How to convert mono to stereo

Hi there,
I have a dialogue track that is mono (i.e: the audio appears only in the left channel). I have searched far and wide for help on how to do this in Soundbooth but haven't found great results. Also, I have found how to do the vice versa and how to do it on prmier, but that's not what I'm looking for. Does anyone have any solutions? :'(
Cheers and thanks in advance,
Nikhita

I see this was asked a few weeks ago but in case it's helpful, I'll reply.
I actually have just written an answer to anotehr question on editing spearate channels. The solution covers how to save to a mono file and do the reverse. Look at:
http://forums.adobe.com/message/5703311#5703311
Dean

Similar Messages

How to convert mono to stereo audio

I updated my software and now I cant seem convert audio recorded on a single channel mic to both channels with the new version of iMovie. I know with previous versions you could open the file in Quicktime, but the Quicktime software is also new and doesnt have the same options. Reverting back to iMovie 9 also doesnt seem to be an option. Any suggestions/advice??
Thanks!

dainternetguru wrote:
Yes I'm aware I can still use iMovie 9, which is what I've reverted back to until I can fix this problem.
For now, I think that is the best choice.
You could also buy QuickTime Pro 7 which will allow you to do the same mono conversion that iMovie version 9 does.
http://www.apple.com/quicktime/extending/
Matt

How to convert mono audio to stereo during import?

When I shoot my videos for YouTube I use an external mic which works great but when my camera records it, it is mono sound, so only the left channel of my source videos contain the talking.
In the previous version of iMovie 9 I used to be able to export using QuickTime and convert the audio to mono so the final video which is uploaded has sound coming out of both speakers.
Honestly I don't care what format my exported files are in, as long as they're HD and the audio is good. So the new .mp4 file format is no problem for me with iMovie 10.0.1
In the lastest version of iMovie (10.0.1) I can't see a way to convert my mono audio to "real" mono or stereo sound (whatever it's called) so the sound comes out of both speakers. Having the talking only coming out of one speaker now makes me look like an idiot on YouTube.
I tried a stereo/mono adapter where the mic connects to the camera but it resulted in no sound. So I'm hoping I can use an audio fix somehow using iMovie 10.0.1 to fix 'er up. What are my options guys?
Yes I'm aware I can still use iMovie 9, which is what I've reverted back to until I can fix this problem.
Thanks.

dainternetguru wrote:
Yes I'm aware I can still use iMovie 9, which is what I've reverted back to until I can fix this problem.
For now, I think that is the best choice.
You could also buy QuickTime Pro 7 which will allow you to do the same mono conversion that iMovie version 9 does.
http://www.apple.com/quicktime/extending/
Matt

Converted mono to stereo

I converted a left channel recording from imovie hd to both channels using quicktime. Now the audio track is way to long even though the size is the same. Format: Linear PCM Channels: Mono Rate: 48 (the rate decreases the size but it doesn't matter). Any ideas how to keep the audio the same length.

I can't reproduce the problem with "Save as..." again, so the tracks switched from mono to stereo somewhere between the time I recorded them and by the time I was done tweaking their EQ and compression settings. I don't know how to delete or edit my discussion question above, sorry!

Converting Mono to Stereo

Greetings All, I recorded an interview with a client, I mic'd him with a chorded lavalier mic that I had in my bag, I didn't realize til later that it had a mono plug... To make a long story short I would like to make this be heard in stereo (or 2 channels left/right) I have viewed some youtube videos on how to do it i.e. sending to soundtrack pro - converting stereo to mono using left & right channels. It seems to work just fine in soundtrack but it doesn't work in final cut pro. What am i doing wrong?
Using Final Cut Studio 2

Using a stereo mic rather than a mono one wouldn't make any difference when you're recording a single source of sound that doesn't move around. Do you really have a stereo capsule on a lavalier? ONce clip is in FCP all you need to do, assuming you don't want the audio in the centre of the stereo image, is pan the audio towards the left or right to suit using controls in the viewer audio tab.

