Encore transcoded audio into mono instead of stereo!!

OK here is my workflow:
Shot 1080p video on Sony XDCAM PMW-EX1 with stereo audio track. Imported footage using Sony XDCAM Transfer (makes .mov files). If you open the .mov files in QT Player they show as having Track 1 - Video, Track 2 - Audio (left), Track 3 - Audio (right). I then used QT player on most of these files to set in and out points and then copy the selections, saving them into referenced movie files. (Did not do this on all of them though). In QT Player, all of these movie files play fine. Dragging the movie files into Peak 5.2 you can see they have a Track 2 and Track 3 for the audio (stereo!).
Then I dragged all my movies (referenced and non) into Adobe Encore CS4 and selected everything and transcoded it all. (I dragged it to the timeline befoer transcoding.) The timeline shows just one audio track. It's the audio track that appeared when I dragged and dropped the video from the bin into the timeline. Should I have made a second audio track before dragging and dropping?
Because when I did Build, and it made the BMDV folder, then I burned that to a BD-R, and played it, it's in mono. All the AC3 files are in mono (left channel only). Why would that happen? Shouldn't it automatically get both channels of the sound and do stereo, or warn you before burning if it's in mono?

You are correct, sir. I'm surprised the software is not intelligent enough to recognize that. It really should be drag-and-drop simple. It should at least ask the user, "do you want to discard one audio track?"
To solve this I tried the following: go into Final Cut and export the audio as stereo AIF, then drop that in. I wanted to avoid having to re-transcode all the video, but when I did this, it decided to anyway, then had an error. So I deleted the transcode folders. Then I went to transcode again and now it's saying "Error Creating Transcode Folder" or whatever. Sigh.
This program just seems too finicky and not very robust. I'm going to upgrade to Final Cut Studio 7 and just use Compressor 3.5, which finally can export a BDMV folder that I can just burn to whatever.

Similar Messages

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

Why Does FCE capture DV audio as dual mono instead of stereo?

FCE captures DV audio as dual mono audio files instead of a single stereo audio file. You can see this if you "Show Movie Properties" in Quicktime. Files I captured in Premiere 6 years ago have a single stereo file. The problem is that the new dual mono format for DV won't play on the Final Cut Pro 3.04 installed on my wife's G4 (OS 10.4.11, Quicktime 7.6.2). FCP 3.04 doesn't see any audio for these dual mono files though it will play the video. It won't even create an audio waveform. But FCP 3.04 plays the older stereo audio clips captured in Premiere just fine. And if I export the dual mono files out of QT as a stereo file, then FCP 3.04 will play them just fine.
This lack of backward compatibility is quite frustrating. I can't seem to find a setting in FCE that will capture audio as a single stereo file. Why isn't NTSC DV always stereo? I guess maybe they had to go dual mono to facilitate surround sound panning in 5:1 or something. If nobody knows how to do this in FCE, I guess I'll just capture in FCP 3.04. I spent the better part of a day figuring out this hidden little tidbit. The lesson is don't try to go back!! We must always accelerate forward into newer versions and formats.

The problem is in your wife's machine. She is using a version of the OS and QuickTime that are much too new for the version of the software she's using. She really not not be using an OS newer than 10.4.10 and QT should 7.2 or earlier.
Yes. I was beginning to suspect that this was at the root cause of my issue. Thanks for the info. Frankly, my wife needs to buy a new Intel iMac so we'll both be able to work on the video I'm dumping. I had FCP 3 lying around from years ago and it's the only thing that might have worked on her old G4 AGP, so I thought I'd give it a try.

Recording in mono instead of stereo

I am an elementary teacher creating student podcasts. We've had no problem until today.
I have 4 5th generation video ipods that we use with TuneTalk stereo to record the pieces of our podcast. Suddenly one of my ipods will only record in mono. It downloads perfectly to iTune and everything sounds fine, but when I pull it into Garageband - it sounds like the chipmunks are visiting. My 4th graders think it's great - I don't!
I redownloaded - the voice memos - made sure I had synced it to the correct computer and the problem continued. I am syncing to a MacBook running 10.4.9. I made sure my iTunes and my iPod software are up to date. I am using iTunes 7.1.1
I have recently updated Quicktime to 7.1.6 and have been having some issues with the Q with the ? for podcasts using Safari. Would that bother my voice memos???
Any suggestions??
MacBook Mac OS X (10.4.9)

What model of camcorder is your video coming from and what format and resolution is it?
If you're using video from a camcorder that shoots in 5.1 and your project is set up for stereo, you can end up with issues like this.

BH-903 turns mono instead of stereo

Hi,
I have been using Bh-903 with e71 and earlier with E61i and was very satisfied with it. However since last week it has turned mono I can only hear audio from right ear and left has gone silent.
I have tried reseting the headset but problem remains.
I have tried with different phone problem is still same.
Any help or it has just broken...
Chand

Stereo tracks should be unaltered. What have you done?
this is how you should create it...
Right-click in this area and add new audio track...
Select mono audio submix track...
A mono submix will be created in the mixer...

