Trouble with Stereo to Dual Separate Mono Channels for Quicktime Playback

[Jerry Hofmann]

You need to un “stereo pair” them to create two mono tracks, then pan them both to one side or the other. This should work… Have you tried just that?

Jerry

Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann

Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup

8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.

[Jon Fawcett]

Hi Jerry thanks

I hear what you’re saying – I will try it as I don’t think I split them individually yet

BUT I have a feeling it will only give me partial success –

I have been experimenting and have hacked things up and now have a very simple timeline with just two separate audio tracks, dual mono, panned and supposedly assigned to separate tracks

AND

while I do get a distinct ‘one is on left, one is on right’ result, there is still SOME bleed from one track to the other, i.e. I hear each one faintly on the other track, like they are not fully panned. But they are.

That’s weird no?

Jon

[Jon Fawcett]

As I suspected – your tip did me well, but still get this bit of ‘bleed’ or semi-mixdown (whether stereo or dual mono is selected, and whether mix down is 0 or off, in ‘Audio Outputs’)

How annoying/nearly there/not there at all!

Any more ideas?

[Phillip Van west]

Are you doing Audio Mixdowns (OPT-CMD-R) after each of these changes?

pvw

Phil Van West
Terra Nova Productions
Denver, CO
Video Production/Post-Production

Mac Pro 8-core 2.66GHz / 16GB RAM / OS 10.6.7 / FCP 7.0.2 / QT 7.6

[Jon Fawcett]

I wasn’t, but having done so it doesn’t change anything…

[Jerry Hofmann]

well…. try mixing the two tracks down to one. export it as such…. then pan that single clip.

Jerry

Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: https://blogs.creativecow.net/Jerry-Hofmann

Current DVD:
https://store.creativecow.net/p/81/jerry_hofmanns_final_cut_system_setup

8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX – Cinema Displays I have a 22″ that I paid 4k for still working. G4 with Kona SD card, and SCSI card.

[Jon Fawcett]

That’s what I did already, if I get your meaning – I deleted one track from each of my existing stereo tracks, so I just have two mono tracks, panned left and right, _1 and 1, and I still get that ‘bleed’. It’s weird huh?

[Jon Fawcett]

SOLVED IT!!!

For anyone else’s information:

I was working on this at home on the LAPTOP (Macbook Pro). My girlfriend was using my headphones for something she was working on.

***The audio card in the Macbook Pro overrides the settings of any audio file, and part-mixes left and right tracks – WHEN PLAYING THROUGH THE INTERNAL SPEAKERS of the laptop

stupid but true

I guess its a consumer sound quality issue, fair enough. I should have tried with headphones/monitors

Got there in the end, thanks everyone for your help

Jon

[Jon Fawcett]

Final summary:

1. Un-pair stereo tracks by alt+L
2. Pan them manually by selecting and ctl+, for left, ctrl+/ for right
3. For output to Quicktime, make sure your audio settings are ‘Channel Grouped’, and your Audio Output is set to Stereo (Quicktime will self-mix dual mono tracks back to stereo)

Voila

[Christopher Allen]

Hi there.

Having this same issue. Did the steps you took resolve the issue on the Macbook laptop?

I am hoping to play back through FCP to dual stereo output through heaphone jack. Is this impossible?

Have a tech rehearsal tonight for this, so thanks in advance for any help you can offer!

Christopher