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Sandra Marszałek
4k to FHD
on Jun 16, 2018 at 7:44:05 pm

Hi everyone!

I have 3 different camera footage on my timeline.
Two of them are 1920x1080 25p
One is 4096x2160 50p

I need to make a 1920x1080 25p out of the whole thing so I scaled / downgraded 4k to 1920x1080.
I unchecked the "maintain aspect ratio" on 4k clips. It all went smoothly but now client says those 4k parts are to much stretched :/

Is there anything I can do to make it look more like the original one? I have no other ideas. I did it like that hundred of times and it's the first one something is wrong for the client.

Any ideas?


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Francois Pénzes
Re: 4k to FHD
on Jun 17, 2018 at 1:07:22 pm

Hi Sandra

Frame size (or resolution) and aspect ration being two different things, you don't want to uncheck "maintain aspect ratio".
A 4K file can have different aspect ratio. Notice that only 2 of them have a ration of 16:9.



As you stated, you may have done this before and not notice the small variant in aspect ratio. Here is one way to do this.

Original ''4K'' file, imported in 1920 X 1080 project



Go to Track Motion and adjust to fill final frame size. I like to use this because sometimes you want to keep some visual info that is to one of the sides of the frame.



Some parts of the image will be lost.

End product file :16:9 (1.77:1)

Your 4K file: 1.90∶1 (256∶135)

That is why you have black bars when it is imported to your 16:9 project.

I hope that I have not been to technical...

Cheers !

PC Win 10 Pro 64-bit 16gb Intel® Core™i7-2600k Quad Core 3.40GHz
Cameras: Canon XF305 + Canon XH-A1
Blackmagic HyperDeck Studio Mini
Vegas Pro 14, User since Vegas 3.0

''When the cutting stops, the editing begins...''


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