Want to import your HD/4K MKV video downloaded from online video streaming sites or ripped from 4K/HD Blu-ray or HD DVD disc into FCP X for some professional editing. From Final Cut Pro supported file formats, we can see the MKV is not the supported container file format by it. In addition, the video or audio compression codec that contains in MKV multimedia container file may also not be supported by Final Cut Pro X. To successfully load HD/4K MKV files into FCP X, you will need to perform a format or codec transcoding process, but which is the best or proper editing format for Final Cut Pro X?


Supported video and audio file formats by Final Cut Pro X


Video formats: Apple Animation Codec, Apple Intermediate Codec, Apple Prores, AVCHD (including AVCCAM, AVCHD Lite and NXCAM), AVC-ULTRA (including AVC-LongG and AVC-Intra Class 50/100/200/4:4:4), DV (including DVCAM, DVCPRO and DVCPRO50), DVCPRO HD, H.264, HDV, iFrame, Motion JPEG (only OpenDML), MPEG IMX (D-10), QuickTime,REDCODE RAW (R3D), XAVC (including XAVC-S), XDCAM HD/EX/HD4222, XF-AVC
Container formats: 3GP, AVI, MOV (QuickTime), MP4, MTS/M2TS, MXF
Audio formats: AAC, AIFF, BWF, CAF, MP3, MP4, WAV


Although Final Cut Pro X has enhanced media compatibility for various container file format and editing format. However, different editing format will bring you different editing experience. If you have enough time and energy, you can test all of of the supported file formats listed above one by one. If you unwilling to spare your precious time for that testing, then we highly recommend you to encode HD/4K MKV to Apple Prores formats, which has the following advantages when comparing with other editing format:

- Supports all of the current frame size such as SD, HD, 2K, 4K and 5K
- Encoding with variable bitrate to be economical with video storage, without damaging the visuals.
- Best codec choice for any work relating to a project that needs a quick turnaround time
- As a 10 bit codec, Apple Prores can process a lot of more color data and make the color correction process easier.


Best way to encode HD/4K MKV to Apple Prores for FCP X


To encode HD/4K MKV to Apple Prores, what you need is a powerful Apple Prores Converter - Pavtube Video Converter for Mac. The program has full support for both HD or 4K MKV files compressed with various different compression codec such as H.264, H.265, MPEG-1, MPEG-2, MPEG-4 (A)SP, VC-1/WMV, Real Video, MVC, etc. You can use the program to directly produce Apple Prores codec in various different file types including Apple Prores 4444, Apple Prores 422, Apple Prores 422, Apple Prores 422 HQ, Apple Prores 422 Proxy and Apple Prores 422 LT.  


How to choose the suitable Apple Prores format for FCP X?


If your editing workflow involving alpha channels, Apple Prores 4444 can be the best choice. In addition, this codec also helps to save a ton of hard drive space retaing the highest possible image quality and color fidelity. If your Mac computer is old or slow, or you just want to do some rough editing, you can select to output "Apple Prores Proxy)(*.mov)"or "Apple Prores (LT)(*.mov)"format to save more space and bandwidth. However, if your computer are powerful enough to handle multicam and high-resolution video and you are going to do many effects editing work with FCP X, you'd better choose to output "Apple Prores 422(*.mov)"or "Apple Prores 422(HQ)(*.mov)"for better performance.


Edit HD/4K Video with built-in editing functions


Before loading HD or 4K MKV video into FCP X, you can do some simple video customization work with your video footage. If you don't want to convert the entire video footage, you can use the trimming tool to cut away unwanted segments from the video, if there are black edges around your video frame, you can use the cropping tool to remove them off. You can also add transparent text watermark to video footage, apply special rendering effect, add external srt/ass/ssa subtitle to video.


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How to Convert HD/4K MKV to Apple Prores for FCP X Editing?


Step 1: Import HD/4K MKV 4K videos.


From "File"drop-down option, select "add Video/Audio"to add HD/4K MKV video files to the program. 

Tips: If you want to batch load multiple files, make sure to store all your files in the same folder, then click "File" > "Add from folder" or press the "Add from Folder" button on the top tool bar to batch importing them into the program.


Step 2: Define the output format.


Clicking the Format bar, from its drop-down list, select one of your desired Apple Prores format according to your own needs and situation.



Step 3: Edit HD/4K MKV with built-in editing tools.


Select an item on the main interface to activate the "Video Editor" function, in the opened "Video Editor" window, you can trim or cut off video length, crop to remove black frame, add transparent text watermark, apply special rendering effect, insert external subtitle to it.


Step 4: Start the conversion process.


Go back to the main interface, hit right-bottom "Convert" button to start to convert HD/4K MKV to Apple Prores with your desired file formats for best editing workflow with FCP X.

When the conversion is completed, feel free to import video to FCP for professional post-production workflow on either powerful or slow computer.