Fixing distortion - recording volume was too loud

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tomtailford
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Joined: Oct 17 2007

I've done a video with commentary and the recording volume was way too loud.

It now seems maxed out so to speak, is there a way i can fix the distortion??

Thanks,

Tom

mooblie
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Joined: Apr 27 2001

Is it actually clipping (digitally)? In which case, you're ****ed. Sorry. Needs to be re-recorded.

Martin - DVdoctor in moderation. Everyone is entitled to my opinion.

Rob James
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Joined: Jun 26 2001

It depends on the severity of the clipping. There are effective de-clipping algorithms out there.

Rob The picture is only there to keep the sound in sync

Alan Roberts
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Agree with Martin, if you've recorded clipped audio, start again.

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Rob James
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But if re-recording is not an option...

Rob The picture is only there to keep the sound in sync

mooblie
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Tom - you said it was a "commentary" - you need to tell us if re-recording is an option...

Martin - DVdoctor in moderation. Everyone is entitled to my opinion.

Chrome
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Joined: May 26 1999

Let's hope it wasn't a 'critical' and 'irreplaceable' recording. :(

Was the 'commentary' done at the same time as an event? If it is simply someone speaking over the video, would it not be possible to re-record the commentary? Even if it's 'live' and 'over' an event it may be possible to mix foley sound (ie: crowds/cheering/music etc.) in with a newly recorded commentary.

Tom, you also don't say whether it was for fun, charity or even a paying job... that would make a difference. If it WAS a paying job then it would have been prudent to hire a sound recordist who knows what they're doing, then you simply wouldn't be in this situation.

DAVE M
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Joined: May 17 1999

funnily enough -

I've just been asked the same thing. A lecture that was recorded and the audio clipped.

Don't suppose anybody knows of anything free out there? I've pretty much told the guy (who isn't too worried about the loss) that there's nothing I have

foxvideo
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Joined: Sep 9 1999

Audacity - Free for both Mac and PC can sometimes fix clipped audio - there are several ways that have have been mentioned in various forums - google "fix clipped audio+audacity"

Be aware it's not a quick fix - can take hours of work with keyframes at a zoom level of 1/1000th just to fix a few seconds of audio!

Dave Farrants Fox Video Editing

Chrome
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foxvideo wrote:
Be aware it's not a quick fix - can take hours of work...

Been there recently Dave... Even with a pro-recordist you can't allow for every eventuality. For example, we had a drop out during an interview on the recorded audio track (a glitch of some sort - loose cable?). I particularly wanted to use that take; the interviewee simply did not say the relevant things as well again (or in fact repeat the same words!).

So I had to rebuild a couple of important words using individual phonyms clipped from elsewhere in the guys dialogue; like I said he simply didn't repeat those words anywhere. It took me at least four hours in Soundtrack Pro to completely replace less than 2.5 seconds of speech. Pretty pleased with the results though, I would defy anyone who heard it to tell me where in the soundtrack it occurred. :)

foxvideo
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;) Did the same a few years back - had to change the word diaper for nappy (don't ask!).

Dave Farrants Fox Video Editing

Peter Groom
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Joined: Apr 2 2008

Surely this distortion is limited to only a few moments in time. Thats how long it takes even the slowest operator to respond to over modded level (presuming that they are adhering the day 1 lesson 1 rule of recording ......Always monitor end of chain.

Peter

As far as fixing is concerned the results are at best limited. If you drop a ming vase down the stairs, no amount of super glue gets it back to its formar value. Sorry

Dubbing Mixer 23 years broadcast TV

Chrome
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Peter I think from the look of it Tom was not using a sound recordist but taking a more DIY approach...

foxvideo
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...and without cans ;)

Dave Farrants Fox Video Editing

RayL
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Joined: Mar 31 1999

At a music convention that I recorded, a band from Sweden were using amplifiers supplied by one of the UK bands that were also on the bill. The lead guitarist's borrowed (valve) amplifier started playing up early in the set and by the end was very, very distorted. The guy (a real pro) soldiered on, completed the set, and even played all the notes as if there was no amp problem at all. This is what saved his set as far as the DVD was concerned.

Fortunately, I was recording the music convention on a 24-track. I mixed down the other instruments to a mono backing track, then sent the guy a CD of the 50-minute set with the backing on the left and the distorted guitar as a guide on the right. Over in Sweden, he recorded the entire 50-minute set on to a separate CD (in one take - I told you this guy was a pro) and sent me the CD. I was then able to drop the new lead guitar track on to the Premiere timeline along with a stereo mix of the other instruments.

To this day, no-one (even people who were present at the convention) has ever commented on (or even noticed) this 'clean-up' job.

Ray L

Z Cheema
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Joined: Nov 17 2003

Have a look at this software have heard good reviews

http://www.izotope.com/products/audio/rx/

Rob James
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Joined: Jun 26 2001

I second that, well worth checking out. I've auditioned some of their plug-ins and found them good, but it isn't cheap, bearing in mind the exchange rate.

Rob The picture is only there to keep the sound in sync

tomtailford
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Joined: Oct 17 2007

update: i'm officially an idiot.

turns out it was the device playing the audio had it's volume turned right up... causing distortion.

recording wasnt so bad after all.... im stupid!

Pete Allen
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Joined: Oct 25 2006
Quote:
recording wasnt so bad after all.... im stupid!

Very honest of you to come clean, sometimes we all take it that the worst has happened.

I drink to steady my nerves. Last night I got so steady I couldn't move. Wedding video essex