Audio distorted in export

The audio of my exported medai is very distorted. Original audio is from iTunes AAC 256 bits. I'm exporting an lower bits and still distorted. What to do?

Hi Al,
Here are the steps I use to export:
From the File menu, I select 'Share' and select 'Master File'
In the pop-up dialog box I click on 'Settings' and select 'H264' as the CODEC
I open the rendered file with QuickTime Player and the audio is distorted.
I open the rendered file with QuickTime Player 7 and the audio is fine
I convert the exported file to a WMV file using Pro version of Flip Player. The audio in the resulting file is fine.
I'm no expert but this would on the outset appear to be a problem with QuickTime v10.4. I can't seem to find a way to resolve this. Thank you for your assistance.
FYI - the audio file for the project is pulled in to FCPX as an mp3 directly from the iTunes library via the 'Music and Sound' browser.

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IMovie Audio Distortion (When Exported)

I recently made a video in IMovie, and I am running into some troubles with the audio when i export the video to a quicktime format or when I burn it onto a CD. I preferred using IMovie HD to the version I had upgraded to with iLife '08 so I re-installed IMovie HD - version 6.0.3. The video is about 40 minutes long and includes both video's from a handheld camera (with sound), still pictures, and music from my iTunes. The video runs great on iMovie, but when I burnt it to a DVD or when I export it to quicktime, it is distorting about 3 minutes of audio at the beginning of the video. It sounds like someone sped up the voices, put a mic in a wind tunnel, and made some weird sound effects over the top of the video. The original audio is still recognizable, but it is greatly masked by this distortion.
The other issue is that when I try to open the .mp4 file created from the "share" function of i-movie, it is giving me an error message that says "An invalid sample description was found in the movie". I have tried changing the extension to a (.m4v) but had no luck. When using VLC's video player to open the file however, it worked like a charm and the video displayed just fine (except for the audio distortion as mentioned above). Has anyone else run into this issue, and if so, do you have any possible solutions? I read somewhere online about separating an ac3 file (I have no idea what that is or how to do it), but I can not find the article again. Thanks in advance!

Hi Bob,
Welcome to iDVD Discussions.
Did you import 16-bit audio from your camcorder?
http://docs.info.apple.com/article.html?artnum=165285

IMovie 10.0.1 audio distorted when exporting

Hello,
I made a movie in the new imovie. When I exported the video to youtube, the audio sounded all weird in youtube, so I deleted it.
I tried exporting the video as a file to quicktime, same problem, audio was distorted. I read online that in iMovie 11, you had to edit the sound of the video in the advanced settings, such as converting the audio to ACC.
I see NO such advanced setting tab or possible way to convert the audio in the new iMovie. How do I fix this? The video sounds completely fine in iMove10 when I play it, but terrible on youtube and in quicktime.
Thanks
PS: How do I normalize the audio as well? Again, no option anymore.

Hey did you ever figure this out? This forum describes how to export the movie to quicktime with special settings and claims that it resolves the issue but my Imovie ('11, version 9.0.9) won't go through the export...I've tried at least 5 times...it starts and says it's going to take about 30 minutes and works for about 10, often as the clock goes up instead of counting down and then the window disappears and nothing has been exported.... I'd love to resolve this issue...it has only been happening to me since I figured out how to ask the audio to duck other tracks and tweak equalizer settings so it's gotta be something to do with the fact that either the equalizer settings confuse youtube it the .mov format it exports in on default settings (without the ACC tweak which I haven't found a way to do yet)...any new guidance? Trying to get this done yesterday!!
http://productforums.google.com/forum/#!topic/youtube/bs8mgyVMSEU

Audio Distortion when Exporting to DV-Cam

I'm having a strange problem on my G5 Dual 2.0 PowerMac.
I am trying to export a video from the timeline to my DSR-20 DV-Cam deck using Firewire.
I can capture from the deck no problem. But when I try to go from the computer to the deck, it gives a loud distorted noise on the deck and the audio levels on the DSR are solid-maxed.
What can be causing this ? Seems odd that it works fine from the deck to the computer....but not the other way around.
Solution ???

How does it sound when you just playback the Timeline? If that works OK, have you tried recording on the DSR-20 during Timeline playback? Or are you only using the Print to Video command?
If Timeline playback also has the problem, try exporting a self-contained movie from FCP, then import that file into a new project - then try recording on the DSR-20 again.
-DH

I am getting inconsistent audio distortion after export, please help.

When I export with the following settings I am experiencing a lot of distortion on my 2nd audio clip which is 48000hz - 16bit - Stereo.
This happened when I changed my sequence settings from 23.976 to 24fps.
Any thoughts? This was filmed on a gh4, using a sennheisser wireless g3 and the on board audio recording. Never had this issue before. Whats strange is that the distortion only occurs during the second clip... I can embed the video that helps.

