"I am doing some inspire 1 4K video editing, I see my desktop is very powerful, however, when I palyback the video in Premiere, it's very choppy, and not easy to do the editting.Does any pros have any idea on 4K in Premiere workflow? Much appreciated!!"

Literally, the latest version Premiere Pro CS6, CC7 has the ability to handle 4K files without much problem, but it is extremely hardware intensive owing to the codec issue and resolution. To solve the problem, you need to convert DJI Inspire 4K videos to MPEG-2 for Premiere Pro as primary delivery format. With the help of Brorsoft Video Converter for Mac, you can easliy achieve the goal.
In general, you can effortlessly encode DJI Inspire 4K MP4/MOV footage for smoothly importing and editing in various non-linear editing systems (NLEs), including Adobe Premiere Pro, Avid Media Composer,Final Cut Pro, iMovie, FCE and more. Besides, DJI Inspire clips, it also can deal with other video formats such as MKV, MTS, MXF, FLV .etc. If you are a PC user and willing to transfer DJI Inspire 4K files to Premiere, Brorsoft Video Converter Windows version is your first choice. Now, download the software on computer and follow the guide below to start conversion.
How to Convert DJI Inspire 4K videos to MPEG-2 for Premiere
Step 1: Click "Add" button on the top of the main interface to load original DJI Inspire 4K videos to the program. Or you can simply drag&drop the videos to the software.

Step 2: Go to "Format" pull down list to select Adobe Premiere/Sony Vegas> MPEG-2(*.mpg) as the best video format for Premiere Pro. WMV, MOV formats in this column are the good choices as well.

Tip: Click the "Settings" button, you are able to enter the "Profile Settings" panel to adjust video and audio parameters for the converted files, including video size, bit rate, frame rate and more.
Step 3: Tap the Convert button to start transcoding DJI Inspire 4K MP4/MOV to MPEG-2 for Adobe Premiere Pro.
Once the process completes, you can find the generated videos via "Open" button. Now, it is easy for you to transfer the encoded 4Kvideos to Premiere for further editing.
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Source:Convert DJI Inspire 4K video files to Adobe Premiere friendly formats