Premier Pro Won't Export Multiple Audio Channels

New Here ,
Jul 21, 2021 Jul 21, 2021

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Self taught user.  For years I've been able to export Pro Res files as MFX files with multiple channels of audio.  Starting today when I go to output my 8 channels they are mixing down to 2 channels.  The settings I have are:

MFX OP1A

XDCAM HD 25 PAL 50I

Loudness Normalization EBU R128

Stream 1 Stereo Source Channels 1-2

Stream 2 Stereo Source Channels 3-4

Stream 3 Stereo Source Channels 5-6

Stream 4 Stereo Source Channels 7-8

Audio Channel Channel, 24 bit

 

Both in my original project and new sequence the 8 channels play and show in the audio mixer.  I've never had this happen before and I've spent the last 2 hours trying to fix it.

 

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Audio, Editing, Export

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Adobe Community Professional ,
Jul 21, 2021 Jul 21, 2021

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What are your export settings?

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New Here ,
Jul 21, 2021 Jul 21, 2021

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The origianl file is:

Apple Pro Res 1080I/50

9 channels of audio

 

Exporting to:

MFX OP1A

XDCAM HD 25 PAL 50I

Loudness Normalization EBU R128

Stream 1 Stereo Source Channels 1-2

Stream 2 Stereo Source Channels 3-4

Stream 3 Stereo Source Channels 5-6

Stream 4 Stereo Source Channels 7-8

Audio Channel Channel, 24 bit

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Adobe Community Professional ,
Jul 21, 2021 Jul 21, 2021

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Make sure that your Mix track in the timeline is set to Multichannel with a matching number of Channels. If set to Stereo you will get everything mixed down to two channels.

 

You do not want this icon on the Mix track:

Averdahl_0-1626900957131.png

 

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New Here ,
Jul 21, 2021 Jul 21, 2021

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This is what I have:

internationals78235414_0-1626903209060.png

 

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Adobe Community Professional ,
Jul 21, 2021 Jul 21, 2021

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What version of Premiere? Have you recently updated to 15.4 and now it doesn't work? Does it work with another format? ie. not XDCAM MXF.

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New Here ,
Jul 21, 2021 Jul 21, 2021

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12.1.2 build 69

It happens with any format I try to export to.

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Adobe Community Professional ,
Jul 22, 2021 Jul 22, 2021

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I presume in the 'Audio Track Mixer' panel, you have the channel assignments set correctly ( button directly under the panning control). If they all say 1-2 then that would explain it.

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