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Audio Mixer: How to Mix multiple audio tracks into one track on Mac?

“I've been having a heck of a time trying to combining 4 tracks of my client’s P2 MXF material into 1 track. The reason I want to do this is so that I may export all 4 tracks into one audio file and meanwhile package them into a MP4 container for delivering. How do I do this? Could someone please give me some advice? I’m running on a new Mac OS 10.9 Mavericks”
mix audio
In such a case, Pavtube iMixMXF is helpful. By using this software, you are able to combine all tracks onto one track and will be able to export all of the mix into MP4 at one time.
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Audio Mixer: Mix multiple audio tracks into one track on Mac Mavericks

Follow these steps:

1. Start up Pavtube iMixMXF, load MXF clips into it through either “Add video” or “Add from Folder” button.
combine audio tracks into one  
Kindly note: For MXF videos from Panasonic P2 card, you can directly import the MXF video and the audios (either multi-track or not) will be automatically detected and imported to match the MXF video.

2. Select “Multi-track MP4 (*.mp4)” as target format under “Multi-track Video” catalogue
mix audio channels
More than “Multi-track MP4 (*.mp4)” format, Pavtube MultiMixer can also export MKV, MOV and Apple ProRes MOV format with multiple audio tracks and channels for broadcasting, further editing, delivering and playing. You can either choose to keep multiple audio tracks in these containers or mix them into one audio track at a time.

3. Check “Mix into one track”
In the main interface, press “Settings” button, and then “Multi-task Settings” panel pops up. Switch to “Audio” section, check the audio tracks that you want to mix down, and tick off the checkbox before “Mix into one track”. After that, click “OK”.
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4. Mix multiple audio tracks into one track and package them into MP4 container
In the main interface, click “Convert” button convert icon to start conversion. The iMixMXF program will take care of the rest to mix all your checked audio tracks down into one track and put them into the MP4 container. 
mix audios into one
The “Conversion” window pops up as soon as you click “Convert” button, on which you can find conversion information like Time elapsed, Time left, Generated size, and Estimated size.

Tick off “Shut down computer after conversion option”, you can leave the program running and do other things instead of waiting around for the conversion.

When conversion completed, you can click “Open output folder” to popup output directory with the converted files.

Note: If you are using a trial version, there will be Pavtube logo watermark in the middle of output files. To get rid of the logo watermark and get better performance, please click Help > Register > Order to buy iMixMXF full version.

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