Can Compressor downmix from stereo (dual mono) to mono?

Seemingly simple question - when compressing DV/AIFFs to web H.264/AACs, is there a way to downmix from stereo(dual mono) to mono without boosting the level?
I don't care if it just uses the left channel, the right channel, or mixes both together - I just want it not to clip 0dB when it comes out mono. Is there a way to do this in Compressor?
(NOTE: without using the Peak Limiter filter to lower the level, which always seems to cause the job to fail)

I've been editing NLE for over 15 years and have never once used a "mono" track, never felt a need to, and Premiere tracks default to stereo normally, which matches my sources. All delivery is typically stereo anyway, so in the case you have with wanting to use just one mic, the Fill Left or Fill Right works perfectly to "Pan Center" so to speak. Hopefully this will suit your needs. Maybe I have tunnel vision and am not understanding how a mono track is uniquely useful, but always open to learning new things.
In the situation where I might need to switch mic sources from time to time within the same stereo clip, for instance a wedding with a shotgun and wireless lav, I just use the Razor to put cuts in the audio clip where I want to switch. I just alternate applying Fill Left or Fill Right to each cut segment as needed, and throw in an audio crossfade at the cut point for a smooth transition.
If I need to MIX the left and right channels in varying degrees of volume, I will duplicate the stereo track and apply Fill Left to one and Fill Right on the other and this has the same effect as two mono tracks, each centered. There's certainly many ways to accomplish the same thing with almost any aspect of editing and that's just how I do it, not wrong or right really.
Thanks
Jeff Pulera
Safe Harbor Computers

Similar Messages

Can Compressor downmix from stereo to mono?

Seemingly simple question - when compressing DV/AIFFs to web H.264/AACs, is there a way to downmix from stereo(dual mono) to mono without boosting the level?
I don't care if it just uses the left channel, the right channel, or mixes both together - I just want it not to clip 0dB when it comes out mono. Is there a way to do this in Compressor?
(NOTE: without using the Peak Limiter filter to lower the level, which always seems to cause the job to fail)

First you have to split up the interleaved stereo file->in the Audio bin select "copy/convert" (or hit control+c) in the menue select "Interleaved->split" and tick the box "add to Audio bin"
Now switch Audio track 1 to "Left" at the very bottom of the channel strip->long click into the stereo symbol->menue opens->select "left"
Do the same on Audio track 2 in this case choosing "right" at the bottom of the channelstrip
Now select the reimported split stereo file in the bin and split it up into two seperate files in the edit menue->"split selected Split-Stereo-file"
You now have created two independendent files for left and right and can drag those onto your Audio tracks 1/2 in the Arrange - of course you need to pan track 1 to the left and track 2 to the right to retrieve your original stereo image

How can I switch my output audio from stereo to mono?

Hey,
I can only hear out of one ear and I would like to be able to listen to the other half of my music on my headphones, how can I switch my audio from stereo to mono?
Thanks!
Zach

http://www.radioshack.com/product/index.jsp?productId=2102690
http://www.scansound.com/index.php/stereo-to-mono-adapter.html
Or you could buy a mono/one ear headset. http://www.beso.com/2699431644/detail

Switching from stereo to mono...

is there a way i can switch from stereo to mono for recording volcals in garageband?if so...how??thanx much

In the Track Info window where you select your instrument or preset, you can also select the channel through which you record - either one channel (mono) or two (stereo). Set it to one channel.

How can I convert my iTunes media from stereo to mono?

