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Audio crackle through Compressor.
I’m getting an audio crackle I can’t zero in on. I’m working with an 8bit uncompressed SD timeline, four channels audio, all levels close to original settings, not over-modded or jacked up. I’m exporting off the timeline to Compressor and using an Episode scheme in Compressor – .mov files, .h.264, 64/48 audio. The final .mov file has a light audio crackle to it. When I bypass Compressor, meaning export a uncompressed QT file off the timeline and then open that in Episode independently, and then compress with the same scheme, the audio is clean. But that’s the hard way and not why I have Episode. I don’t have any audio settings set in Compressor, outside the Episode scheme, at least as far as I know. Seems to be a consistant problem with other files, all with different audio levels. Any thoughts?
I’m running FCP6 on OS 10.4.11 on a dual 3.0 MacPro with a Kona LHE card. Mackie mixer. Episode 5.1.1.
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1 Reply
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If two of the 4 tracks are being summed to a stereo left and 2 to a stereo right track, perhaps the sum of the tracks is causing clipping. As an experiment, nest the 4 tracks and lower the nests audio by 10db and see if the audio still crackles. If not, then you need to lower each tracks level by a few db. It may be trial & error.
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.5 QT7.5.5 Kona 3 Dual Cinema 23 ATI Radeon HD 3870
ATTO ExpressSAS R380 RAID Adapter, PDE Enclosure with 8-drive 6TB RAID 5
24″ TV-Logic Monitor
Final Cut Studio 2 (up to date)Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN
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