popping sound at beginning of clips when in review

Hi Brian:

Try zooming in on the
i timeline
and checking to see if there is a stray bit of audio or a small empty clip of video where the "pop" is. If so just delete them.

Sue

The "pop" sound - Could it be when you drag the mouse along the timeline and you hear"pop" because the option "play snapping sounds" is ticked in preferences?
Also tick "Filter audio" on import.
Try extracting the audio on the timeline & see if the problem goes away.
Mark

Brian

If it's not as Mark explained and you're hearing the "pop" as the video is playing, then I'm afraid you're experiencing the dreaded "audio glitch" that many users are complaining about (including me). To get a full understanding of the problem, do a search in this forum - come back if you need more information.

A few questions - do you have transitions at the point where you hear the pop, have you placed a still before a video clip and/or have you faded in audio in the main video track where the pop occurs? These seem to be the most common areas where the glitch raises its ugly head (in my experience).

John

I found a way to get around the audio click. Trouble is, it's a stupid workaround. Anyway try this-drag 1 clip away from it's neighbour to create an empty space. Turn the empty space into a black clip(could be any colour I suppose) & CLICK IS GONE . like I said it's a stupid workaround for a stupid problem!
I'll keep working on a more intelligent fix!
Mark

Brian,

For whatever its worth, virtually all the popping in my iMovie preview disappeared in the iDVD burn.

Jack

For whatever its worth, virtually all the popping in my iMovie preview disappeared in the iDVD burn.

Some users have posted that the pops still show up in the iDVD burn, but to what extent I'm not sure. I haven't tried it personally as my G3 doesn't have a superdrive - also I'm unable to load iDVD (comes on DVDs not CDs). I record directly to a Pioneer DVD recorder via Firewire (using the Play through to Camera preference) and the audio glitches do transfer to the DVD unfortunately. However, this method is not a "true" export (share) but does produce excellent results (other than the glitch).

John

drag 1 clip away from it's neighbour to create an empty space. Turn the empty space into a black clip

Hi Mark - I noticed that you had also posted this in another thread. Did you see my reply?
John Cogdell, "Sound problems when adding a transition" #9, 09:56am Aug 24, 2005 CDT

John

Exctly the same annoying auido glitch here. I had two clips, I added a transition between them. The transition didnt look good so I removed it. BUt now its been removed there is a pop of sound at the start of the changeover between the clips. No matter what I do - extracting audio, moving clips etc, the popping doesnt go and its very frustrating!! Only consolation is that im not the only one!

Just as a test I also re-imptorted the clip direct from my DV camcorder inserted it into the gap i wanted, without having performed any transitions. I set the volume of the clip to 0. It still played an initial half a second burst of sound from that clip which created the "pop" sound. Very very irritating.

Danno

Once the pop appears, it is difficult to remove - even after re-importing as you've done. Your best bet may be to select then export (File>Share) the offending clips (with volume zeroed) to QuickTime at Full Quality - then re-import that to iMovie. This usually gets rid of the pop or burst of sound. Trash the original offending clips or move to the Clips Pane. This process (export/import) will cause no degradation in quality.

Note that when exporting to QT, check the box to "Share selected clips only". Also, from memory, you will lose the original video track audio for the selected clips after the process, so it's best to extract audio (Menu>Advanced>Extract Audio) from the clips before the export. The extraction will automatically lower the volume in the video track to zero for the selected clips. The extracted audio can then be re-aligned with the freshly imported video - use the Preference>General>Snap to items in Timeline/Play sound effects when Snapping to help line up the video and audio.

Hope this helps (I share your frustration!).

John

John,
I went to the other posting. The xport idea is great. So many people with varying setups having the same problem
I've only experienced once.

I zoomed in to the timeline to find out what was causing this click. It happened no matter which transition I chose. That's when I pulled apart the 2 clips ,converted the space to a black clip.
Then muted the audio of the black clip & click was gone.
It reminded me of something similar in imovie 2. If I lowered the volume of a track then hit play , the audio level would begin at the original level then abruptly drop to what I had set it in a split but audible moment.. Especially noticible on an imported song to the 2nd or 3rd audio track. Not always,,just sometimes.

I have not had a chance to use imovie today but yesterday it didn't crash once. The diffence on this 3rd complete Tiger re-install is to tick "install Classic support". Also only Slick plugins. Nobody elses.
I'm assuming that everybody with this problem has ticked "Filter audio " in import preferences? That is supposed to get rid of audio clicks on import. well it did for me.

I'm guessing here so I could be way off.

Were the problem clips originally recorded to camera at very high volume? Then it could be digital clipping.
So actually the click is there already & imovie is REVEALING the problem rather than causing it.
I say this because from an audio point of view eveything these days is recorded to be in your face , no matter what the "volume" Example TV commecials always appear louder. So digital clipping is pure clicking noise compared to analogue noise which can go into the "red" befoe distortion becomes evident. I don't know now, but it used to be quite common for CD,s -when tested by the right equipment- were often found to be recorded too high. Sorry for the long winded stuff -all you wanted to do, like me , was to do some painless editing.

Is the click present on quiet clips?

The algorythym used by Quicktime in imovie is barely adequate if not downright crummy. Instead of "smoothing" off the audio at the edges it is jagged . Needs alot of work to bring upto standard But then I suppose that impinges on Final Cut. Right?
In my opnion, all the flexible stuff with timelines & audio levels is too much strain. The constant rebuilding in the background is dragging -especilly the audio.
Before y'all tell me I'm crazy & some of you NEVER have a problem - Remember, it's just my impressions & my opinion.

Maybe loose audio. The sound is not locked to the video in DV. If any of you having this problem have a DVCAM deck it would be interesting to see if the same problem happens. Audio is locked in to video in DVCAM. You have the option to lock audio when exporting to Quicktime BUT not on import in imovie- Badly needed, Apple!
I have a DVCAM deck but no DVCAM footage . I'll try to get some tomorrow & experiment.
Get another camera & import the same clips again to see if it's the camera that's causing it.
I think there is some setting where you can force more processor power to whatever.. so have a look for that.
Always tick "create new clip at scene break" Smaller clips may ease the problem.
OK, so what do you think about it?
Mark