Importing only one channel of audio from two-channel video

I'm diving back into iMovie 6 after a long hiatus, so forgive me if this is a dumb question, but my search hasn't turned up an answer. I have two channels of audio on the video I'm importing. Is it possible to split the two channels in iMovie once the video is imported, or do I have to figure out how to have the video camera feed only the audio channel I want to import? Thanks!

You have to figure out how to have the video camera feed only the audio channel I want to import!

Similar Messages

How get one channel of data from two-channel audio file?

I need to either convert a 2-channel audio file to 1-channel or else get just one channel of data (does this lose some sound?) for a calculation. How would I do that?

In terms of a loop over byte[] data, double[] left, double[] right...
8-bit mono
for (int i = 0; i < data.length; i += 1) {
left[i] = (double)data;
16-bit monofor (int i = 0; (i*2) < data.length; i++) {
left[i] = ((double)data[2*i] << 8) + (double)data[(2*i)+1]);
8-bit stereofor (int i = 0; (i*2) < data.length; i++) {
left[i] = (double)data[2*i];
right[i] = (double)data[(2*i)+1];
16-bit stereofor (int i = 0; (i*4) < data.length; i++) {
left[i] = ((double)data[2*i] << 8) + (double)data[(2*i)+1]);
right[i] = ((double)data[(2*i)+2] << 8) + (double)data[(2*i)+3]);

How to calculate the phase difference between two square wave (acquired from two channel in one DAQ)

Hello everyone ,
I need a quickly help that as below :
I am trying use PCI-6220 to acquired six signals from one rotation encoder (channel A, channel B,channel Z ,and their non-signals) .The encoder out signals will be square wave and 4000pulses per revolution. I set it rotation at 300rpm speed. I need show every square wave of six out channels in waveform and measure the A-B phase difference to check if the value is correct (designed value should be 90deg) .
I have no idea how to measure or calculate the phase difference of two square wave base on synchronizate to acquire these two square wave from two channel on the PCI-6620....
Anyone can give a idea how to calculate the phase difference with two square wave ?
Thank a lot and Thanks again...
Tim

Tim,
Here is a simple rising edge detector for one channel.
Lynn
Attachments:
Rising edge.vi ‏15 KB

Import only one object from transport request

Hello,
I have a transport request with some programs. I've not imported this request yet. And I would like to import only one program or just look at its source code. Is it possible with help of any standart SAP functionality?
Thank you in advance,Sergey.

Hi,
Go to SE10 and display the transports for your username. Select the task number (not transport no.) and hit display object list icon. There you will see all the objects in the task. Hit change button and you will see delete icon enabled. You may select the objects you do not want to transport and delete it from the task.
Version > 4.6C may have different screens but still the functionality is available
Raj
Reward points if helpful

Can users have one iTunes library deriving from two drives?

Hi everyone,
I keep my 4 & 5 star songs on my C drive and the rest (all stars, 1,2 3, etc.) on my exhternal hard drive.
Whenever I want to listen to my music, all I can readily play are the tunes on my C drive.
I'm guessing the issues having one library for tunes stored on separate drives is insurmountable?
I say that because I'm guessing that my iPod (4th gen) is only capable of importing from one library?
I think the biggest issue is either I don't know how to (or maybe users can't) list a second drive so that iTunes can load all songs from both drives whenever I do have the second drive up and running.
Adding to the second drive library issue, I can't figure out how to permanently tag my external HD's (I've got 6) so that their drive letter is not automatically defaulting to their order of prescence.
I can deal with that issue by simply not opening iTunes while I the second drive has been assigned a drive letter other than what iTunes (hopefully) is set to (i.e.; hopefully C and F drives).
But can users have one iTunes library deriving from two drives?