Convert Mono into Stereo

I am using an older lapel mic and it records in the mono format (I think). On playback I am only receiving sound out of the left speaker. How can I convert this, using Soundtrack Pro, either into a dual mono format or into stereo with the end goal of getting sound out of the left and right speaker?

itsme213 wrote:
I have several audiobook mp3 files which only have left channel sound -- makes the volume too low when I play the iPod through the car stereo when driving.
Is there a way to convert to stereo by just replicating the left channel?
Thanks!
Edit > Preferences > General > Import Settings, Choose "MP3 Encoder" and "Custom." When the "Custom" selections come up, set "Channels" to "Stereo."
Now, highlight the track in your iTunes library, and use the command "Advanced > Create MP3 Version." This should create a new version in stereo. It will leave the original in place, so you now have two. Make sure to use the newer one in the car.
I have not tried this but it should work.

Pinnacle has L & R audio files... how to convert to 1 Stereo for use in Premiere

When I import my video captured by pinnacle into a premiere sequence, I need to bring in 2 seperate audio files as pinnacle records L/R on seperate files, These files are then brought into a sequence, and dont go to the main Stereo track for the sequence, and instead go to 2 new audio tracks. Is there anyway around this? Can I import 2 tracks as one stereo track or something? Or does anyone have a workaround to this? I plan on using On Location for capture purposes going forward... but I have TONS of footage to edit first that was captured by Pinnacle.

My decision about what to do would depend on the length of the current clips, the total length of all the clips, and the type of editing. By type of editing, I mean whether I am going to have a lot of minimally edited coverage of whole games versus short bits of highlights or both. Also, I see this is high def footage, so I'm going to worry about what problems I may find in recapturing. I lean toward recapturing, but that is a nightmare. Then again, your situation is a nightmare.
In any event, another option, similar to Colin's, but not creating as many sequences:
I don't know if it was mentioned: you can create a modified preset (and then use it as a preset) with 2 mono tracks and a stereo master. This avoids the extra tracks and you don't have to manually modify each sequence.
Your clips are not just random audio that have to be synced: they belong with video they were captured with. Sync should not be an issue, unless the Pinnacle capture went wrong. So you can simply select a continuous (from the captures) group of video clips, lay them down on V1, then the same for the left wavs to A1 (mono), then right wavs to A2 (mono).
I don't edit m2v yet, so I don't know if a bunch of m2v clips with wavs for audio creates any problems or not.
To the extent that you are doing clean up of a long sequence, you just cut in this sequence. to the extent that you are doing highlights etc, you can go through this and cut and copy to another sequence, or use markers and nest etc.

Capturing mono VHS footage, how do I convert audio to stereo?

I am creating dvd's from some old VHS tapes, and the audio track is mono, I want to know how to convert audio to stereo? Do I start with the audio settings on Mono or stereo, and then what is the next step to get mono audio converted to stereo?
As always thanks in advance for reading and replying to my post.
Sebastian

SebastianMacLuver wrote:
I am creating dvd's from some old VHS tapes, and the audio track is mono, I want to know how to convert audio to stereo? Do I start with the audio settings on Mono or stereo, and then what is the next step to get mono audio converted to stereo?
Are you wanting to add a second channel of audio along side the mono track?
Or, are you wanting to double the mon track into a faux-stereo track?
Either way, DO start with a stereo track on your audio settings.
But if your VHS audio is not split into two separate channels of sound, then there is no way to get true stereo.
However, for a faux-stereo sound, try copying the original mono track, paste it to a second audio track then nudge just that track by one frame.
Listen to it and if it doesn't give enough presence to the overall sound, try another frame nudge until you get the sound you like.
This isn't true stereo but will create more of an aural landscape that might satisfy your request.

Mono track on boom mike - how to convert to stereo

I actually have another sound question: When we where shooting we the two audio channels as follows: one came from the camera mic and one from a boom mic.
Now I think I only want to use the sound from the boom mic. So what I have then is one mono track of live sound.
What do I do with this? How do I convert it into stereo. The cameraman who shot the stuff for me told me "you just copy the track" - I can do this of course but then I have essentially two mono track as a stereo track. Is that o.k.?

If you are worried that your mono track will sound too "flat," or won't locate properly in a stereo field filled with other sound elements, then here's a tip for you. I use this for voiceovers and on-camera speech when I have wild sound, music, or other sound events happening underneath in the mix.
Add a very small and subtle amount of stereo reverb to the mono V/O or speech track.
Use a short delay or "small room" setting on the reverb. Of course, "season to taste" is the rule for the length of delay with regard to blending the reverb into the rest of the audio. But usually for speech, a short delay works best in my experience.
My method is to add just enough for the reverb to be perceivable, and then dial it back a little.
This will really help place that sound source in a "hard center" position in the stereo field.
Also, if you are mixing speech, dial in about 1 to 2 db boost of 1000hz EQ to aid in speech intelligibility. Again, "season to taste."
Good luck.