I seem to remember having audio issues at transition points way back with PPro 1.5 and the fix was to export/render just the audio to an uncompressed wav, place that wav on it's own track and mute the others before rendering the project out. That eventually put me into the habit of doing roundhouse sessions of the audio into Audition for tweaks, noise, normalize, etc. and mixing down back to PPro. The only audio effects I use in PPro anymore are track gains to meet specs in the loudness radar at final export.
I'm really digging how tight the entire suite is, and I could go on how well it's working, but that would raise trouble with some so I'll stop here.

Perfect audio in FCPX timeline, distorted after export to QuickTime mov

Anyone experiencing distorted audio with a QuickTime movie file exported from Final Cut Pro X? The audio sounds great in the timeline, but muffled and distorted after exporting it. Here's the kicker, I took that same file and opened it using QuickTime 7 and the audio is fine. I took that same file and converted it to a WMV file using Flip Player, and the audio is fine. So it would seem that the problem is the newest version of QuickTime (v10.4). If any of you have come to a similar conclusion, is there a way to remedy this? It's problematic because when I upload the file to YouTube, the distortion is present. Thanks in advance to everyone who can assist with this.
MY SYSTEM:
MacBook Pro (Retina, 13-inch, Late 2013), 2.8GHz Intel Core i7, 16GB RAM
OSX Yosemite 10.10.2
FCPX v10.1.4
QuickTime v10.4

Hi Al,
Here are the steps I use to export:
From the File menu, I select 'Share' and select 'Master File'
In the pop-up dialog box I click on 'Settings' and select 'H264' as the CODEC
I open the rendered file with QuickTime Player and the audio is distorted.
I open the rendered file with QuickTime Player 7 and the audio is fine
I convert the exported file to a WMV file using Pro version of Flip Player. The audio in the resulting file is fine.
I'm no expert but this would on the outset appear to be a problem with QuickTime v10.4. I can't seem to find a way to resolve this. Thank you for your assistance.
FYI - the audio file for the project is pulled in to FCPX as an mp3 directly from the iTunes library via the 'Music and Sound' browser.

Audio distortion in Burned DVD's

I posted this in iDVD, but think it may be an iMovie issue since I didn't have the problem using the iLife 6 apps.
Anyway, just looking for some answers/thoughts.
So I get some distortion, what sounds like maxed volume through crappy speakers when I now that I use iMovie 08, iDVD 08 and Garageband (forced to use because I want custom chapter markers) & I have had the same audio distortion with several projects using various downloaded (amazon) mp3's or LAME rips 224 kbps or higher. I checked the dvd on my PS3 to Pioneer plasma...sounds distorted. Other computers and "simple DVD" players the song is high but can't tell the distortion.
So here's what I'm trying to answer
Is it my PS3-Pioneer TV?
How does the normalization in iMovie work? Does garageband undo it?
Here's why I ask...I set the volume levels for 75% on all music tracks then normalized and exported, loaded in Gband, added chapters and re-exported using share to disk. I saw something speed by that looked liked it said normalizing, and was wondering what that does to the track that is supposedly already normalized.
I plan on running a few tests so that I don't have deal with this again.
I have re-done the audio without normalization, but volume at 75%. I'll import this direct to idvd...test
same thing only run through gband then idvd..test
Any help/info is appreciated...
PS..I usually burn on TDK DVD-R's
shaun

Volume will control the sound from the main Video track. I usually set it at either 100% or 0%, but no reason you cant use other settings.
The Ducking feature controls the volume of the music tracks, extracted tracks, and voiceovers as a percentage of the volume of the main track.
So 100% in Ducking means main track and music track have same volume.
15% ducking means music track is 15% of volume of main track. 0% ducking means that music track is silent.

Why do I have this voice distortion on export

Hello to akk, I am facing this problem while editing and exporting my current project: voice distortion. FYI, the present project has stretches of voiceovers interspersed with audio recorded by my Sony handycam. Even while editing the project on the timeline, I experienced, while adding effects to the audio, a voice distortion coming on and off. This voice distortion I experienced in both the voiceover and also the 'handycam-recorded' audio sections. I guess that while editing, I resorted to this method of getting rid of this distortion, stopping the play and starting again from a previous part of the project. This used to get rid of the distortion. While reviewing the project many times before export, the audio seemed to be fine. But after exporting [H 264 720p, 5 mbps, single pass], I have found this problem: the voiceover stretch is distorted whereas the 'handycam-recorded' audio is fine.
Is this distortion of the voice due to the effects I have added? The audio effect which I suspect to have caused this distortion [upon export] couls be 'STEREO SPREAD'. The other effect I have aded to the voiceover audio clips is: Voice Over Enhancement.
I shall move on and try to export after removing the 'stereo spread' effect and see what would happen. But untilsuch I time I would love to know from peers as to what has caused this problem. FYI, I have very little knowledge of the requirements of editing audio and I can say I am 'dabbling' with this matter. I have not had any distortion related audio problems when I was using the 8th version of FCPX.