Seems I've over come what is something I'd hoped/expected iTunes would be capable of (ie; reinitiating the pathway for external HD music files when their drive letter is the only thing that changed).
I tried the obvious by going to iTunes's Edit>Preferences>Advanced and clicking the change button for "iTunes Music folder location", then entered the current drive and pathway (as the drive is currently assigned, F as opposed to the original G) and of course iTunes still couldn;t find the missing tunes.
Giving up on the hope that iTunes was designed smarter than it is (ie; each and every single missing tune req's manual redirection of pathway, as opposed to a preferable tick box for something like 'use the last redirected pathway').
And I finally figured out how to properly changed drive letter assignments, but still uncertasin if that means permanently tags my EHD's with that drive letter.
For that to be permanent, maybe I need to name each drive regardless that Windows already has unique inforamtion on each HD. Suppose I'll soon find out if the drive at this point has fianlly stored its drive name and whether or not Windows will contiue to change the EHD drive letters simply by the order which I am introducing them to the os.
No real luck with rats nest USB hubs as they crash my os alot, so I'm left to trying to find an easy way of managing the EHD drive assignments. THe following is the closest I've yet to come to doing that:
Click Start>Control Panel>Administrative Tools>Computer Management, and then in the left pane, under Storage, click Disk Management.
Right-click the drive, partition, logical drive, or volume for which you want to assign a drive letter, and then click Change Drive Letter and Paths.
Click Change.
Click Assign the following drive letter (if it is not already selected), click the drive letter that you want to use, and then click OK.
Click Yes when you are prompted to confirm the drive letter change.
Again, too bad iTunes doesn't afford a 'find' feature for 'missing' files such that one might be afforded a tick box for 'do not prompt again, instead use the last indicated location for "iTunes Music" folder as the base storage location'.
This drive renaming thing is a real hassle. Not like somebody couldn't have guessed it and Windows and/or iTunes can't afford some script, etc. to better manage 'tagging' EHD's and/or re-locating 'missing' tunes.
But then what would we have to complain about, not that they listen anyway.

SaveToFile example modification to get data from two channels simultaneously.

We are trying to modify the “SaveToFile” example for C++. This particular example comes with NI-scope 2.9.1 and some other versions. This example collects data from one channel and saves the output as a text file. Also, we are using NI PCI-5112 DAQ.
However, it can be modified to get data from channel 0 and channel 1 at the same time. There is a help file called “Fetching Multiple-Record Acquisitions”, which is under the NI-High speed digitizer help topics. This confirms that you can modify the code to get data from two channels and the output will be a text file where every other value is from one channel. This help file also gives some code. However, it is not very much helpful to us, please keep in mind that we have only taken a basic course in C++.
Our project is to analyze the data, however, we need to acquire the data before we can analyze. We have spent so much time trying to get the data. What we need to do is get data from both channels simultaneously and output the data as a text file.
Can anyone help us to modify the code so it can get data from both channels simultaneously? Or can anyone help as where we can get more information? Or does anyone know of any sample examples that will take data from two channels simultaneously and output the data as a text file or any other type of document.
Any help will be really appreciated, as we have spent so much time trying to acquire the data.
Thanks.

Hi Finomad,
Please see this post for an answer to your question.
Regards,
Natasa

How to modify the VB examples in ni-scope to sample data simultaneously from two channels in PCI 5922?

Dear all:
I want to write VB programs to sample data simultaneously from two channels in PCI 5922. The niscope driver has some example VB programs to sample data from one channel, for example, the "save to file ", the program works well to sample the data from one channel. When I modify it to sample data simultaneously from two channels, I always get error so I seek your help on how to write the program to sample two channels simulatenously. Thanks. I attached the sample program here and what I tried to modify is the "channel name" and "waveform()"
Regards
Andy
Attachments:
savetofile.doc ‏42 KB

Hi Bajaf, regarding the FFT of the four channels, the next link might be what your looking for:
http://digital.ni.com/public.nsf/allkb/862567530005f09c8625671b00739970
Respect the phase issue how are you doing the acquisition of the signals, are you doing two independent acquisitions? if you are controlling them as independent acquisitions try to synchronize them with triggers and the clock.
How much are they out of phase?
By the way we know have forums in Spanish
Best Regards
Benjamin C
Senior Systems Engineer // CLA // CLED // CTD

I Want To Transmit Audio from Mic and Video from WebCam.....???????????????

I Want To Transmit Audio from Mic and Video from WebCam on Another Computer. I have used AVTransmit2.java file and AVReceive2.java file for Transmission and Receiving but They Transmit Only Video On Another Computer on a network without any error. Any One Help me How Can i Transmit both Audio & Video at the Same time ????????
i m using This Command for Transmittion
java AVTransmit2 vfw://0 192.168.0.1 192.168.0.2 10000
and this Command For Receiving
java AVReceive2 192.168.0.1/10000 192.168.0.2/ 10002

Excuse me foro my bad English but I speak English like Tarzan.
To trasmit both video and audio I created a MergingDataSource wich incorporates video and audio data sources. Then I created a Processor with this DataSource and a RTPManager for each track of the processor. It works.
Stupendoman