My audio files are mixed in STEREO but when exported they come out MONO ?

I'm working on a music video project and have been sent AIF files that are in stereo.
However, when they are imported into FCP, they seem to be coming out to mono. I don't do anyhing to the file other than import and synch up to the video.
I'm not as well versed in the audio world, am I not doing something to the file or in the import process that is making it play in mono instead of stereo?
Thanks!

it might be just your sequence settings need changing
select your sequenec and press Command-0 (zero)
then switch to the Audio Outputs tab
if the Grouping is set to Dual Mono, then you can change it to Stereo and click Ok
see if it works

Audio Imports a Single Mono Track instead of Stereo

I am transferring mini-DV footage into a project that I was previously working on with a different camera. The audio used to import in Stereo Pairs, now it is just a single Mono track.
I don't think I changed any settings. I looked in the Clip Settings on the Capture window but I don't see an audio toggle. I am using FCP 5.0.
What should I do differently when importing and how can I get the previous single Mono imports into Stereo Pairs?
Thanks,
Hagen

If you have only one single mono audio track then duplicate it (select audio track then hold down SHIFT and OPTION/ALT key simultaneously and drag the mono audio clip down to the audio track below, it will give you a duplicate) after doing that select and double click the duplicated mono track and in the viewer Pan that hard right (1). Finally select both audio tracks and hit Option+L. You now have stereo pair.

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.

Encore is transcoding audio even though it's within spec

Encore CS6
I have two separate projects, one to create a DVD and one to create a Blu-ray. Each project has 1 video as 1 chapter on the timeline. The source files were pre-encoded before being imported into encore. The file for the DVD project is MPEG-2 with AC3 audio and show's as "Don't Transcode". The file for the BD project is H.264 with AC3 audio and shows as "Don't Transcode".
When I build each project, the first thing Encore does is transcode audio. Then it uses the video as-is.
The audio track in both projects is actually identical, here it is:
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Mode extension                           : CM (complete main)
Format settings, Endianness              : Big
Duration                                 : 41mn 52s
Bit rate mode                            : Constant
Bit rate                                 : 256 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 76.7 MiB (4%)
This is a 100% within spec audio stream for DVD-Video and Blu-ray.
However, encore is transcoding to this:
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Mode extension                           : CM (complete main)
Format settings, Endianness              : Big
Duration                                 : 1h 29mn
Bit rate mode                            : Constant
Bit rate                                 : 192 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 122 MiB (100%)
The only difference is the bit rate.
Why is Encore forcing the 192 Kbps bitrate? The 256 Kbps source file bitrate is 100% within spec for DVD-Video and Blu-ray disc.
Is there a way to stop this transcoding?
Note that there is no audio in the menu structure.

Stan Jones wrote:
Putting 2 a3c's on a timeline invites problems. Export as a single audio file.
This did the trick. I deleted the two separate files, extracted the AC3 streams from the 2 source files and combined them into a single AC3 files (used eac3to for this), then added that to the project and placed on the timeline. Now it no longer transcodes the audio.

"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.

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.

Mono a1,a2 instead of stereo a1+a2

My FCP project has its sound in two separate mono channels a1 and a2 (in Viewer tabs). When I close the mono tab, a stereo tab appears but it carries no signal. Now I cannot treat the two channels both at the same time in raising and lowering gain (with the pen tool). How can I combine these two to act as a stereo pair?
Hans van der Meer

To create a stereo pair:
1 Select a pair of mono audio clip items in the Timeline. (Use the Command key to select the second item, if necessary.) If you click one item of a linked pair, the other item is also selected.
2 Choose Modify > Stereo Pair (or press Option-L).
The stereo pair indicators appear on the selected clip items in the Timeline.
If the clip items you want to make into a stereo pair have different durations, the clip items are trimmed to the region where they both overlap. The levels, pan settings, and filters that were applied to the top clip are applied to both, and the clip attributes from the bottom clip are ignored.
+Source: Final Cut Pro User Manual+

Encore Transcodes MPEG-2 Audio & Bitrate Error During Build

Encore transcodes the audio but the audio is already MPEG-2. The video and audio assets have following properties:
.mpv = 8.0 Mbit/s maximum (VBR 6-8 MB)
.mpa = 0.2 Mbit/s fixed
And during transcoding the error "Bitrate to High" stops the build process. Is there somewhere a limiter in action, or what is it?

Sir Wilkes...
Okay, I set the Bitrate to 9.4 Mbit/s, let's see if it works thru...
mpa:
The audio should be "MainConcept MPEG-Audio MPEG-1 Layer II-Audio" in stereo, however I have no program affirm that. The import works, I was just surprised that the audio gets transcoded, possibly to Dolby Digital. This company always delivers mpa's since they work with Avid. I have the video transcoded right there since the Avid 1x1 uncompressed quicktime codec does not work with any Adobe products, well, normally we do the Avid stuff on Mac but my boys are filming in London and Greenland so le chef has to do this one by himself.
This DVD is PAL.

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.

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.

Encore transcoded audio into mono instead of stereo!!

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