Hello Russ and Peter,
Thanks for being helpful. I trust the following screenshots will help you to understand the matter:
FYI, this screenshot shows the position of the project after I have done the unchecking of the stereo spread effect for all the 3 [compound] audio clips immediately beneath the primary storyline. When I had made the first export, the stereo spread effect was checked in all the three clips.
The first clip which has been selected and whose information is presented in the inspector window is the 'introductory' voice over which is a compound clip of several voice overs done for that section. It is this compound clip having the voice overs that is having a voice distortion. Pertinently, there is no voice distortion when the clip is played on the timeline having both the 'voice over enhancement' and the 'stereo spread' effects checked. It is only in the exported movie that I get the distortion. You may hear this distortion by viewing the video which I have posted on You Tube. The link to this video is given at the end of this post.
The above screenshot shows the second compound clip being selected. This clip contains the audio fro my Sony Handycam. The effects which have been added to this clip can be seen in the inspector window. You can see that the stereo spread is unchecked, but, it was checked when I had made the first export. There is no voice distortion in this compound clip either on the timeline or in the exported movie.
The above screenshot shows the third compound clip selected. This clip has all the voiceovers of the ending message of this project. There is no voice distortion with this clip either on the time line or after export with the two effects checked.
The link to the video is :
http://youtu.be/rfigSWfzPZw
Thanks in advance. Regards and take care!

Sporadic audio distortion on 24"iMac

Hi all,
Since buying my 24" iMac, I've had a problem while watching (for example) YouTube videos, whereby audio is fine through the internal speakers, but for about 1 second in every 30 the audio distorts and gets slightly louder, then it goes back to normal. I assumed it was maybe a browser (Safari4) or plug-in issue and could live with it.
Since upgrading to 10.6.2 yesterday morning, the exact same problem is affecting my iTunes playback, which is of course more of a problem!
Can anyone shed any light on this? The machine was a refurb, and it's still under warranty.

HI and Welcome to Apple Discussions...
Try the 10.6.2 combo update available here.
http://support.apple.com/kb/DL959
Then repair disk permissions.
Quit any open applications/programs. Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it's finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of "messages" in the permissions window, it's ok. That can be ignored. As long as you see, "Permissions Repair Complete" when it's finished... you're done. Quit Disk Utility and restart your Mac.
You could also try uninstalling and reinstalling the Flash player plugin.
Uninstall Flash
Reinstall Flash
Restart your Mac.
Carolyn

RE: Macbook Stuttering, Audio Distortion

FYI
As discussed in Macbook Stuttering, Audio Distortion,
The solution to this problem is as follows:
The fix is to blow out nearly four years of dust (in my case), using the instructions given here (for replacing a fan...)
http://www.ifixit.com/Guide/Repair/Installing-MacBook-Core-2-Duo-Fan/522/1
You don't need to remove the fan, but go as far as removing the keyboard, and then you can simply use an air-duster to remove every bit of dust you can find.
If your macbook's heatsink (as in my case) was cleaned by a professional in Apple Store, and you still keep having problems with youtube, ichat, skype and have stuttering, audio and video distortion and your 2+ghz intel macbook behaves as if it's an early iMac G3 - you have to do all steps described at ifixit.com.
When I have taken out my macbook's fan (the heatsink was perfectly sterile) I have found a 5mm thick layer of compressed dust blocking 97% of the air exit.
Removing the blockage has helped and my macbook is operating like it's new.
PS: It's sad that people at Apple Store do not do their job properly.

Your processor is momentarily saturated. It's not really a 'defect' that is covered under warranty.
Flash is a widely-known resource hog. It's one of the reasons that Steve Jobs has 'banished' Flash from iPhones and the new iPad, and uses H.264 format video.
Have you also noticed that the fan becomes loud when this is happening? Almost any time the fan starts running at high speed, it's because your processor is working hard and needs additional cooling.
If you look at Activity Monitor when the stuttering occurs, you probably have a combined CPU utilization of the top two or three processes running of more than 100%.
It's also quite possible that the Free memory 'green slice' of the of the System Memory pie chart is quite tiny.
Work-Arounds
1. Run fewer processes/programs. Close and Quit every application that doesn't need to be running while you're watching Flash.
2. Try another browser. Some are better than others at running Flash. I use Safari primarily, but Firefox, Google Chrome, and Opera are also available.
3. Add RAM memory, especially if you still have just 1Gb RAM memory installed. Upgrading to 2Gb or 4Gb (MacBook 2,1 actually only recognizes and utilizes up to 3Gb) will help somewhat. It doesn't cure the processor saturation, but it does give the programs running more 'breathing room' until it reaches the saturation point.
4. ClickToFlash gives you options for how Flash is handled. Free download here --> http://rentzsch.github.com/clicktoflash/
5. H.264 format videos may be less processor intensive.
6. Buy a new Mac with a faster processor and more RAM. Even a 2.26Ghz MacBook Pro does much better than the 2007 2.16, because it uses a low power microprocessor, has 2Gb RAM standard, has a more advanced video chipset, and an unibody aluminum case to help dissipate heat.

