-
Phantom audio pops in FCP 7
I’m a working on an FCP 7 project with 10 audio tracks and am experiencing a phantom pop at a specific place in the timeline.
Here’s the weird part: I can not isolate the pop. When I turn off any one of the tracks, the pop disappears. It doesn’t matter which track I turn off, the pop disappears. The pop also does not appear on any of the original tracks. I’ve tried replacing each and every one from the viewer to no effect.
Also, if I play 15 frames before the pop, I don’t hear it.
When I output there’s a colossal sound explosion at the pop point in the timeline.
I’ve done the obvious things, trashed preferences. Deleted audio waveform cash and render files. But nothing works.
I’m losing my mind and have to finish on Tuesday. Any help would be very much appreciated.
FCP 7 and 10.6 both up to date. Quad-core MacPro with 16G RAM
-
13 Replies
-
Sounds like it might be a corrupt sequence.
I would highlight all of the clips in the timeline (video & audio) then copy/paste them into a new timeline.
Bob Auiler | bob.auiler@mvpcollaborative.com
-
Is this happening at a cut? If so, apply a 2-frame dissolve on the audio tracks across the cut. You may not have to do that on all tracks. Also, try a mixdown audio. Choose Sequence > Render Only > Mixdown (or pressCommand-Option-R). This creates a render file of your timeline audio. It makes no change to your actual tracks.
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
-
Thanks guys. I will try your suggestions tomorrow and let you know. Again, thank you.
-
Where does the audio in your timeline come from.
Video file?
Music fille?Hindsight is always 1080p
-
Music files and ambient sound. Not married to the video.
-
[Eric Maierson] “Music files”
What file type?
Hindsight is always 1080p
-
make sure all audio in the timeline is 16 or 24 bit wav or aif files at 48khz sample rate.
Pops are often caused by 44.1khz files or more commonly by mp3 or other compressed file types.
-
sending the sound file into soundtrack pro fixed my problem. I started with an mp3 file at 44.1 bit and changed it to an aiff file at 48 bit. phantom popped disappeared!
-
Hello! I know this is an old thread, but I was dealing with this same phantom audio pop problem today and found a brilliant solution on another forum that I thought I’d pass along.
Try quitting FCP and trashing some of your caches. I trashed the waveform cache, audio render files, and also the render files just for kicks, and ta-da! No more pops! It might
Trashing databases and render files proved to be a useful daily activity when working in Avid (I worked in MC 2.8, not exactly the best version ever). This is the first time I’ve ever had to worry about it in FCP, but I guess no NLE is perfect.
-
Hey there,
This may not be fix, but I had/have the same problem.
I have one main video (canon 550d footage), with it, was the internal camera audio which had a sample rate of 48.0KHz.
The sequence settings are set to 44.1 because all my externally recorded audio was recorded that way, so i figured it’d be easier to change that than convert all my audio to 48Khz.because my footage was recorded with 48KHz audio attached, will the video playing at a different speed in my 44.1 project? surely audio sample rates cannot affect video play speed?
Anyhow heres my fix(ish)
Any of those phantom clicks/pops went away when I reconnected the media back to the original sound file.
from Cosmo
Reply to this Discussion! Login or Sign Up