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FCP and DVD Studio Surround Sound
I am trying to figure out how my surround audio keeps being out of sync once it hits DVD Studio.
I’ve got the sequence in FCP with all the tracks split out in sync with the video. I export mono tracks for the surround, which I then take into compressor and make a surround group from. I apply the 5.1 setting and compress.
I take the encoded video and 5.1 audio into DVD Studio and after the first 15 minutes of the hour long concert, the surround audio is way out of sync.
I’ve checked the exported tracks from FCP by re-importing them and laying them in the timeline and sync is spot on the whole way through.
I think something is happening on the 5.1 encode, perhaps some setting I am not seeing, that is causing the issue?
Audio and sequence in FCP are set to 44.1, as that is what was recorded during the show through Pro Tools.
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2 Replies
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Audio in FCP (and most pro NLEs) should be 48kHz. This is probably yhe root of your problem. Try using QT Pro, Soundtrack Pro, or MPEG Streamclip, etc. to convert the 44.1 to 48k and retry in DVDSP.
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.8 QT7.6.4 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24″ TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 3 (FCP 7.0.3, Motion 4.0.3, Comp 3.5.3, DVDSP 4.2.2, Color 1.5.3)Pro Tools HD w SYNC IO & 192 Digital I/O, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
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I figured it out, turns out the video was different in my stereo and surround sequences, thus when the surround audio was put up against the picture from teh stereo sequence, sync was off after a small change was made to picture at different points in each sequence. The stereo picture was compressed for DVD which obviously did not match the surround audio.
A very stupid and very costly mistake on my part.
Live and learn I guess.
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