Stereo Audio Linking issue

I have recently moved to FCP from FCE...I am having a problem linking a stereo audio file, I want to edit audio without effecting video in timeline. When I unlink, the audio file acts as two mono files, so I have two do repeat edits. If I link, then the video is in the edit. I want unlink audio/video, but treat stereo audio file as one edit...does this make sense to anyone?
This was easy in FCE, by default it acted the way I want. I'm sure I have a setting incorrect...IDEAS?

You don't have to Unlimk your dual mono clips.
If you want to cut or ripple or slide or whatever, just hold the Option Key and then drag the head or tail of the video part of the clip. It will then only move the videopart...
Or press that button on the top-right corner of the timeline (or Shift L). It toggles the usage of linking on and off (by default there are 2 buttons there. The other one is 'snapping' ('n' on your keyboard))
Rienk
Message was edited by: Rienk

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Stereo Audio Treated Separately, How Do I Link?

I recently migrated from FCE to FCP. I love FCP, but there's one difference that's bugging me. In FCE, when you selected and manipulated a stereo audio track, each channel was linked, so when you changed the db level or applied a pen point to one track, the same would be done to the other. In FCP each audio channel is treated separately, so I'd have to repeat the same process for both channels. Is there an option or hotkey to make each audio channel linked like in FCE?

You can also use command/apple L to link/unlink the stereo pairs or individual audio tracks to video.
==================
Ken Glynn
Luminous Digital Media
http://www.videobozeman.com
Bozeman, Montana

Audio input issue - No stereo... Right channel only.

Hi
First to thank you for taking the time to read and consider this if you do - any help in this would be hugely appreciated
Ok - I'll try to make this as concise as poss but it needs some explanation:
I'm home-recording hobbyist musician. One of the things I would very much like to use the iMac for is to back up old four-track tape recordings, recording them as wav or mp3 as the case maybe and saving them to my hdd. Easy right? Apparently not, so far... let me explain:
On the tape recorder there is only an RCA stereo out (red and white, left and right). The very first thing I did when I got the iMac was download Audacity (the audio software), hooked up a stereo lead to the RCA outs on the tape recorder, and ran it into the line-in port on the iMac, using the 1/8" jack.
Now, sound came in, but only the right channel. The left channel was completely dead (ie when I panned the audio to the left, or if there was a sound in the mix that was only in the left channel, it was absent).
Since then I've bought Logic Pro and and an audio interface and this presents the EXACT same problem... Nothing in the left channel. (please note, I am aware you can "fake" stereo by setting a channel-strip to "mono" so that there is sound on both sides, but get this - it only splits the right channel in two - so you still don't have the left channel or genuine stereo signal frustratingly)
It should be noted that stereo sound is not a general problem on the system. Stereo output is perfect (ie on itunes, cds, online etc - or if I'm using softsynths in Logic for instance) it is solely an AUDIO INPUT issue.
Needless to say I've explored all options in sys prefs to no avail.
It should also be noted that I have also tested the actual output of the tape recorder and used the same leads to line into a home stereo system no problems.
Does anyone have any idea what I'm talking about or how this could be resolved? I am even open to suggestions for peripheral equipment, sofware additions etc - any questions at all, just ask.
Thanks again, any input would be welcome.
EDIT: I also posted this in the general iMac forum. Posting here for people w specific audio knowledge thanks!

Pancenter, thanks once again.
Sorry about delay replying - have had an internet outage here just to add to my woes haha.
Anyway, the good news is that I think I've cracked it:
After updating the OS per your suggestion, uninstalling both Audacity and the m-audio (profire 610), and lastly resetting defaults on sys audio midi prefs I was still experiencing this problem - just on a line-in to Garageband. Pure frustration.
So eventually I just elected (in lieu of chucking the hardware out the nearest window lol) to do a cold re-install of the OS (erase and install option, backup hdd done). As I bought the iMac in January the OS is 10.5.5 I think.
After install, before doing anything else at all, I opened Garageband, set up an audio track and set input prefs to Line in Stereo 1/2 etc, and hooked up the tape unit via rca and the line-in port. The result? Perfect 2-channel stereo.
My personal theory is that the problem was created by the audio interface installation - an m-audio "profire 610" - Tho Audio interfaces are a frickin minefield anyway between Macs and PCS, chipset compatabilities, dodgy beta drivers, worthless gadget-hawking etc etc... I also realised that while my first original attempt was on Audacity I had already installed the profire unit just immediately before (but didn't use it). I doubt it was Logic which is designed specifically for the mac - I feel this theory might be proven when I reinstall these.
So there you go - get the Audio interface right it seems.. And I've got stereo audio.
Thanks for your help and input Pancenter - much obliged.
Peace.

