"I have a client who is supplying me with raw files in .webm format. I've played around with a few conversion programs and settings and getting huge, really huge, files, and long, long conversion times. Ideally, I'd like to import these webm files to Final Cut 7, edit, then export as H.264, but I'm open to suggestions."

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Offering high definition video quality, WebM files save much space with the smaller file size than other web video files including FLV. But the WebM format is only for HTML 5 websites to stream videos online and few portable devices and players currently support playing this kind of files. That's to say, if you have downloaded some WebM videos on your Mac OS X (macOS Mojave included), you can neither transfer WebM to iPhone, iPad or other devices for playing on the move, nor import WebM into Final Cut Pro, iMovie etc. for editing.

To transfer WebM videos to Final Cut Pro for editing smoothly, the easy workaround is to convert WebM to a more editing-friendly format, such a Final Cut Pro's ProRes, which ensures the best results when working with FCP X/7/6. EaseFab Video Converter for Mac is the solid tool to help users make the WebM to ProRes transcoding on Mac OS X (macOS Mojave included).

With it, you can effortlessly encode/re-encode WebM files to FCP highly compatible ProRes MOV, ensuring maximum editing quality and efficiency when working with Final Cut Pro X or FCP 7. Besides, its also exports advanced encoders like Apple Intermediate Codec, DNxHD, etc. allowing you to convert video to seamlessly fit iMovie, iDVD, Adobe Premiere, Avid Media Composer, etc. If you're editing with Final Cut Pro, chances are you already installed this great utility. If not, download it from here and follow the step-by-step guide below.

Free download WebM to ProRes Converter for Mac:

Guide: Converting WebM files for Editing in Final Cut Pro

Step 1. Import WebM videos

Install and run the WebM to FCP Converter on your Mac, then run it. Click on "Add Video", and browse your files, select all the WebM files you wanna convert. This application supports batch conversion, so you can add more than one file at a time.

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Step 2. Select the output format

The Profile tray locates in the buttom of the window. Go to the "Editing Software" category and select "Final Cut Pro" (ProRes 422 codec encoded MOV) or "ProRes" preset as the output format. By selecting the "Final Cut Pro" or "ProRes" preset, you needn't to adjust the video settings like video format, video resolution, frame rate and more by yourself.

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Tip: Of course, if you're not satisfied with the settings, you can just click the "Settings" icon to customize the video/audio settings including the Bitrate of Video and Audio, Audio, Video Size, Sample Rate, Frame Rate, Audio Channels, etc.

Step 3. Start convert WebM to FCP on Mac

Once you press the "Convert" button, the Video Converter for Mac begins to work for you. Just a few minutes later, it is done.

When finished, the output ProRes encoded MOV file is ready for being imported to Final Cut Pro for editing. All FCP versions are supported, including Final Cut Pro X, Final Cut Pro 7 and Final Cut Pro 6.