Just a sound preference I would like to have. Lets keep it simple. (iTunes 10.6.1)

http://www.radioshack.com/product/index.jsp?productId=2102690
http://www.scansound.com/index.php/stereo-to-mono-adapter.html
Or you could buy a mono/one ear headset. http://www.beso.com/2699431644/detail

Changing Tracks from Stereo to Mono

Hey All,
I have a bunch of tracks I want to make a project out of, some are stereo and some are mono, I decided to go with mono, anyway to change the stereo tracks to mono in GarageBand or in a 3rd party app?
- Thanks Zach

Right, we don't have to start fighting about words. What I wanted to say is that audio editing is just a minor part of what GB does, and in order to keep it simple and easy to use for beginners, they kept the audio editing capabilities to a minimum (Logic, which is based on the same engine, can do a lot more). So if you only want to do audio editing, it makes sense to use a simple audio editor with all its strengths. The comparison to text editors is not bad: Word is a word processor and document production tool, and editing text is just a small part of it. So people who really want only an editor (e.g. programmers) don't use Word for their purpose but things like BBEdit that gives them more options for the pure editing part.
But you're correct, we're straying away from the topic, and I'm glad you sorted your problem out!

Windows 7 switches from Stereo to mono upon record start ?

I'm beginning to regret Selecting Windows 7 (64bit) OS for my new Laptop (HPdv6) (IDTonboard sound for now)
intended in large part for audio recording -- ignoring what I had read about audio problems in this OS optomistically hoping the would be fixed already. XP had always performed well for me. Here is my current problem which I've really been fighting for weeks in a Trial Copy of the current Audition without success.
Although I do have Ausio driver -- the built in Audition driver seems to work best , and I get everything ready to go selecting stereo 44100 16bit file to avoid confusing the many issues I've been having, press f10 to Double check in the edit window that I am actually getting differentiated separate stereo tracks --- then press record button --- and thats it -- from there on out two identical tracks that might as well be mono.
Again and again -- I have no idea why -- and with all of the problems I've had with windows 7 I don't really blame Audition --- but I would sure like to figure out how to fix the problem. I've all ready read Microsoft forums and there solution is to blame any third party software for problems that are very obviously within Windows 7 - so I'm not optomistic about looking for help in that direction (grin!)
thank you

So in the Edit View Hardware setup, what input setting do you have as a default? If it says something like [01M] then that's what you will record - mono on both channels. What you need is to select a default that says [01S], if that isn't what you already have. If it is - well, then I'm not sure what's happening at all, because for reasons that you've already alluded to, I'm using XP - simply because I'm a pessimist, and we get all the nice surprises if something actually does work...
Optimists are only ever going to get disappointed by the real world, I'm afraid.

From stereo to mono?

I can imagine this is a very simple question, but I'm yet to find the quick answer...
After importing some tracks, it has made a left and a right channel into one stereo track. How do I separate them out into two mono tracks??

First you have to split up the interleaved stereo file->in the Audio bin select "copy/convert" (or hit control+c) in the menue select "Interleaved->split" and tick the box "add to Audio bin"
Now switch Audio track 1 to "Left" at the very bottom of the channel strip->long click into the stereo symbol->menue opens->select "left"
Do the same on Audio track 2 in this case choosing "right" at the bottom of the channelstrip
Now select the reimported split stereo file in the bin and split it up into two seperate files in the edit menue->"split selected Split-Stereo-file"
You now have created two independendent files for left and right and can drag those onto your Audio tracks 1/2 in the Arrange - of course you need to pan track 1 to the left and track 2 to the right to retrieve your original stereo image

Stereo-to-mono glitch when match-framing

While searching for an answer I found a posting from ChiaMac dated Nov. 15, 2005 which describes the same problem I am experiencing. I have pasted the post below. Does anyone have an answer ?
Hi,
Three different editing systems, all running OS 10.3.9 and FCP 4.5 -- an iBook G4, PowerMac G5, and PowerMac G4.
Quite often, when match-framing in the timeline to bring up a clip in the viewer, the viewer will show dual mono audio, whereas the source clip has stereo audio. Then, when I try to cut that viewer clip into the timeline, in this sequence or another, it will be dual mono. Quite irritating.
It is quite replicable. Not all clips will produce the stereo-mono result, but it is replicable with the same clips over and over.
The "linked selection" has no effect on the process, no one has pressed command-L by mistake, and all audio settings on each of the systems are set to capture and output in stereo.
Is this a known FCP 4.5 HD glitch? I haven't seen it listed anywhere when I've searched for it. Any ideas, suggestions...?

