IDVD is converting my stereo audio to mono

The exported files are in stereo, yet when I burn it, they're in mono. What's going on?

Hi
*Not knowing the origin to Your problem - General approach when in trouble is as follows.*
• Delete iDVD pref file - *or rather start a new user/account* - log into this and re-try
iDVD pref file resides.
Mac Hard Disk (start-up HD)/Users/"Your account"/Library/Preferences
and is named. com.apple.iDVD.plist
While iDVD is NOT RUNNING - move this file out to desk-top.
Now restart iDVD.
• Free space on internal (start-up) hard disk if it is less than 10Gb should rather have 25Gb
• Hard disk is untidy. Repair Permissions, Repair Hard disk (Apple Disc Util tool)
• Program miss-match. iDVD 5.0.2, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK - DON’T work under Leopard
• Program miss-match. iDVD 6.0.4, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK (might work under Leopard)
• Program miss-match. iDVD’08 v. 7.0.1, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK (might work under Leopard)
• iDVD (08) v7 Locate theme folder. Move out iDVD1, iDVD 2 and eventually iDVD4 folders to desktop - re-try
Macintosh HD/Library/Application Support/iDVD/Themes/ zzzzzzzzzz
or
Macintosh HD/Users/Your log-in//Library/Application Support/iDVD/Installed Themes/ zzzzzzzzzz
• Try a Cleaning CD/DVD that cleans the laser lens on the DVD burner/player
iDVD 6.0.4 and iDVD 7.0.1 are compatible with Mac OS X 10.5 Leopard
Last resort. from Craig. Solved the problem!! Finally!!
I deleted every iDVD application and folder from my boot drive,
emptied the trash and then installed iDVD 08 using the customize option
and I am up and running.
If You do a re-install be sure to get rid of all iDVD old parts AND then EMPTY the Trash-basket !
iDVD updated ?
Apple Codec updated ?
Start a New Clean project - or delete project assets
No of Colors - must be set to millions
EdinSF writes that, The 10.6.3 update with an Open GL fix seems to have taken care of the problem.
Yours Bengt W

Similar Messages

"Play stereo Audio as Mono"

I recently was tearing out my hair because I had mono checked (somehow). It was playing Mono through my Apogee Duet Audio interface, but playing stereo through my headphones jack on the core audio. I remembered it always worked fine in Snow Leopard, so I installed SL on a partition for testing purposes and sure enough the Duet played in stereo. So naturally I thought there was a problem with the drivers between Lion and the Duet. After much discussion with Apogee, frustration and online searching I found out about this "Play stereo Audio as Mono" business.
In your next update or release, please link "Play stereo Audio as Mono" in the Sound preferences pane as well. It is a major problem when your audio is playing in mono and you cannot figure out why because the option is hidden away in "Universal Access". As a non-impared user of OSX I have no need to go into "Universal Access".
Thank you.

Philmac88 wrote:
the setting still resets itself after restarting.
Then I'm stumped. I don't know why or what to do.
You could go around the issue by running a script at login to set this option. Here's a script I found on the net:
--script begins
on run
          tell application "System Preferences"
activate
                    reveal anchor "Hearing" of pane id "com.apple.preference.universalaccess"
          end tell
          tell application "System Events" to tell process "System Preferences"
click checkbox 2 of tab group 1 of window 1
          end tell
          quit application "System Preferences"
end run
--script ends
(It requires the "Enable access for assistive devices" pref to be enabled.)
Save it as an app in a convenient location (eg, <~/Library/Scripts>), and add it to your Login Items. It will run every time you log back in. Note that this is a toggle—if the preference is on, it will turn it off.