Restoring stereo audio track link to video track as source/destination

I've read everything I can find relevant in discussions & manuals but can't figure out how to get my two audio tracks (stereo) linked back to video track as destinations, as they once were, with video and audio source/destination tabs joined. In the patch panel (when I started this morning) I noticed that only A1 destination button had an a1 source. There was no a2 Source button to join to A2 Destination.
In my groping around I managed to also make the a1 source button dissapear as well. Link and Stereo Pair are checked in the Modify menu. Linked Selection button is on in Timeline.
What the heck am I doing wrong here and how do I get those Source buttons to reappear? Thanks for whatever advice you guys can give.
- Frazzled Idiot

"how do I get those Source buttons to reappear?"
The vn and an source tabs appear and disappear in the timeline depending on the clip in the viewer: if it is only video, there is only v1, if it is only stereo audio you have a1 and a2, if you have a standard clip audio + video you have v1, a1 and a2, and so on. Just depends on the clip in the viewer.
If you had only a1 source, it means that you probably had your clip unlinked, your stereo pair unlinked and you loaded only one of the 2 stereo tracks to the viewer. If you want to edit them back together select the video and 2 audio tracks in the timeline and cmd-L (link video to audio) and opt-L (link stereo pair).
After that when you load the clip in the viewer you'l have again v1, a1 and a2 source buttons ready to use.
Piero

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).

"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.

T60 - Bluetooth XP - Stereo audio

Hi,
My bluetooth is working on my laptop as I have recently done file transfers via Bluetooth, but it seems I am not able to set up stereo audio (a2dp). I understand that the Thinkpad Bluetooth with Enhanced Data Rate provides a2dp support to WinXP?
When I pair to the device, the service selection asks me to classify it as a "Personal hands-free device with no display", "Personal hands-free device with display" or "Not my personal hands free device". This is strange, as it is not a hands free device as all, it is purely a stereo out that receives audio over a2dp.
The pairing is successful, but windows does not recognise it as an audio device in Sounds and Audio Devices Properties from control panel and no sound comes out of the speakers. Any ideas?
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Hi beadwizard56:
Thank you for your post. I will do my best to assist you!
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Sparkles1
I work on behalf of HP
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How do I import AVI video with stereo audio (and keep it that way)?

Today I just discovered that all the AVI video with stereo audio I've ever imported into a Premiere Pro CS6 project has been mysteriously converted to mono. And I can't find any import setting anywhere that enable me to change this.
Here's the deal...
I've have an AVI file with stereo audio (the file is actually a stereo sound test that I downloaded to prove that I wasn't imagining things). On my hard drive, I right-click and view the properties:
Video
Length: 00:00:36
Frame width: 320
Frame height: 240
Frame rate: 25 frames/second
Audio
Bit rate: 128kbps
Channels: 2 (stereo)
Audio sample rate: 44 kHz
I click on it to play and listen with headphones--everything is playing in the correct part of the stereo spectrum. Then, I import it to Premiere, click the file name in the left content menu, and check the properties, suddenly they read:
Type: AVI Movie
File Size: 1.1 MB
Image Size: 320 x 240
Frame Rate: 25.00
Source Audio Format: 11025 Hz - 16 bit - Mono
Project Audio Format: 11025 Hz - 32 bit floating point - Mono
Total Duration: 00:00:36:15
Pixel Aspect Ratio: 1.0
Sure enough, I drag it into the sequence, listen to it, and it's indeed playing mono. Outside of Premiere, the original source file still reads and plays correctly with stereo sound.
When I import stereo WAVs and MP3s, it keeps the original stereo channels without me having to do anything special. I even just imported the same exact file as a MOV with stereo audio, and it showed up in Premiere as:
Source Audio Format: 44100 Hz - 16 bit - Stereo
Project Audio Format: 44100 Hz - 32 bit floating point - Stereo
What is going on here with AVIs? Am I doing something wrong? Are there settings I'm missing somewhere?
(And before anyone suggests I only use MOV in the future... that's not exactly the answer I'm looking for.)