Add audio from 25 fps video to 23.976 fps

Hello,
I want to add audio file from 25 fps to match with another video with 23.976 fps using Audition. How can i do that ?!
25 fps video settings:
General
Complete name                            : 01.avi
Format                                   : AVI
Format/Info                              : Audio Video Interleave
File size                                : 170 MiB
Duration                                 : 20mn 28s
Overall bit rate                         : 1 161 Kbps
Writing application                      : VirtualDubMod 1.5.10.2 (build 2540/release)
Writing library                          : VirtualDub build 24415/release
Video
ID                                       : 0
Format                                   : MPEG-4 Visual
Format settings, BVOP                    : 1
Format settings, QPel                    : No
Format settings, GMC                     : No warppoints
Format settings, Matrix                  : Default (H.263)
Muxing mode                              : Packed bitstream
Codec ID                                 : DX50
Codec ID/Hint                            : DivX 5
Duration                                 : 20mn 28s
Bit rate                                 : 1 039 Kbps
Width                                    : 640 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 25.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.135
Stream size                              : 152 MiB (90%)
Writing library                          : DivX 6.7.0 (UTC 2007-09-20)
Audio
ID                                       : 1
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 3
Mode                                     : Joint stereo
Mode extension                           : MS Stereo
Codec ID                                 : 55
Codec ID/Hint                            : MP3
Duration                                 : 20mn 27s
Bit rate mode                            : Constant
Bit rate                                 : 112 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 44.1 KHz
Compression mode                         : Lossy
Delay relative to video                  : 22ms
Stream size                              : 16.4 MiB (10%)
Alignment                                : Split accross interleaves
Interleave, duration                     : 40 ms (1.00 video frame)
Interleave, preload duration             : 500 ms
23.976 fps video settings:
General
Complete name                            : new_01.avi
Format                                   : AVI
Format/Info                              : Audio Video Interleave
File size                                : 557 MiB
Duration                                 : 24mn 7s
Overall bit rate                         : 3 228 Kbps
Writing library                          : VirtualDub build 32842/release
Video
ID                                       : 0
Format                                   : MPEG-4 Visual
Format profile                           : Advanced Simple@L5
Format settings, BVOP                    : 2
Format settings, QPel                    : No
Format settings, GMC                     : No warppoints
Format settings, Matrix                  : Default (H.263)
Muxing mode                              : Packed bitstream
Codec ID                                 : XVID
Codec ID/Hint                            : XviD
Duration                                 : 24mn 7s
Bit rate                                 : 1 807 Kbps
Width                                    : 1 024 pixels
Height                                   : 768 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 23.976 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.096
Stream size                              : 312 MiB (56%)
Writing library                          : XviD 64
Audio
ID                                       : 1
Format                                   : PCM
Format settings, Endianness              : Little
Format settings, Sign                    : Signed
Codec ID                                 : 1
Duration                                 : 24mn 7s
Bit rate mode                            : Constant
Bit rate                                 : 1 411.2 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 44.1 KHz
Bit depth                                : 16 bits
Stream size                              : 244 MiB (44%)
Alignment                                : Aligned on interleaves
Interleave, duration                     : 42 ms (1.00 video frame)
Interleave, preload duration             : 500 ms
Best Regards,

Thanks SteveG,
Ok, What about add the same audio from 25 fps video to 29.97 fps video with settings below:
General
Complete name                            : 01.wmv
Format                                   : Windows Media
File size                                : 259 MiB
Duration                                 : 24mn 8s
Overall bit rate mode                    : Constant
Overall bit rate                         : 1 501 Kbps
Maximum Overall bit rate                 : 1 507 Kbps
Encoded date                             : UTC 2007-06-25 14:54:25.750
Writing application                      : TMPGEnc 4.0 XPress Version. 4.0.3.169
Video
ID                                       : 2
Format                                   : VC-1
Format profile                           : MP@ML
Codec ID                                 : WMV3
Codec ID/Info                            : Windows Media Video 9
Codec ID/Hint                            : WMV3
Description of the codec                 : Windows Media Video 9 - Professional
Duration                                 : 24mn 8s
Bit rate mode                            : Constant
Bit rate                                 : 1 300 Kbps
Width                                    : 640 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 29.970 fps
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.141
Stream size                              : 224 MiB (87%)
Language                                 : Japanese
Audio
ID                                       : 1
Format                                   : WMA
Format version                           : Version 2
Codec ID                                 : 161
Codec ID/Info                            : Windows Media Audio
Description of the codec                 : Windows Media Audio 9.1 - 192 kbps, 48 kHz, stereo 1-pass CBR
Duration                                 : 24mn 8s
Bit rate mode                            : Constant
Bit rate                                 : 192 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Stream size                              : 33.1 MiB (13%)
Language                                 : Japanese

