Receiving stereo audio

My Apple TV works great through the TV but I cannot receive audio to my home stereo. I am using a Radio Shack analog/digital converter, line out audio is connected to my stereo tape in. Please help

Hi,
iChat only does Mono.
7:36 PM Tuesday; March 30, 2010
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Stereo audio when using video camera? Any way to do this?

Is there any way to record in stereo (2 mics) when recording video with the onboard camera? Can the 30-pin connector receive a stereo signal when videoing? (iPad3, iOS 7)

I figured it out myself so thought I'd share this for anyone else who wants to record video with the audio portion in stereo, you can do this using Sonoma Wireworks' GuitarJack2 in conjunction with a mixer. Keep in mind this isn't a portable solution at all but the resulting audio is excellent, especially in headphones so this is great for doing a video of yourself singing and playing guitar (for example) and you want to capture a good stereo audio signal. Basically, the way is works is you plug your two mics (we're talking recording style microphones with the XLR connectors) into your mixer of choice. You then run a line out of the mixer into the 1/8" audio input jack of the GuitarJack 2 (it's a stereo line-in) and the 30-pin connector goes into your iPhone/iPad. There are a couple of settings you have to make with the software for the GuitarJack but once you've done that, you can then make some videos with terrific stereo sound. You monitor the audio via the headphone jack of your mixer. If anyone knows an easier way to do the same thing, please let me know but this is the only way I've found.

If I want to play my ibook mac g4 through a receiver what audio cord would I need?

If I want to play my ibook mac g4 through a receiver what audio cord would I need?

There is a patch cord that has a mini-plug (stereo) on one end and an RCA set of jacks that are usually red and black polarized on the other, if the desired ports are the old standard inputs for audio equipment.
Other kinds of patch cords with the mini-plug that fits the headphone jack in the iBook and different connectors on the other end, are available that could attach to a different set of ports. But I don't recall the generic name.
Could be as simple as 'stereo mini to RCA jack'. Sorry!
Good luck & happy computing!

"Up Mix" from 2-channel "Stereo" audio content to 5.1/7.1 Surround

Hello,
This is a feature that I had strongly hoped would make it to Media Center in Windows 8, but didn't. Please consider this for a future update and/or the next version of Windows...
Feature Request: "Ability to Configure Stereo Up-Mix Capability in Windows Media Center and/or Windows Media Player from 2-channel Stereo to 5.1/7.1 Surround so Stereo MP3/WMA audio files output to *all* speakers in my system, not just the left and
right main speakers."
More information:
My audio content (MP3s, WMAs, etc.) are of course all 2-channel stereo format (left channel, right channel). My home theater PC outputs to my home theater receiver (which is a 2012-model Sony 5.1/7.1 receiver) via HDMI. When I play
2-channel music (MP3s, WMAs, etc.) from Windows Media Player (WMP) and Windows Media Center (WMC) both in Windows 7 and Windows 8, I only hear music from the left and right main speakers, *not* the subwoofer not the rear surround speakers.
In order for this to happen, WMP/WMC would need to "up mix" the stereo signal to take full advantage of my physical speaker configuration (as specified in my Windows' Playback Devices configuration, which Windows is able to discern from the capabilities of
my receiver). Media Center even has an Audio setup in which the end user configures the audio configuration to either Stereo, 5.1, or 7.1 yet music is still output over only two channels!
I would like to see WMC/WMP either "automagically" perform the "up mix" or provide the user with an option to enable/disable it when 2-channel Stereo audio content is played.
Too difficult? Rhapsody.com already accomplishes this with its online audio player! Note that my audio equipment has the capability of forcing output to two channels between the PC and the receiver, which my receiver will then up-mix, but this
requires physically maintaining a dip switch and also several button presses on my receiver's remote... and this physical configuration must be updated each and every time I switch between audio and movies. Too much work when it could be accomplished
automatically by WMP/WMC!
Thank you for your consideration of this feature request!
-Tretchie

The ability of windows to better control audio channel output is definitely an issue that needs to be fixed. It's really basic in this day and age where everyone and there mother has more than two speakers (i.e. 5.1 or 7.1). I understand that certain media
players, or certain decoders/channel mixers can be a workaround for this problem. But that's not enough. Today, we have many different sources for audio that are not just files on a computers:
1) Video/Movie files on computers (played through media center, MPC-HD or other)
2) MP3s/audio (played through same)
But there is also:
HTML5, webpages, Netflix, Amazon TV, Flash players, silverlight, etc. etc.
Hence why windows needs an option at the level of windows audio decoder to better control channel outputs over LPCM-HDMI! Either Mirroring L/R outputs to rear/side speakers, or, formal upmixing algorithms like Dolby Pro Logic etc., applied before
outputting over HDMI (Note I am NOT talking about bitstreaming!)
This is a trivial problem using WASAPI or ASIO. Why has windows audio not been properly updated since Windows XP!!
Recently, HTPCs and Media Centers are becoming many households primary source of entertainment.
Examples of some issues:
1) With no bitstreaming at all:
- Configuring HDMI audio "Playback device" to 5.1/7.1, and,
- Using a software decoder/media player to decode Dolby Digital, DTS, DTS-True HD, or Dolby True HD, and sending the data in LPCM over HDMI to the receiver/soundbar
-> works totally fine for outputting 5.1/7.1 surround from those sources
-> windows (i.e. software) completely fails in any ability to upmix 2.0 stereo sources to 5.1 or 7.1, or even mirror L/R channels to rear/side L/R channel for more room filling sound. Both these options should be available - upmixing with Dolby or other
for videos and mirroring/doubling the channels for music/MP3s.
Instead, windows audio sends silent channels over LPCM/HDMI when playing a stereo source. This has the added awful effect of not even letting my receiver upmix/mirror the outputs.
Hence, we need the ability to duplicate (for audio) and upmix (for videos) the L/R channels in a stereo source to the Rear L/R and or Side L/R channels through windows audio "playback devices" configuration before outputting over HDMI-LPCM!
In the day and age of 5.1 and 7.1 speakers this seems like such a BASIC feature that is missing.Otherwise, so many of us with an HTPC in our living room as our main source of media can't play music mirrored
through all our speakers, or watch videos with upmixed audio.
HDMI is the new standard, so this should really become an option.
I've done a fair amount of research on this problem, and do not believe there is any solution short of switching to optical (which I do not want to do because it can only carry 5.1) or, buying a fancy receiver instead of a soundbar with discrete rears and
a subwoofer (which I have) to do the mirroring/upmixing for me.