Thank you for that info.
For video, the codec is MPEG-4 Video (XVID) and for audio it says MPEG Audio Layer 1/2/3 (mpga).
There are two issues with that file:
The first is the Xvid CODEC (not meant for editing), and then the MPEG Audio/MPGA. I would convert that file, to something that is more editable.
Good luck,
Hunt

Audio stereo signal split into 3 or 4 stereo audio signals (in one single clip)?

Hi,
facing massice transcoding issues when exporting a project I had to analyse the involved video/audioclips...
and found out that for some of the video clips the audio signals have been split into even 3 or 4 complementary stereo channels.
Note: Each channel contains just a part of the original signal. This is obviously due to cutting action ...
What can I do? I have no clue!
My question:
How to get one single stereo audio signal (2 channels) out of this mess?
Thanx big time,
Oliver

Assuming we're talking about shorter takes and not a longer, spanned clip, I don't think what you want can be done in PP. Nesting will always bring the audio over as one track.
You may have to skim the clip sequence in the Program Monitor and copy/paste the portions you want to use into a second sequence for output. This will preserve the audio.

Premiere Pro audio sync issues with 48khz audio on video file and 44.1khz audio on external audio

So, I recorded video and audio on my Canon 5D Mark II at 1080p, 23.976 fps, and 48khz, 16-bit Stereo audio. And I used a Zoom H4 to record an mp3 audio file at 44.1khz Compressed. When trying to sync the audio in Premiere Pro CC, the audio slowly loses sync over time. I already tried to convert the 44.1khz mp3 file to 48khz in Adobe Audition. But that didn't fix the problem. Any ideas?

There's always time-stretch changes to the audio file with "keep pitch unchanged" checked, I suppose. Mind you, I've heard of people doing it but haven't done it myself. There's other possible options I'm sure. There's been quite a few threads here on time-sync issues over time.

Stereo audio works only in FCE

I know this has been covered before but I would like some help to get from where I am now, out of the hole I seem to have dug.
Briefly, VHS video with HiFI stereo audio was converted with a Sony DCR TRV355 camera to DVPAL 720x576. Audio 16Bit 48Khz. Firewire cable plugged into the MAC running FCE4 and captured using 'capture now'. So far so good. I drag the clip to the timeline and the two audio tracks and the video track appear. The three names are all underlined. The two audio tracks are linked (the two arrows point to each other like an hour glass where the two tracks touch). The audio plays in stereo. I do nothing to this file, and quit FCE. Now, if I play that untouched captured file on a MAC or PC, in Quicktime, Windows Media Player, FLV whatever, the audio is mono, not stereo. Possibly only one leg of the stereo pair, or possibly left and right summed to mono, it's not easy to tell.
So I have two questions really:
One (not relevant to this problem as I cannot recapture the clip), what do I need to do differently next time to avoid this incompatibiliy?
Two, how do I get from here to being able to play the .mov file in any player in stereo, without degrading the picture? Thanks in advance.

... VHS video with HiFI stereo audio was converted with a Sony DCR TRV355 camera to DVPAL 720x576. Audio 16Bit 48Khz. Firewire cable plugged into the MAC running FCE4 and captured using 'capture now'.
This should have worked fine. A few questions -
Did you use the TRV355 as a converter between your VHS deck and your Mac, or did you record the VHS video to a tape in your TRV355 ... and later use FCE to capture from the TRV355 tape?
What Easy Setup did you use in FCE when you captured this video?
Exactly what versions of FCE, OS X and QuickTime are on the Mac you used to capture the video? Do you have QuickTime7 installed on this Mac?
Did you experience the "mono problem" playing the captured clip on the same Mac you used to capture the video, or did the problem appear on a different Mac?
When you experienced the "mono problem" were you playing the captured clip in QuickTime X or QuickTime 7?
For what it's worth, I have observed that if I play a video clip in QuickTime X that was captured on a Mac with FCE/QuickTime 7, for some inexplicable reason QT X does not fully recognize all the tracks in the clip. Mostly it thinks the clips are audio only, no video; but if I play the clip in QT7 it plays fine.

