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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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What are your export settings?
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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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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:
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This is what I have:
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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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12.1.2 build 69
It happens with any format I try to export to.
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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.