Audio from Flash CS3 Video overlapping

audio from Flash CS3 Video overlapping
help stopping the FLVPlayback instance (which has an instance
name of theVideo) when another button is clicked!
How do I stop flv playback when user clicks a navigation
button ...
Excuse me in advance for asking about a topic that may be
very popular!
I'm using the attached code to go from the main stage to one
subset of .swf files (loaded movies) and I apparently have no
problems with overlapping. Hell, the files even seem to unload
themselves correctly. Then, when I go to my second subset of .swf
files (with the exact same AS3 structure), which has a Flash Video
file (made by the FLV Playback component), I get into an
overlapping problem associated with the audio.
How can I stop, cancel, or unload the audio when the file is
clicked away from (the user selects another button on the main
stage)?
Code attached. Please let me know if anything else is needed.
Yours Sincerely,
Jntspecialty

I have tried to clean up code and do this right.
I need help referencing (storing the value in the variable
"stopsoundoverlapReq") the "flvplayback instance AFTER theVideo is
instantiated (ie, the frame that contains theVideo has rendered)"
correctly.
Also, now I need help with the name of my nav bar button's
method followed by parentheses, which should include the
appropriate method parameter.
On my main timeline, I tried to clean up the code and use:
var stopsoundoverlapReq:FLVPlayback =
stop("videopage.swf/MovieClip(ldr.content).theVideo");
Then for my nav bar button on this same timeline use:
any_btn.addEventListener(MouseEvent.CLICK, stopsoundoverlap);
function stopsoundoverlap(event:MouseEvent):void
stopsoundoverlap.stop(stopsoundoverlapReq);
The 3 errors I get now are :
1046: Type was not found or was not a compile-time constant:
FLVPlayback. var stopsoundoverlapReq:FLVPlayback =
stop("videopage.swf/MovieClip(ldr.content).theVideo");
1061: Call to a possibly undefined method stop through a
reference with static type Function.
stopsoundoverlap.stop(stopsoundoverlapReq);
1137: Incorrect number of arguments. Expected no more than 0.
var stopsoundoverlapReq:FLVPlayback =
stop("videopage.swf/MovieClip(ldr.content).theVideo");

How do I route audio from a YouTube video to AU Lab using SoundFlower so that I can capture the YouTube video's sound stream?

How do I route audio from a YouTube video to AU Lab using SoundFlower so that I can capture the YouTube video's sound stream?

Attach camera via USB or put card in card reader.
Go to FCP, and go to the Log and TRANSFER window.
If FCP recognizes the card, you will see your clips listed on the left.
You can view them, set Ins and Outs, and import just what you want.
Once you choose a section of video and import it, FCP converts (transcodes) from its original camera format to Apple ProRes422 - a more edit friendly video file.

How do you convert the audio from a mpeg4 video file to mp3?

How do you convert the audio from a mpeg4 video file to mp3 format?

Probably the easiest way to do this is to download a free media convertor. Most will be able to convert video into audio files.

No audio from second Channel using Webcam Capture with ASIO source

I am trialing elements version 10 as I am looking for a capture / recording / editing solution for making music videos. I want to be able to record from my webcam and also record two audio streams silmutaneously.
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So I have tried selecting the Audio device settings prior to starting a capture but each time I start a capture the audio device reverts to standard windows Realtek audio device. I then select the Line6 Device in the capture window and procede to record but I only get video and one audio channel. Is there a way to record live from webcam AND get both audio channels using ASIO driver?
Cheers
Greg

Only if your camcorder records in stereo. Otherwise, you will only get one channel of audio and you will need to use the Fill Left or Fill Right audio effect to spread the audio across both.

How do i import only part of a song from a CD

I have a CD which has a defect, by error it has two songs in a track and the second must be ignored, i want to import only the first 3:30 minutes

Well when the audio CD is loaded you can select the track in question, right-click on it, choose Get Info, and go to the Options tab. From there you can check the boxes for Start Time and Stop Time and set the values according to your needs. When you rip the track, only the portion you've specified should be saved to a file.

Multi-Channel output audio from Quick Time (or iTunes)

Hello all,
I am trying to get multi-channel AC3 audio output from QT and can only get two channel stereo. I have seen lots of related posts but can't quite get it.
I am trying to configure a Mac Mini to output properly via the TOS link port to my audio system. I get surround sound fine playing a DVD but not when playing a .m4v file that does give me surround sound when played on my Apple TV.
Should this be possible?

I appreciate the link Brent! I also had someone point me here http://fplanque.com/dev/mac/ac3-ac-3-5-1-surrond-sound-apple-mac-osx and all is good now.
Thanks!

Importing only one channel of audio from two-channel video

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