Design flaw in 'Play stereo audio as mono' of Universal Access Hearing-tab

The option to 'play stereo audio as mono' that comes with OSX 10.6 does not work as I expected.
When I enable this option it sounds like only one of the two channels becomes mono, while the other one does not sound mono to me.
It's hard to notice this, because the total sound does change to 'less' stereo.
I've done some testing with different soundcards and testing signals, and found out that when the option is enabled, the mono signals are routed incorrect.
While the right channel becomes mono, the left channel seems to be something else; I'm not sure if it's the original left channel of the stereo signal, though.
I have reason to believe that the resulting mono sound on the right channel correctly is the 'monofied original sound', but that from the left channel.
The resulting mono sound on the left channel sounds like the original left channel of the stereo sound, maybe added with the mono sound of the right channel.
Why do I think so? When using a sound card with more than two outputs, I can clearly see that sound is being sent to the second and the THIRD output, instead of the first and the second output, immediately after I enable mono. Resulting in output on THREE channels:
original left
monofied (left)
monofied (right)
On my soundcard I can disable the extra outputs, and than I hear:
original left + maybe monofied right
monofied (left)
I think the programmer of this great feature made an 'off-by-one error', consequently sending the monified output to the wrong channels;
to channel[1] + channel[2] instead of channel[0] + channel[1]
I don't know what happens to sound that is sent to channel[2] (the third channel) on a two channel soundcard.
It could be mapped to the the first channel, but that of course is speculation. Could be tested though, with the right audio signal.
I hope someone can confirm this. If more people experience this problem, maybe Apple can fix this so I can enjoy listening in mono.
I have tested this on the internal soundcard and three external firewire audio interfaces, of which 2 have 8+ output channels.
Thanks!

Thanks for the quick-and-dirty test.
Your findings are not a surprise to me.
It would be more interesting though to not use one's ears for proof.
Also, I have reason to believe that this result is valid for any two channel audio interface.
With the test below I can proof that audio is sent to three channels instead of just two, when enabling "Play stereo audio as mono" on an(y) audio interface with more than two outputs (enabled).
The test takes a little longer than the quick-and-dirty test.
If you don't have an audio interface with more than two channels of output, you can still perform the test by installing Soundflower first.
Soundflower is a virtual audio interface with multiple inputs and outputs, and can be used as an audio router or audio patchbay.
Get Soundflower from http://code.google.com/p/soundflower/ - it's free.
Here's the test …
Open System Preferences, choose the Sound prefpane and select the Output-tab
Select any audio interface with more than two channels of audio outputs as your sound output device ( Or use "Soundflower (16ch)" )
Keep the System Preferences open
Start Garageband
Create a new project
From Preferences select for Audio Input your interface-with-more-than-two-channels-of-audio ( Or use "Soundflower (16ch)" )
( selecting an Audio Output is not necessary, because we're not actually going to use our ears for proof )
Enable multitrack recording from the menu (Track / Enable multitrack recording )
Create four tracks as "Real instrument"; each one with an increasing Input Source: Mono 1, Mono 2, Mono 3, Mono 4
( the last one is just for verification )
Enable recording on these four tracks (if you can't select more than one, try enabling multitrack recording)
Open System Preferences, choose Universal Access (probably click 'Show All' first) and select the Hearing-tab
Make sure audio is played in stereo (unchecking the checkbox)
Keep the System Preferences open
Switch to the Finder or iTunes
Playback any song
Switch back to Garageband and check the meters on the individual tracks
( remember this is stereo, notice the number of channels with signal )
Switch back to System Preferences to enable mono (on the Universal Access prefpane)
Switch back to Garageband and check the meters on the individual tracks ( this is mono ! )
End of test ...
You will see that in mono a third audio channel is addressed, while there should have been only two in both mono and stereo.
The signal strength of channels 2 + 3 seem equal, and channel 1 looks much louder.
This difference in signal strength is very noticable when listening to channels 1 and 2 on separate speakers or headphone.
What is that playing on channel 3?
I must admit (against my original post) that this test does not proof that the signal on channel 1 is or is not mono or anything else; that requires another test.
One can of course record these channels and do some comparisons and subtractions or some other clever tricks.
Hope anyone can second this, preferably with an actual audio interface like Apogee Ensemble, Motu, RME, Presonus, Focusrite, etc.

Merging clips turns stereo audio to mono

I've got a stereo audio file I'm merging with a RED Epic clip (with replace AV clip audio). Whether I merged by audio waveform or in point, the result is always a merged clip that has two channels, but is no longer stereo. It's like it has taken only the left channel and doubled it. Thoughts?

It's not a dual panned center mono file, there's something wrong with the way it sounds when left is panned hard left and right panned hard right. I've tried panning each channel hard the other way and it still doesn't sound like the original stereo file I've merged it with. Am I doing something wrong? Why wouldn't premiere just replace the AV clip audio with the singe track stereo clip? Why the need to break it out into dual mono? Is there a preference I'm missing or something? This seems unintuitive.

