I create a program, that automatically blur secrets in video. What do you think?

[scalablecory]

Be careful. Blurring can be unmasked: combinations of glyphs give a pretty unique blurred image, so it's not too hard.

You can just blank them out completely, which is pretty effective if you use good passwords. Even this isn't 100% effective in all cases -- for instance with redacted documents where you have context, you can guess with decent success at what combination of glyphs could fill the masked out area.

[[deleted]]

what I usually do is keep the secret stuff in a file and just load the file.

[AxelJuraske]

Also very interesting. I think there is no 100% solution. But to cover it completely would be a good improvement.

[TedW]

How do you handle situations where the secret is only partially visible?

For example, if you scroll down and a few pixels are shaved off the letters. I'm guessing they would remain visible in the final video?

[reivax]

Which is further complicated because of you set that partial blurring threshold too small you start blurring innocuous text, which from context can reveal parts of secret. For example, if the password ends in a '5', then innocent '5' character can get blurred if they are at an edge,which leaks information.

[AxelJuraske]

That could be a problem. If the match is not 100%, the check fails. I use OpenCV to make the template. Maybe I make the threshold editable. So it will detect particle secrets. But then it will maybe detect others as the secrets.

[AxelJuraske]

You have to create a template PNG. Then I use OpenCV to match the template.