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Does anyone have any idea why the DVD I burn using DVD Studio Pro (from a 90-min FCP QT movie) - whether it’s compressed by DVD Studio Pro, or through Compressor (with bit-rates of 4 for avg., and 7.2 for maximum) - plays with some serious simultaneous video and audio distortions on my brand new DVD player – that don’t show up at all when played on a friend's DVD player.
As a test, I burned a DVD with just the video, and it does NOT play the same distortions on my DVD player. This obviously means the video distortion is related to the audio being there, but, I don’t know why, or how to begin fixing the problem.
Any help would be tremendously appreciated!

Oh yes, indeedy!
Go into the AC3 encode tabs and have a look around. If you never used A.Pack with older versions of DVDSP then none of this will look familiar, but essentially the tabs are exactly the same as the old A.Pack application.
You can set the desired bitrate - for stereo you don't need more than 192Kbps. You can set the dialog normailsation value (for now, type in -31 and press return) and you can set the compression type - just use 'none'.
This should get you a reasonably useable AC3 file for your project, but as you might guess, there is a lot more to it than that! Head over to http:..www,macprovideo.com and see if you can get hold of the tutorials for A.Pack, or find a copy of Martin Sitter's book for DVD Studio Pro (any version). The chapter on A.Pack is well worth reading and possibly justifies the price of the book on its own.
Once you have got the audio encoding sorted out and are using it on a disc, see if the distortion still happens.
Also, can you describe the distortion that you are seeing?

NO AUDIO ON BATCH EXPORT. First 2 times i posted this it never showed up....

Why do I randomly get audio from batch export using AME. Usually it doesn't work at all as in NO audio but other times several of the files in a batch will have audio. And other times none.
What gives?
running Mavericks on G5 with 12GB of RAM and Quadro FX4800 video card.
Rob

First of all, could you tell me what version of AME you are using?
Did you import files directly into AME or queue jobs from Premiere Pro or other Adobe apps?
Could you clear the following cache folders while no Adobe app is running and try again?
/Users/<user name>/Library/Application Support/Adobe/Common/Media Cache
/Users/<user name>/Library/Application Support/Adobe/Common/Media Cache Files
How many files did you encode at one time? If you encode one at a time, does it encode fine?

Audio fails in Export to QT

Hi,
I have made two presentations in Keynote and need to export to QT Full Quality, manual advance, to include on DVD's
Both presentations are the same except for the language.
The English version lets me export no problem. However the Korean version has no audio in the export. It does make two files one movie and the other audio but so does the English version. I have checked everything, both files are identical. Both mov. files are 16.4 MB in size. The exported English mov.file has 51.5 MB and the Korean mov.file has 61.2 MB. Does anyone know what happened to the audio or why it won't play?

Hi
Me just thinking.
Do You use - external hard disks ? If so
• Connected via FW or USB/USB2
• Free space on them
• formatted as ?
BTW - Did You Mix Down Audio - before Export - I do !
Yours Bengt W

Adobe Premiere Pro audio distortion

Hi,
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stringZ

Just looking at the waveform confirmed my initial reaction: Way, way
oversteered. Everything is clipped and your best approach is to
reshoot. That some players can handle this seriously mistreated audio
may be caused by audio limiters. They should, otherwise you would blow
up your speakers.
Well, you can say that and if this sample was a music maximized with compressors, it would distort too. Sony Digital-8 camcorder has an internal limiter, so only soft-peaking can occur, but no serious distortion. Media Players (eg. mplayer) don't have limiters unless you specify an external limiter filter. I've already told this isn't the clip you want me to re-shoot. This is a sample I created to show you the problem. I sent this to one of my friends who has Ulead MediaStudio Pro 7.0. It doesn't distort there either. Have you tried loading it to an audio editor like Audacity or Adobe Audition? You can see no hard-peaking or distortion if you zoom in the waveform.
Waveform at 00:00:00:21. No distortion, only high levels can be seen on this waveform.
Waveform after 00:00:00:21. Soft peaking in right (bottom) channel.
I'd appreciate if someone took this seriously instead of repeating "reshoot it" and "high levels".

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Audio distorted in export

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