At present, there are no MXF Exporter can directly export multiple tracks as individual channels in a MXF-file. PP always mixes down all audio channels to the channels 1 & 2. The 8 audio channels exists in the exported material, but only channels 1 & 2 have audio, the other are blank. A friend have tried to export the video created with Premiere to FCP and then export the finished product in MXF format with 8 channel of audio. But it’s too much time wasted. Here is a "light" in relation to the multiple audio tracks exporting under the situation that you edit multi-stream MXF file in FCP. Aunsoft TransMXF Pro for Mac, is the only completely Multitrack audio Exporter to preserve, separate and mix multiple audio tracks from original MXF. No matter MXF footages from Panasonic P2, Canon camcorders are recorded with 2, 4, 8 or more audio tracks, you can easily preserve all tracks or get separate channels of audio in MXF.
With TransMXF Pro for Mac, you can transcode MXF to multi-track ProRes MOV for FCP natively editing. Besides, you can also export multiple audio streams from MXF to MKV and MP4. Below is a simple tutorial to convert MXF to FCP X with exporting 8 audio channels in MXF. With the advanced audio and video synchronization technology, the output file will with video and audio in perfect sync.
Step 1: Add MXF files to the Multitrack MXF Exporter
Click "add video" or "add folder" to load multiple audio channels. You can also directly drag files to the program. The program supports batch conversion and allows you capture images.
Step2: choose the output format
Click the "format" and choose the "Multi-track Video -> Multi-track Apple ProPres 422(*.mov)" files as the output format.
Step3: Set multi-task settings
Click "settings" to preserve multiple audio tracks in original MXF. The screenshot shows 4 tracks of audio, if your source MXF with 8 tracks, you will get 8 channels here. You have more choices, if you don’t want to keep all audio tracks, you can uncheck undesired ones. And you also can mix multi-audio tracks into individual track.
Step4: Convert MXF files into multiple track MOV
Click "Start Conversion" icon, TransMXF Pro for Mac will convert MXF to multiple audio tracks MOV with high quality. You can preview output file when conversion completed.
This conversion program can be easily found via Google with keywords "Aunsoft TransMXF Pro for Mac"