If you have tried removing a logo from your own video, you have probably seen very different results: sometimes it vanishes, sometimes you get a smudge. The difference comes down to one question: can you see the picture through the watermark?
See-through watermarks
Many watermarks are a pale, partly transparent shape laid over your video. The original picture is still underneath, just mixed with the mark. If the mix can be measured, it can be undone, so the real pixels come back instead of being blurred. That is what the Watermark Remover tries first.
Solid watermarks
A solid logo covers the picture completely. The pixels under it were never recorded, so nothing can be recovered. If the camera or the scene moves, the tool can borrow the hidden pixels from other moments in the video. If the scene is almost still, it paints the gap in from its surroundings, and you may see a faint patch, especially on detailed backgrounds.
Things that make it harder
- A watermark that moves around the screen. The tool is built for marks that stay in one spot.
- A very faint mark on a busy, detailed picture. The automatic scan may not find it, and you will be asked to draw a box.
- Large logos. They leave more to fill in.
A quick way to judge the result
Play the finished video once at full size and watch the corner where the logo used to be. Then pause on a few frames. If you see a ghost or a patch you do not like, try drawing the box a little tighter or a little larger and run it again.
Only use this on your own videos or ones you have permission to edit.