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Audio files change after editing
I’ve had this problem before and it’s very frustrating. After editing multi-track audio in FCP 6, when the app is quit and the file re-opened, FCP has change, moved and altered the files. They appear to be in the same place in the sequence but it’s as if they’ve “slipped” time, and some levels have been ignored or turned all the way down. I’ve had some files that have had this happen every time I re-open them, I have to go back and re-adjust levels and edits.
Anyone have any ideas?
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7 Replies
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I have never seen any behavior like this…
But taking an educated guess… Would you be using MP3 or some other compressed audio? If so, you should convert to AIFF 48k -
When you say multi track audio, do you just mean lots of tracks or using files that are multi channel, like say a 6 channel broadcast wav.
Also have you done the usual preference, permissions maintenance?
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That’s what I thought too but I always convert everything to Aif. I have trashed the preferences I’ll look into the permissions – I don’t right off remember how to do that.
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This is just audio files layed in and edited (like editing sections out of a song and re-mixing it. But it’s happened before with a mixture of music and dialogue tracks.
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As John mentioned, make sure all files have a sample rate of 48khz and check that your sequence settings are also on 48khz.
FCP is most happy with 48khz for sequence and files and all digital video audio should be at that sample rate anyway.
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Michael,
I’ve had the same issue on occasion on my system (all versions going back to 4.5) and just this AM a colleague experienced the same thing (an occasional thing for him too.)
I appreciate the value of high quality AIFF 48kHZ source as well and use that as the exclusive format of choice… yet the problem arises anyway. Seeing the prevalence of the issue, I’m inclined to believe it is a real and significant problem that deserves attention from the development team at Apple.
Good luck,
Tim
Tim Bird
tim@Blast-Edit.com
Blast Editorial Services, LLC
Richardson, TX 75081
MacPro 2.66, FCStudio 3, Adobe Production CS3 -
You can also try Mixdown Audio: Sequence menu > Render Only > Mixdown. This renders your audio mixing it down according to how you have it in your sequence. All your files stay put. It just takes a lot of overhead off the processor so the audio plays more reliably.
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 7.0.1, Motion 4.0.1, Comp 3.5.1, DVDSP 4.2.2, Color 1.5.1)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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