You can't use a 5.1 output when you also need a stereo mix. You must use a MultiChannel sequence. Then you just need to route the tracks to the outputs they need to be on. 3+4 means it will be output to 3+4. Want it on 3 only? Pan it left. Want it on 4 only? Pan it right. Want it on 1+2 in addition to 3+4? Add that, while keeping 3+4. Etc. As I tried to show with my images. I highly recommend that you do this in the Audio Track Mixer in a Multichannel sequence, and then use the Import from Sequence option in the New Sequence dialog to create a preset for future use. Ch. 1+2: Stereo Mix: Route all the tracks that make up a stereo mix here. Pan htem left/right as needed Ch. 3+4: Dialogue: Route only dialogue tracks here. Pan on left and one right. Ch. 5: Left: Route what needs to go to Left/Right here, and pan Left Ch. 6: Right; Route what needs to go to Left/Right here, and pan Right Ch. 7: Center: Route what needs to go to Center here, and pan Left Ch. 8: LFE: Route what needs to go to LFE here, and pan Right Ch. 9: L Surround: Route what needs to go to Surround here, and pan Left Ch. 10: R. Surround: Route what needs to go to Surround here, and pan Right Ch. 11+12: M&E: Route M&E Tracks here, and pan Left/Right If this doesn't help you understand this, I recommend that you hire someone to do this setup for you and create a sequence preset. You must understand that ALL audio tracks are essentially really just MONO. Stereo audio is just two mono tracks tagged as lef and right stereo tracks. A ProRes file doesn't really have stereo and surround tracks. It can only do mono tracks, which can be tagged as whatever you want, but they're still all mono tracks. To make this surround mixing session meaningful, you also need to route your audio output monitoring correctly in the Audio Hardware Preferences, so you're listening to the mix in the correct manner. It's a bad idea to put right surround output into your subwoofer. 🙂
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