML, DaVinci Resolve’s Object Removal, or HitPaw.
    • Scene-based cropping: If the QR is in a static corner, crop the entire video.

    The "Companion" Update: Ensure you have the latest version of the VDH Companion App installed; older versions often trigger the watermark by default.