>When converting a file from stereo to mono, Audition severely suppresses the amplitude of the entire file. This happens when using both the Convert Sample Rate method, as well as exporting a file from multi-track.
>It gets weirder: files that were recorded quite a while back will process this conversion just fine, but newer ones will not. All files are recorded in 16-bit 44100 stereo and saved as a Windows PCM wav file - so as far as I can tell there is no difference and I'm simply confounded.
Generally when this happens, it means that there isn't that much stereo (ie, difference between the two channels) in the file anyway, and one of these two channels is inverted - so that what happens when you combine them is that the 'mono' parts then cancel out, rather than add together, and all that's left is the difference - which looks pretty much like what you've got.
To test this, the thing to do is to select one channel only in EV, and invert its polarity (Effects>Invert). If you now get more like the waveform you were expecting when you convert to mono, then you've found the cause. But not necessarily the reason for it...

Stereo to mono

how do I switch from stereo to mono in FCP?

also make sure you do not have "Downmix" enabled ... it is toggled On/Off by using the Downmix button in the Audio Mixer window, it looks like a bowtie, and sits just above the Master fader.

HT4589 How do I change the audio to dual mono from stereo when using Share to DVD in Final Cut 10.1?

How do I switch the audio to Dual Mono from Stereo when using Share in Final Cut Pro 10.1? Even though the audio is all in dual mono in the timeline, it lists it as stereo in the share box.

Hi rationale1,
Welcome to the Support Communities!
The share to DVD settings in Final Cut Pro X use the Dolby Digital settings which are stereo for DVDs. So this can’t be done directly in Final Cut Pro X.
The link below will explain the Dolby Digital parameters and options in Compressor 4. You may need to research a different DVD authoring software to achieve your desired result.
Dolby Digital - Compressor 4 User Manual
http://help.apple.com/compressor/mac/4.1/#cpsrb71736a2
Dolby Digital
The built-in Dolby Digital settings (in the Create Blu-ray and Create DVD destinations, as well as the built-in AC-3 and EC-3 audio settings) use the Dolby Digital transcoding format. This format encodes Dolby Digital (AC-3) and Dolby Digital Plus (EC-3) audio files that contain multiple audio channels, including 5.1 surround sound. You can also create custom settings that use the Dolby Digital transcoding format.
Note: All files intended for video and audio DVD authoring must have a 48 kHz sample rate as required by the DVD specification.
DVD Video: Choose this option if you’re encoding for use in a DVD video authoring application.
DVD Audio: Choose this option if you’re encoding for use in a DVD audio authoring application.
Tip: For stereo encoding, rates of 192 kbps and 224 kbps are typical and will produce good results. For Dolby Digital 5.1 encoding, a rate of 384 kbps is recommended. For 5.1 Dolby Digital Plus encoding, a rate of 192 kbps is recommended.
Cheers,
Judy

Transcoding XDCAM from stereo to dual mono

I'm actually using Compressor at the moment, but am trying to convert HDV clips shot in stereo into XDCAM HD clips that will support write-back to my PDW-U1. But the U1 only supports "dual mono" audio, not stereo. I'm looking at the audio tab in my Compressor settings, and don't see such an option. I'm currently running tests, but has anyone found a way to create supported audio for write-back to XDCAM devices?
Chris.

Panning the audio to the center does not work for me. Once you choose Dual Mono, a single track will be either left or right depending on which track it's on. I worked around this by making a new sequence with "Dual Mono" as the audio output. I then dragged the original HDV sequence into that timeline and my single channel-1 audio channel now comes from both speakers. But it's not stereo. Its Dual Mono. I wrestled with this into the wee hours and this was the only work around I could find to output a show to XDCAM without the audio being messed up.
Somebody needs to seriously get to work on fixing this problem. Many broadcasters are now accepting XDCAM as a submission format. This is great, but it has some serious drawbacks as it sits right now.
Ken

