Hi guys! Trying to render with transparent backgroud but I cannot find the way in ultra high defintion. Is there someone who can help me

Thanks

Render as a PNG sequence and you'll just need to put it together through a video editor to make it a video file. Nearly any video editor should be able to make it into a video file.

If you are just meaning a single picture. Just render as PNG, but you'll need to remove any background or background images if there is one in the project settings.

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Thanks  a lot!I was rendering as video on png sequence but the black background is still there. Is it anyway to get rid of the black backgound in an easy way?  Because it is a 9 minute video. Thanks a lot!

In the project settings. Make sure activate image is not selected. 
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Render as Image, PNG, Sequence
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They may show as black or white in your folder explorer. 
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But if you open them up with an image editor. I'm using gimp. You will see that they are indeed transparent.

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