[Solved] How to keep the channels of stereo audio "as is"?

I'm using a 5.1 surround sound system with ALSA/PulseAudio. I'm using HDMI to transmit to the receiver to power all speakers up. It works for movies without any issue especially after I passed "audio-channels=6" to mpv. But I notice that when I play a stereo audio, the sound comes from all speakers / channels. For example:
$ aplay -c 2 /dev/urandom
Playing raw data '/dev/urandom' : Unsigned 8 bit, Rate 8000 Hz, Stereo (but all six speakers are working)
Does PulseAudio remix the audio? It's a nice feature for minimal multimedia speakers. But for some audio, it sounds better by just using to 2 channels as it recorded, and my receiver has enough DSP stuff and audio effects to remix the audio and to use all my channels (i.e I don't want to double-remix the audio). It should use the channels as it recorded. Is there a way to keep the channels of stereo audio "as is"?
Thanks for any advice.
Last edited by biergaizi (2015-04-05 05:31:07)

The "enable-remixing" is the setting the OP is looking for. It will disable remixing completely if set to "no", with the drawback that, say, 5.1 audio won't be downmixed to stereo if one only has 2 channels.
Disabling remixing globally seems to have weird side effects, I couldn't get my front connectors working after disabling it.
What I did was splitting my 7.1 device into a 5.1 and a 2.0 virtual devices, leaving the global remixing setting at default. Then I disabled the remixing for the 5.1 virtual device, while letting it remix for the 2.0 one.
So now when I want to remix, I just select my 2.0 device, and if I don't, the 5.1 device (or rather, in my case I actually have a 5.1 and a stereo device connected). The example is on the wiki

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?
Thanks,
James.

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How do I set up stereo audio tracks as default in Premiere using the ProRes 422 codec?

Forgive me if this has been asked many times before. I have searched but can't find anything that explains it in language that doesn't require an advanced degree in computer engineering.
I am a recent convert for our beloved FCP 7. I am learning to love Premiere dearly - but the audio part of it drives me nuts.
I have exported from FCP a series of files as ProRes 422 movies with stereo audio tracks. I want to bring them into Premiere in the same way. But when I do it squashed everything into a single audio file.
This plays havoc with the panning - especially in mixes that have stereo music mixes. Apart from that it just confuses me.
Also. when I create a new project from scratch in Premiere and I select the custom ProRes 422 setting it only allows ProRes 422 mono audio. I don't see a codec for anything else (ie. stereo).
Am I missing something?
I have looked in all the preferences areas and can't find anywhere to change this. I just want to be able to import simple, basic two track audio (and have it show up the same) as I would in FCP, ProTools and the myriad other editing programs I use.
I also want to be able to set up a basic two track stereo timeline/sequence without having to reinvent the wheel.
Many thanks for any help and your patience. I am slowly tearing my hair out and spending long periods sitting in the corner hugging my knees and weeping.
My specs. Preferred editing codec: ProRes 422
Premiere pro version CS6 (6.05)
Thanks again.

Go to the Project Panel, select all clips and rightclick/modify/audio channels.
Set it to 2 tack and mono.
When you drop the clip onto the timeline the stereo will come in on two tracks.
You can also set this to default in the Preferences under Audio (before importing the clips) (Stereo set to mono).

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.

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 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

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?
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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.

Stereo Audio settings for dual thunderbolt displays?

I'm Daisychaining 2 x 27 thunderbolt displays off my macbookPro,
How do I get the one display to play the left audio channel, and the other the right channel for stereo audio on my desk?
thanks
walter

Check these
http://www.barefeats.com/quad14.html
http://docs.info.apple.com/article.html?artnum=304122
Read the about the Expansion Slot manager in Apple Help.
I have the ATI 1900 XT in slot 4 and 16x, but if barefeats is true slot 3 ans 8x is nearly as fast. It depends a lot on waht other PCI express cards you have installed and how fat you need to run these.
G5 1.8 DP ATI Radeon X800 XT Mac Edition, PB G4 400 Mac OS X (10.4.8)

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

Receiving stereo audio

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