Turning Stereo audio to mono

I have the Sony PMW-EXR1. The camera has 2 XLR audio inputs. I took some video using 2 lapel mics plugged into each of the inputs. Input 1 recorded to the left side and input 2 recorded to the right side. I want all audio to be turned into mono. I can't figure out how to do this...ideas?
Thanks,
Dean

Also, audio that imports into Pr as stereo can be tagged as dual-mono by selecting the clips in the Project tab, and choosing Clip>Modify>Audio Channels>Mono button.
You can only do this before you edit any clips into a Timeline. Once your clip is in a timeline, this option isn't available. But, after you do this, and you drag a clip to a timeline, the audio will map to two mono tracks, instead of a single stereo track.

"Play stereo audio as mono" disabled after restart

I've been using the "Play stero audio as mono" option in Universal Access, but ever time I restart, the setting is disabled. As far as I know, this is the only setting that does this. I also have the "Balance" slider bar all the way to the left in the Sound control panel; this persists through restarts. What can I do to fix this?

Philmac88 wrote:
the setting still resets itself after restarting.
Then I'm stumped. I don't know why or what to do.
You could go around the issue by running a script at login to set this option. Here's a script I found on the net:
--script begins
on run
          tell application "System Preferences"
activate
                    reveal anchor "Hearing" of pane id "com.apple.preference.universalaccess"
          end tell
          tell application "System Events" to tell process "System Preferences"
click checkbox 2 of tab group 1 of window 1
          end tell
          quit application "System Preferences"
end run
--script ends
(It requires the "Enable access for assistive devices" pref to be enabled.)
Save it as an app in a convenient location (eg, <~/Library/Scripts>), and add it to your Login Items. It will run every time you log back in. Note that this is a toggle—if the preference is on, it will turn it off.

FCP is turning my stereo audio into mono... bleeding?

Final Cut Pro is somehow turning my audio, which is in stereo into mono. Meaning that on each channel, there is some bleeding going on from the other channel. What gives? This is not the case when I initially drag the file into the timeline, but does happen over the course of time or at some unknown point. Does anyone know why this is? Can I change this so that it goes back to how it's suppose to be???

Hi
*Not knowing the origin to Your problem - General approach when in trouble is as follows.*
• Delete iDVD pref file - *or rather start a new user/account* - log into this and re-try
iDVD pref file resides.
Mac Hard Disk (start-up HD)/Users/"Your account"/Library/Preferences
and is named. com.apple.iDVD.plist
While iDVD is NOT RUNNING - move this file out to desk-top.
Now restart iDVD.
• Free space on internal (start-up) hard disk if it is less than 10Gb should rather have 25Gb
• Hard disk is untidy. Repair Permissions, Repair Hard disk (Apple Disc Util tool)
• Program miss-match. iDVD 5.0.2, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK - DON’T work under Leopard
• Program miss-match. iDVD 6.0.4, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK (might work under Leopard)
• Program miss-match. iDVD’08 v. 7.0.1, Mac OS X.4.11 AND QuickTime 7.5.5 - is OK (might work under Leopard)
• iDVD (08) v7 Locate theme folder. Move out iDVD1, iDVD 2 and eventually iDVD4 folders to desktop - re-try
Macintosh HD/Library/Application Support/iDVD/Themes/ zzzzzzzzzz
or
Macintosh HD/Users/Your log-in//Library/Application Support/iDVD/Installed Themes/ zzzzzzzzzz
• Try a Cleaning CD/DVD that cleans the laser lens on the DVD burner/player
iDVD 6.0.4 and iDVD 7.0.1 are compatible with Mac OS X 10.5 Leopard
Last resort. from Craig. Solved the problem!! Finally!!
I deleted every iDVD application and folder from my boot drive,
emptied the trash and then installed iDVD 08 using the customize option
and I am up and running.
If You do a re-install be sure to get rid of all iDVD old parts AND then EMPTY the Trash-basket !
iDVD updated ?
Apple Codec updated ?
Start a New Clean project - or delete project assets
No of Colors - must be set to millions
EdinSF writes that, The 10.6.3 update with an Open GL fix seems to have taken care of the problem.
Yours Bengt W