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 tracks unlinking themselves ...

Hi All,
I'm still using FCP HD 4.5.
My stereo audio tracks are automatically unlinking from each other and becoming separate mono tracks. I'm not unlinking them, they just suddenly started doing this on their own. I'm having to go back, highlight the two mono tracks, and click option-L to get them back to a stereo pair.
In some of these cases i have unlinked the audio track from it's video track (APPLE-L), but not in all cases. Either way, i can't figure why this would make a stereo audio track unlink itself into two mono tracks.
Ideas? (Besides upgrading my version of FCP)
Paul

You do not say if this in your timeline. You probably have the link button depressed or undepressed.
Check that first.
grammar police citation: "It's" is a contraction for it is or it has. There's no apostrophe in the possessive of the neutral pronoun; there are no apostrophes in any of the pronoun possessives: hers, his, ours, its, theirs.
bogiesan

Stereo audio too far right on built in speakers?

My stereo audio on the built in speakers is way off. Anyone else have this audio issue with their Macbook Pro 2.5 GHz i5, 4GB? The audio is pushed towards the right side way more. I've checked the system settings and the slider is right in the middle, but to get it so it sounds remotely balanced, I have to push it to about 25% from the left. So I checked this with my headphones and to my surprise, the headphones are properly balanced with the system settings sound in the center position.
So that lead me to try this... using the built ins I slid the balance all the way over to the RIGHT side... left speaker goes silent. But when I slid the slider all the way to the LEFT, sound is still coming out the right speaker. So that is a bit of an inconvenience. Any insight?

There's a "center channel" speaker for bass that's located towards the right side. That's probably where you're hearing the sound when you have the balance control set all the way to the left.

Audio Channel issue

If i play back ANY audio file, be it MP3, CD, something I've purchased from the iTunes store, it doesn't matter, I get a static hiss on the left chanels. Right ones are clear.
Everything was fine under iTunes 6x but as soon as they went to the 7x version this appers. I've tried uninstalling iTunes and going back to the 6x version, updating the lastest version of iTunes whenever its available in the hopes that it's fixed, I've even made sure my DirectX drivers were current.
I have no extraneous audio software on my system other than winamp. However, it should be noted that any other audio software, such as media player or winamp, doesn't have an issue with the audio files themselves.
Anyone got any ideas?

Pancenter, thanks once again.
Sorry about delay replying - have had an internet outage here just to add to my woes haha.
Anyway, the good news is that I think I've cracked it:
After updating the OS per your suggestion, uninstalling both Audacity and the m-audio (profire 610), and lastly resetting defaults on sys audio midi prefs I was still experiencing this problem - just on a line-in to Garageband. Pure frustration.
So eventually I just elected (in lieu of chucking the hardware out the nearest window lol) to do a cold re-install of the OS (erase and install option, backup hdd done). As I bought the iMac in January the OS is 10.5.5 I think.
After install, before doing anything else at all, I opened Garageband, set up an audio track and set input prefs to Line in Stereo 1/2 etc, and hooked up the tape unit via rca and the line-in port. The result? Perfect 2-channel stereo.
My personal theory is that the problem was created by the audio interface installation - an m-audio "profire 610" - Tho Audio interfaces are a frickin minefield anyway between Macs and PCS, chipset compatabilities, dodgy beta drivers, worthless gadget-hawking etc etc... I also realised that while my first original attempt was on Audacity I had already installed the profire unit just immediately before (but didn't use it). I doubt it was Logic which is designed specifically for the mac - I feel this theory might be proven when I reinstall these.
So there you go - get the Audio interface right it seems.. And I've got stereo audio.
Thanks for your help and input Pancenter - much obliged.
Peace.

Stereo Audio Linking issue

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