Summary: Follow the guide below and you will know how to import Sony XDCAM EX MP4 to Final Cut Pro 7/X without rendering or any other problems on Mac OS X(Mountain Lion included).
Sony XDCAM EX camcorders like PMW-EX3, PMW-200, PMW-EX1, PMW 150, etc are great for us to take high quality full HD videos. If you have got one and often use it to record 1080p video, you may have the need to edit the generated XDCAM EX MP4 files in Final Cut Pro on Mac. While, it’s a common sense that FCP cannot natively support the raw XDCAM MP4 video, the best supported video format for FCP is Apple ProRes 422.
The best method to solve this problem is to convert Sony XDCAM EX MP4 to ProResfor for editing in Final Cut Pro 6/7 and FCP X. You can follow the steps below to complete your task. First of all, get Brorsoft Video Converter for Mac. It will help you convert Sony XDCAM .mp4 files to ProRes for FCP on Mac at fast speed without quality loss and more import and output formats are also supported.
[How-To] Transfer the raw Sony XDCAM EX footage in MP4 to Final Cut Pro
1. Download, Install and launch this XDCAM EX to ProRes Converter. Then, import Sony XDCAM EX MP4 footages to the converter.
2. Click format bar to choose the output format. Click and choose Final Cut Pro -> Apple ProRes 422 (*.mov).
3. You can click "settings" to customize the output parameters, adjust the resolution, bitrate as you want.
4. Click convert button to start transcoding Sony XDCAM EX MP4 to ProRes for FCP on Mac.
After conversion, you can import Sony XDCAM EX video files into Final Cut Pro without any trouble.
1. You can also find more tips and tricks on Final Cut Pro in Brorsoft FCP column.
2. If you got Sony XDCAM EX footage in MXF, you can also link to Import MXF files from Sony XDCAM/XDCAM HD/XDCAM EX to FCP to solve the Sony XDCAM MXF to FCP issues.
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Source: How to solve issues Sony XDCAM EX files not working FCP