Convert/Mixdown Stereo Wav to Mono Wav

Hello,
i have a problem with automating Quicktime via Applescript. I´ve got thousands of two channel stereo interleaved pcm coded (aif, wav) audio files that i want to convert to split stereo files, i.e. mystereo.wav --> mystereo.L.wav AND mystereo.R.wav
I found a solution to save a QT-export-settings file with Applescript following these instructions: http://lists.apple.com/archives/QuickTime-Users/2002/Nov/msg00294.html. So this is how i made the export set to MONO!
My idea was to open the stereo interleaved file, set the pan to left, export to mono, then set the pan to right and export again to mono. I automated theses actions with applescript and it seems to work. BUT ...
Unfortunately quicktime exports 2.0 stereo tracks (one channel silent, the other with programme) instead of following the export settings and merge to mono?
Am i doing something wrong?
Why behaves QT this way?
How can i force quicktime to export mono files?
Thanks in advance for your answers.
b.

Not sure about the Applescript part (I am just delving into that myself), but the method I use to output separate L and R channel mono files from a stereo interleaved in Quicktime is as follows:
1) Open the stereo file, bring up the Movie Properties window (Command-J)
2) Click the "Soundtrack" entry in the list, then click the "Audio Settings" tab
3) On the right hand side of the window is a list of Channel Assignments.
4) For your Left channel export, assign channel 1 to "Left" and channel 2 to "Unused" from the pop-up list.
5) Choose "Export" from the file menu, select "Sound to WAVE" or "Sound to AIFF"
6) Click the "Options" button, choose your setttings, and make sure that "Mono" is selected in the Channels setting.
7) Name the file "mystereo.L.wav"
Repeat steps 4-7 for the Right channel (e.g. set Channel 1 to "Unused" and Channel 2 to "Right")
Let me know if you get anywhere with the Applescript, I do this manually every week to separate L and R channels for a podcast I produce, and would love to have a more automated way to deal with it.
-K

Stereo audio rendering as mono

My husband and I recently purchased a MacBook Pro last November, recently installed Final Cut Pro 5 on it 2 months ago, and now we're experiencing audio problems we've never encountered before.
Fresh new project, new timeline, import a stereo audio file, double click and playing from the viewer it's perfectly fine, but put it on the timeline, shows up on two separate tracks and needs rendering, we render it and it turns into mono. It didn't do this before, we don't know what we changed, it used to work but now it doesn't. We must have changed something but we can't figure out what we did wrong. Even if we separate the stereo track into two mono tracks on the timeline, pan one left and the other right, it remains mono.
Please help, we're completely stumped on this one! Thanks!

The only problem with converting the audio files to 48 is that we have about 200+ audio files, living on about 17 layers, each with their own settings for speed and reverse and eq and more. Going back to reimport all that stuff would kill our deadline by about 40 hours = not possible.
But I did download that utility you suggested, it discarded our prefs, and now everything seems to be better. I'm having to "fool" FCP by placing an EQ filter set for 0 gain (i.e. no change) onto each clip, which trashes the render file, and when it rerenders it's ok, sometimes. For the ones that aren't changing out of mono I go back in and throw away that eq filter and re-render and then it's in stereo. Very strange. Also strange is that some of these animation clips now have 1 frame of black at the tail end before cutting to the next clip - very odd since the original files have NO black at all.
Something very strange happened.

ADAT stereo recorded as split mono: best way to convert to stereo?

Hello everyone,
I have session material on an ADAT that have stereo files split on two mono tracks (e.g. channels 1 & 2) and thus were recorded in logic on mono audio tracks (e.g.1 & 2). What is the next step to insure easy editing abilities?
For example, is there a “link” button similar to FCP that will allow edits to effect both tracks? If not, should bounce the two audio tracks into one stereo track? “Convert to Stereo” does not work in the audio window, as Logic does not recognize these as split stereo files. Same seems to apply for "convert regions to new audio files" in the arrange window.
Thanks in advance for your help! Sorry for the newbe question, I dont work with audio that often, especially coming from DAT.