Multichannel audio downmix monitoring / "Map to Dual Mono" disengages when working with another sequence

I typically like to edit with multichannel / mono audio channels, but monitor audio with regular speakers by way of downmixing. I found the useful "Map to Dual Mono' button in the audio track mixer which allows one to monitor all the split channels mixed. The problem I've encountered is when I switch from the multichannel sequence I'm working in over to a regular sequence with other audio settings, and then go back to the multichannel sequence that I started with. When I do this, the "Map to Dual Mono" button disengages, and I'm not able to monitor the audio in the mixed way I'd like. After pressing the "Map to Dual Mono" button, everything's o.k. again.
Is there a way that once the "Map to Dual Mono" button is activated, that it stays activated, without having to re-press it again and again?
Here's a video description of my audio monitoring question: Adobe PP CC downmix disengages - YouTube

mmmm this is an odd one... the only thing I can think of is that you are changing these clips once they're in the timeline. It's done with a keyboard shortcut: option+L... it will change a dual mono track to a stereo pair. You can change these files back though... typing opt+l toggles the condition back and forth.
Jerry

Can't get a clip to behave as Dual Mono

FCPX 10.0.9 is refusing to treat just one of my clips as dual mono.
When I right-click, show in timeline, it opens in a timeline with a single audio track showing.
For all the other clips / projects, right-click -> show in timeline reveals two separate audio tracks.
This clip was shot in the same exact way as every other clip. In fact, it was shot in between other clips that work.
When i select the clip, the inspector shows Channel Configuration - Dual Mono, in both the timeline and the event browser. Same as all the other clips.
If only I could slip the audio separately in the project timeline - but if I try, all I can do is select part of the clip - I can "Expand audio components" and see the two mono tracks in the timeline... but if I try to move them, all I can do is select parts of the clip, whichever tool I use. Can't move them separately.
Here's what I've tried:
1. trashing and re-importing the clip.
2. trashing and recreating the project.
3. doing both of those together.
3. duplicating the clip and importing that into a project. (this solved the same problem for another clip, but doesn't work on the current clip).
4. Quitting FCP and restarting.
5. Setting the source clip to stereo, back to dual mono, then re-placing it into the project.
6. Waiting for all the background rendering, wavefom generating, etc (this solved it for another clip that was refusing to be dual mono).
7. Copying the camera card to the hard drive and importing from there instead of straight from the card.
8. Importing the clip with "separate mono and group stereo audio" checked, then again with it unchecked
9. Opening the clip in quicktime pro 7 and changing the audio channels from "left" and "right" to "mono" and "mono."
10 quitting, renaming the clip in the finder, and reopening FCPX
One thing I notice is that through all theses steps, FCPX never has to re-generate the audio waveform files for this clip. It is seemingly remembering the clip and using a saved audio metadata set of some kind, which I think prevents me from solving the problem...
Dang! I was so enjoying FCPX after a year of premiere pro. Thought 10.0.9 had ironed out a lot of bugs, but glitches are the worst thing ever.

Wow - hours and hours spent... no solution...
OK, when I "expand audio + video" in the project timeine I get...
Then collapse that, and "expand audio components"
Wow! Dual mono. And the waveforms are clearly different, indicating true dual-mono. But I can't seem to independently move those tracks; all my tools just try to select parts of the clip.
If I click the clip and "open in timeline", it looks as above, but I no longer have the option to "expand audio components."
So for a different example, one that worked without any trouble or tricks...
Then right-click, open in timeline...
Very different result. That clip was shot AFTER the non-working one. The clip I shot before works as well. The odds that I changed something on my camera for that one clip, and then changed it back...??
I went through all my camera switches and menus (HMC-150, shooting AVCHD) and can't find anything remotely relevant to the problem at hand.
Also, as I said in my list of attempts at solving, a couple of other clips had the same problem and it went away with solutions 3 + 6 above. So it's definitely, in my mind, a program glitch.

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.

Can Compressor downmix from stereo (dual mono) to mono?

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