Mono to stereo converter for 6600

Hey guys,
Does anyone have any clue how to convert music output from mono to stereo in the nokia 6600?
Thanks,
I need a reply soon plz!!!
Thanx

It is a physical impossibility. If there is only one line out signal, you can't convert it to two with any converter (software or hardware).
If you really must have stereo output, then you need a new phone.

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

How to convert video and dvd for iPod

1. Download, install and run PQ DVD to iPod Video Converter. It can convert from DVD, Tivo, DivX, MPEG, WMV, AVI, RealMedia and many more to iPod Video.
(PQ DVD to iPod Video Converter Download)
2. Click "Open ..." button and choose a video file or DVD disc to open. Wait for the movie to start playing in the preview window.
3. Based on the aspect ration of the video source PQ DVD to iPod Video Converter will choose the best resolution for the output iPod video. Nevertheless you can select a resolution of your choice to stretch/squash the picture. Alternatively, you can choose a Crop Mode to cut unimportant parts of the video (like top/bottom black bars or subtitles).
You can also adjust the desired quality to reduce the output size of the movie.
In the preview window you will see what the resulting movie will look like.
When you have set the desired settings simple click on the "Record it" button to convert the video/DVD.
Depending on the settings a 60 minutes video is converted on average for 15 minutes.
4. When the process finishes you can test the recorded video file on your PC using QuickTime to see if it works well.
Then launch iTunes, add the recorded file into the library and update iPod (under iTunes' File menu). And have a nice time!
Additional Settings
1. Video Settings
Video Frame Rate
Known as Frame Per Second (FPS). It refers to the number of pictures displayed in 1 second in order to form continuous motions. The default frame rate is 15 fps. You may choose 24fps to get more continuos motions.
When selecting higher fps, increase the movie quality and size a little. This is because more frames need some amount of additional motion data to be stored.
Brightness Level
Increase the level to make video appear brighter on your iPod screen. The default is level 0 (No brightness change from the original video).
2. Audio Options
Audio Quality
There are 6 audio quality modes to choose: 32kbps Mono, 48kbps Mono, 48Kbps Stereo, 64Kbps Stereo, 96Kbps Stereo, 128Kbps Stereo.
Audio Bitrate (in Kbits per second)
Audio bitrate refers to how many data storage is allocated to store audio signals. The higher audio
bitrate, the better audio quality.
Audio Volume
You can change output audio volume in "Output Settings" dialog. The default volume level is 5 (original volume).
Stereo to Mono
When the output audio is set to Mono, you can choose which stereo channel (of input source) to be copied into the Mono channel (output). It is useful for some video sources (e.g. VCD) which use the left, right channels for different languages or for karaoke.
3. DVD subtitle(subpicture), language
It is recommended to use the native DVD menu in the preview panel to set subtitle(subpicture) and language. (Click "DVD menu" button on the right to show native DVD menu in the preview panel) You may also change the subtitle(subpicture), language in the program's Options menu, but there are some DVDs that require the change must be made in the native DVD menu instead of the program's menu.
Windows XP
Windows 2000
Windows ME

Thank you for your posting, which is very helpful, however it will be better if you can post on the Video forum as well
http://discussions.apple.com/forum.jspa?forumID=807
By the way, I must say that it is a very good post

Mono to stereo or combine audio

I have an iMovie that is an electronic white board. I recorded an audio file from my Nikon (so I would think it would be stereo) and added that to the whiteboard video. I've been told the audio is mono, but I don't know how to verify that or how to correct it. 1. How can I tell if the audio track is mono or stereo? 2. If it is mono can I convert it to stereo or play it as mono on both tracks to simulate stereo? Thanks.

