What blur can and cannot do
Blurring, pixelating or covering with a solid box all destroy the information underneath. That is the point — it is the right answer when you need to hide a face, a licence plate, a customer name or an account number.
It is the wrong answer when the text is simply in the way. A blurred caption band in a product video reads as an editing mistake, and it tells the viewer that something was removed, which is usually the opposite of what you want.
How reconstruction differs
The model detects the text, builds a mask around each glyph, and generates replacement pixels using information from the same region in neighbouring frames. Where the camera moves, adjacent frames contain the background that the text is covering — that is the information the repair is built from.
This is why results are best on shots with some camera or subject motion, and weakest on a completely locked-off shot where the background behind the text was never visible in any frame.
- Preserves framing, resolution and aspect ratio
- No visible tell that anything was removed
- Depends on background complexity, not on the text itself
Choosing between them
Ask what the viewer should believe. If they should know something was hidden — a redacted document, a blurred face in a documentary — blur. If the frame should look untouched, reconstruct.
There is also a hybrid: reconstruct the text, then apply a blur to a separate region that genuinely needs redaction. The two operations do not interfere.
Frequently asked questions
Is reconstruction always better than blur?+
No. For privacy redaction, blur is correct and reconstruction would be a mistake — you do not want to invent a plausible face. Reconstruction is for removing text that is merely in the way.
Will there be a visible patch?+
On flat backgrounds and moderate motion, usually not. On faces, foliage, water or heavy grain, some softness in the repaired area is normal. Always review in motion before publishing — a still frame hides flicker.
Can I remove text and still blur something else?+
Yes. Process the clip here first, then apply your blur or mosaic in any editor. Doing it in that order avoids the blur being interpreted as part of the background.
Does it work on a locked-off shot?+
It can, but with less information to work from. A tripod shot with a static background behind the text is the hardest case; a slow push-in or handheld drift gives the model far more to reconstruct from.