How to Convert/Downscale 4K to 2K/1080P/720P

"We're going to shoot green screen at 4k 16x9 (4,096×2,304) on the RED One. We need to downscale it down to 1920x1080p QuickTime files. Does anyone know how?" ---from forums.creativecow.net
"I just recently downloaded Philip Bloom's Canon 1DC native sample clips from his 1DC review, but I met some scaling issues when downscaling 4K to 2K/1080P in Premiere Pro CS6..." ---from dvxuser.com
"Is it technically possible to have a firmwire which will downscale the footage from 4k to 2k ,or 3k etc. in 4:4:4:4 in Redcode or 4:2:2 Apple ProRes?" ---from reduser.net
"I've just downloaded some 4K movies from YouTube but I can't watch it on my iPad 4, can anyone help?" ---from Yahoo Answer

It seems that downscaling 4K video to 2K/1080P/720Pwould be a technically tricky issue. Even though those professional workflows or NLE systems like Red Scarlet-X and Premiere CS6 can't (or are very difficult to) achieve this goal. Well, don't worry! No matter you want to convert 4K to 2K in ProRes or get 4K downscaled to 1080P/720P for smoothly playback on your mobile devices like iPad 4, just keep reading this post, which provides you the easiest way to convert/downscale 4K video, 4K footage, 4K program, etc. to 2K/1080P/720P in ProRes or any other popular format, without cropping off the original image, and with the best video quality kept!

Preparation

For preparation, you need to get a professional 4K Video Converter to help. Recommended free download is provided above. Here we use the Windows version for illustration. For Mac users, please download the 4K Video Converter for Mac Below is a step-by-step tutorial on how to convert/downscale 4K to 2K/1080P/720P:

Import the 4K videos to the converter

First and foremost, add the source 4K videos to the program. You can either directly drag and drop the files onto the main panel, or click the "Add Files" icon to locate the videos. You can add and convert more than one file at a time.

Choose output video format

This smart 4K Video Converter provides a scale of optimal output video formats and presets for all popular mobile devices, applications, etc. Before downscaling the 4K videos, choose one of the output formats as per your need. For example:
To convert 4K to 2K in ProRes, choose "Profile" >"Final Cut Pro" > "Apple ProRes 422 MOV".
To get 4K downscaled to 1080P/720P for playback portable devices like iPad mini, choose "Profile" > "Apple Device" > "iPad mini(*.mp4)″.
For any other format, just browse or search the it in the list.

Set output resolution

OK, now you can set the exact output video resolution. Press the "Settings" button beside the "Profile" bar, a pop-up window where you can set the video resolution will appear.

Start downscaling 4K

After all the settings are done, finally you can begin to downscale the 4K videos. Hit on the big green "Start" button on the lower right, and then the smart converter will automatically launch and finish the conversion for you. Generally speaking, 4K videos are very large in size, so please be more patient for the conversion.