Hi
In iMovie You can not do any of it.
But You can
• From Event's - iPhoto Videos take it and drop it into a new Project
• From Project You export it as QuickTime and as Audio only (.aiff)
• This file You can open in an Audio/Sound-Editor as Audacity (free on Internet) or GarageBand ( might work ? )
And here in e.g. Audacity You can see if the Right and Left track are identical = MONO or have slight differences. I do this by invert one track and add it to the other - if it is silent - then the tracks are in Mono if not then You've got a Stereo Sound from start.
Mono to Stereo = Impossibly
Mono out via Left and Right speaker - Just copy the audio in one track and paste it into the other - BUT still when You listen all will come from center. Simulated Stereo - I've never seen any working application that can produce this.
When done in Audacity - then Save (still as .aiff) and import this to Your Movie project.
Far from so easy as in FinalCut Pro. Where You just pan audio to the other canal.
Yours Bengt W

Your experience with Modify Clip "Stereo" or "Mono as Stereo"

Using CS5.
When recording my project our audio was recorded externally. I have all my audio tracks recorded as mono and I want to use all of the tracks as stereo.
I found instructions on how to do it, but I have some questions.
I highlight an unused audio clip on my project panel and then use Clip> modify > Audio channels.
Among the choices are Mono, Stereo, Mono as Steeo and 5.1
Since my clips are mono, I assume I should select "Mono as Stereo". But is there a subtle difference to selecting "Stereo".?
In addition, I want to fill both right and left tracks with the recording that was recorded in mono. I would like to avoid having to use the audio effects fill right / fill left. I assume using either "Mono as Stereo" or "Stereo" will fill both right and left tracks -- but, again, is there some subtle differences -- or best practices?
Thanks
Rowby

Hi Jim,
Just checked the "mono" track with my headphones -- and indeed you are correct. I hear it in on both channels.
So nothing needs to be done.
However, then, why does Premiere Pro have these "features"?
http://help.adobe.com/en_US/premierepro/cs/using/WS1c9bc5c2e465a58a91cf0b1038518aef7-7f41a .html
Thinking more about this, however, as I write this reply,I like putting a mono track directly above or below a stereo track -- and as you know, you can't put mono track into a stereo track (you have to create a new mono track, which is a minor pain) -- so that would be at least one reason to convert the mono to a stereo..... I have to create a new mono track - and sometimes that track is far below the stereo track I want to mix it with.
I also notice this article which implies you can make it so when you import any track (mono or stereo) into premiere it will be (based on your preference settings) "converted" to mono, stereo, mono as stereo) etc.
http://help.adobe.com/en_US/premierepro/cs/using/WSAB1EDD0E-ADC2-4a10-B399-E809E588618B.ht ml
Rowby

HOW CAN I CONNECT A STEREO MICROPHONE TO MY SONY HXR-NX5U CAMCORDER?

I recently purchased a SONY HXR-NX5U professional camcorder, and want to be able to connect an external, wired, STEREO mike to it. But I don't quite understand HOW to do it. ANY SUGGESTIONS?
The camera has 2 XLR mike-sockets, each of which is obviously for a MONO, not STEREO, mike.
And the wire of the STEREO mike that I want to be able to connect has a STEREO MINIPLUG (3.5mm), not an XLR plug, at the end
Is the solution about CONNECTING this external STEREO mike as simple as doing what I've TRIED to do (but doesn;t seem to work) -- which is: (a)insert, into the camera's 2 XLR-sockets, 2 XLR-plug-to-phonosocket adapters, (b) plug into those 2 phonosockets a Y-Connector which, at the "Y" end, has 2 phonoplugs and which, at the 3rd end, has a STEREO MINISOCKET for the microphone, and (c) then insert the STEREO mike's miniplug into the Y-connector's minisocket?
That's what was recommended to me and which I've tried, but it doesn't seem to work. Maybe I just don't understand yet how to turn off the camera's built-in mike and turn on this external STEREO mike -- but the built-in mike keeps working and this external stereo mike -- hooked-up this way -- stays inactive.
ANY SOLUTIONS?
ALSO, I've been told that hooking up a STEREO mike this way -- assuming it works -- would give me REDUCED SOUND-QUALITY. Is that actually so? And if so, why -- and what can I do about it?

A few things...
1. If you are still hearing the internal mic check the switches on the side panel and make sure the internal is not being fed to channels 1 or 2. The ability to mix internal/external mics is a feature of the camera.
2. How are you powering the mic? If it doesn't have it's own battery/power supply it is expecting phantom power from the camera which it will not be receiving via the adaptors.
3. If the mic has its own power you should be able to do this via the Y cable provided the inputs are set to MIC and the side switches are set to INPUT 1 and INPUT two for each channel.
Hope this helps. Feel free to give our support team a call at 800 883 6817 if you'd like to discuss with a Sony tech.

How to convert mono to stereo

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