Is it really worth it/necessary? I will in the future make sure to record them as stereo tracks. I guess experience is the best teacher

Converting left channel audio into stereo file

I'm using an edirol ua 25 which has two inputs, 1 which is a left channel and 2 a right channel. As i'm using the first input, the recorded audio pans hard left, how do I go about converting the recorded audio into a central stereo file?

Why do you want to change it to stereo? It isn't a stereo (two-channel) recording, it's a mono, single-channel recording.
Mono is not somehow "worse" than stereo, don't feel that need that everything should be recorded to two channels, it's a waste of resources.
You can pan it anywhere in the stereo field - with the pan knob central, the mono track will be centered in the stereo field. You can pan it left or right accordingly.

Stereo Audio channel turns to mono when I close and re-open the project

Hi there,
when I import a random video file with stereo audio channels and put it to the timeline (after peaking), everything works allright - the recording level window shows me the left and the right audio channel.
But when I save and close the project in order to re-open it directly, I only got a mono audio channel (left) and the stereo is away in my timeline and recording level window. The preview of the imported video ist still ok with stereo sound.
Is this a bug ? What can do? Please help me.
Thanks a lot

Are you clearing your recent history either manually or when you close Firefox?
Firefox stores App Tabs and tab group details in the same file that stores details of browsing sessions. Make sure that you have not set Firefox to delete browsing history. For details of the setting to check see https://support.mozilla.com/kb/Clear+Recent+History

Stereo audio switching to mono

I have a slightly curious problem. I have been working on a couple of projects recently where the stereo audio files (which are music) keep on switching to mono. If I reconnect the audio files, they return to stereo playback, but only for a short while. The playback always flips back into mono.
Has anyone experienced anything like this, and/or know how to fix it?
Many thanks!
Tim

Hi Andy,
I am working on a mono timeline. I've just noticed another feature of my little quirk; The stereo tracks don't necessarily comletely turn to mono. On my current timeline, I have a couple of music tracks, where a portion has turned to mono, which is marked with a blue line at the top of the audio file, and a portion which is still stereo, marked with a green line at the top of the file.
They are linked as stereo pairs, with the panning set to -1, +1
Does this make sense?

Stereo audio export showing as mono

Hi,
I've been encountering an issue with exporting stereo audio from Premiere CS6 (v. 6.0.5) and After Effects CS6 (11.0.2.11). When I export a clip with stereo audio from Premiere or After Effects (usually to ProRes or Uncompressed QuickTime), the resulting file will show as having dual-mono audio in FCP7. When I check the file in QuickTime 7, QuickTime 10, MediaInfo, Premiere, After Effects etc., the audio is tagged as stereo. But when I bring the clip into FCP7, the audio shows as two separate mono tracks.
While this isn't a problem if I stay within Premiere/After Effects, it does become an issue when I need to work with the clips in FCP7 (they have to be relinked as audio pairs in the timeline), and one of the external distributors I work with has come back saying the file we delivered did not have the audio properly linked as stereo.
Am I doing something wrong here? I don't want to have to workaround by putting everything through FCP7, as we are really trying to keep our workflow within the Adobe suite and retire FCP!

Hm, not from what I've seen. Anything that's been exported as stereo through FCP, Compressor, MPEG Streamclip, Episode etc. shows up as properly linked stereo in Final Cut.
I just ran one of my Premiere exported files through MPEG Streamclip to the same format (ProRes, uncompressed stereo audio) and it showed up as having a linked stereo pair in FCP7, while the original showed 2 mono tracks. I am definitely exporting from Premiere with the stereo option selected (and stereo source audio).

Stereo audio imported as mono

Any ideas why the stereo audio on my miniDV tapes was imported as separate mono tracks? I'm using FCE HD 3.5 -- the tape was shot on a Canon XL1 using 12bit audio (32KHz, not reset after a project using 4 audio channels).
Are there any capture settings I missed that I could use to select the audio as stereo?
Thanks,
Sam

Are you sure that your camera has actually recorded 2 channels ?
I ask that because I got that problem a year ago. When I checked my camera and the tape I discovered it was just recording 1 audio track. On capture FCE was doubling it up to 2 mono tracks. It must have been a malfunction because the camera has no way of switching to mono.
Months later, after threatening the beast with dire consequences, it started recording normal 2 track stereo.
I have never discovered the cause of the problem.

IDVD is converting my stereo audio to mono

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