Hello guys,
im new here , i had some ideas for some creations and i should work with footages .
I cant shoot them and i found a website that apparently is used a lot here (Pixaay) .
I read that videos are free to adapt and use them for commercial purposes
without attributing the original author or source and they are released under Creative Commons CC0.
So even if its obvious to me but i have to ask to be sure ,
Can i use those videos for comercial purpose on videohive ? and those videos will be also in the project file.
Thanks in advance 
CC0 in simple words means that it is Public Domain and can be used for anything. So yes, a CC0 license allows you to incorporate the footage in your project and also include its original source in the zip.
However, if it ever turns out that the original creator of the footage has never agreed on it being released under CC0, you are liable for copyright infringement.
What Creattive said. But keep this section of their terms in mind…
c) Certain Images or Videos may be subject to additional copyrights, property rights, trademarks etc. and may require the consent of a third party or the license of these rights. Pixabay does not represent or make any warranties that it owns or licenses any of the mentioned, nor does it grant them.
Like in this example…
https://pixabay.com/en/videos/rocket-launch-thrusters-nasa-236/
The NASA terms state that you’re not allowed to use the NASA logo for commercial purposes without permission. So although you’d be fine including that video in your item according to the rules of CC0… you would actually be infringing on the copyright of NASA. So it’s a tough one. In theory, yes, but be careful, so you don’t get in trouble.
Thanks guys for your replies i really apretiate , its not really what i wanted to hear haha . I dont want to do something without being sure its 100% legal. How can we get a license from the real author for being sure , what are the steps i shoud do ?
Thanks again
I just want to add that the footages i choosed dont have any logos or people on them , just some animals .
Yeah, if you make sure you avoid logos and people then that should considerably minimize any risk. I guess you can never be certain though.
You can never be sure where the images from pixabay etc really come from. Given that there is a donate button besides each photograph, some people may take their time to upload all sort of images they found via google on that platform in hope someone donates money to them.
The only way you can really be certain that you can use the image/footage is if you shot it yourself.
Thanks guys for your advices , i think this is what i will do, wait until i can shoot my own footages.
Its also good when you do a work all by yourself .
Thanks