How remove white watermark text in Video assets?

[Todd Kopriva]

Ask the person or company that owns the rights and placed the watermark there to give you a version without the watermark.

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Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog
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[John Cuevas]

Legally buy the footage—don’t come here and ask questions trying to get advice on how to break the law.

Johnny Cuevas, Editor
Thinkck.com

“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.

[Alejandro Castan]

Hi All,
First, sorry for my question and maybe I do not explain very well what I want to do but I do not want to break the law.
The video that it has the watermark text is a old video in YouTube. and the watermarks appears here because this one was converter for one program named isotter that it does not exist anymore and if it would exists right now, I would buy the software to remove this watermark text
more info here
https://www.youtube.com/watch?v=yeVJezkB0FI

Finally, I would like to say I am not interested in getting some money for it, I only want to extract a little piece of it to add to a video that I am doing at the moment for the hobby.
Hope you can understand and sorry if I was not very clear in my post

Regards
Alejandro