Sharing of video between multiple applications,

Is there software that allows the sharing of the iSight cam between multiple applications at the same time.

Welcome to Apple Discussions, HappyMacste
Apple's iSight "Your camera is in use by another application" message says "iSight can be used by one application at a time."
http://b-l-a-c-k-o-p.com/CamCamX.html claims "you can use all your favorite cam applications AT THE SAME TIME."
EZ Jim
PowerBook 1.67 GHz Mac OS X (10.4.10) G5 DP 1.8 External iSight

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Question/Problem Sharing iTunes Library between multiple users

Hello all,
I have a question (potential problem) regarding sharing an iTunes Library between multiple users.
In the past, I had placed the iTunes folder in /Users/Shared, and created an alias to it in the "Music" folder of each user, and it worked fine. However, with a recent upgrade to Mac OS 10.5, only the Home user account can access the library.
I read the Apple Support Document http://support.apple.com/kb/ht1203 uner Mac OS X which specifically states *not* to move the iTunes folder, just the iTunes Media folder (which I don't have, would that be iTunes Music?).
Any recommendations? Should I delete the different alias, move the iTunes folder back to the home user, and then follow the instructions in the support document?
We're also looking to sync music purchsed on our iPod touches, as well as apps (which weren't supported in our privous Mac OS X version.
Any advice is appreiciated.

David Guay wrote:
... iTunes Media folder (which I don't have, would that be iTunes Music?).
yes.
specifically states *not* to move the iTunes folder
*do* keep the entire iTunes folder in /users/shared, however, instead of creating aliases, launch iTunes while holding the option (⌥) key, click choose library when prompted, and select the iTunes folder in /users/shared.
obviously, only one iTunes at a time can access the library !

Sharing VISA Resources With Multiple Application Instances

I have noticed a strange behavior when attempting to communicate with a
slow, single shared VISA resource (GPIB device) from multiple
stand-alone LabView 5 applications.
Initially, I developed some code which first attempts to acquire
exclusive access to the device using VISA lock with a reasonably large
timeout. After the lock is acquired, the code performs its IO, then
releases the lock.
I then wrote some wrapper code which basically tries to enter the (lock,
IO, unlock) code as fast as possible. I built a stand-alone application,
and ran 3 seperate instances. Basically, I could see that each
instance would eventually acquire a lock, perform its IO, and unlock.
However, some of the instances "starved" for access to the device,
enough so that the timeout was sometime reached (each IO would take
perhaps 2 seconds, and I set the lock timeout to say 10 seconds).
Ideally, each instance should receive the lock in the order by which the
lock was requested. It appears that VISA is doing something else.
I've verified that this issue also exists with "faster" GPIB devices
(say 200ms IO turnaround), but is less noticable because the
communications are faster.
To get around this, I wrote another application which basically acts as
a resource server. Using VI server, each instance which wants access to
the resource sends a "lock" request to the server. Specifically, the
"client" calls a re-entrant "Interface" VI via VI Server. The
"interface" VI then adds the "lock" request to the queue, and then waits
for "Notification" from the server process. The server parses the
request queue, and when the resource is available, it sends a
notification to the appropriate "interface" VI. This whole time, the
client is waiting for the interface VI to return, just like when it's
waiting for a normal lock. When the client is done with the device, it
sends an "unlock" message to the interface VI. The server then gives
the resource to the next item in the queue.
To me, this is a bit kludgey. My solution requires that this "server"
application is running at all times, and it is a bit slower than the
usual manner. Has anyone come up with a better solution?
Thanks,
Andy

My answer depends how stand alone your applications are. I don't know what happens if you have several independant executable files but the simplest solution in the development environment is to have one vi that handles all send/receive requests to the instrument. In this way, without extra overhead, you guarantee single parts of each program access too your instrument. (don't make this vi reentrant naturally)
This approach has another advantage. You separate in a better way the instrument and your aplication, so changing to another instrument is easier to do.
greetings from the Netherlands

Sharing information Instantly between multiple Local SWFs without a server

Hey there everyone, so here is my problem:
I would like to Have a string (JSON object) that is shared across X number of SWFs that are running locally on the users machine. In addition to that, I would like to 'instantly' (with in a few MS) know when said JSON object has been updated. This needs to be done _without_ a remote server, and in AS3 (duh )
What I've tried:
Shared Object - Great for storing information across multiple SWFs and have had no problems reading / writing however since it is not remote there is no event (that i know of) to listen to on SWF_A to tell me when SWF_B has changed the SO
Local Connection - this would work with the Shared Object, in place of event listeners to tell everyone else when to update. However, you cannot 'connect' to the same name more than once. Becase of this, each application would need to know the name of every other SWF that the user is currently running, and notify individually
And yes, I thought of Timers, and no, they are not the ideal /acceptable solution.
Looked for 3rd party libraries, haven't found any.
Any insight would be super useful. Thank you.
-Andrew

Yea, I thought about that also, kind of creating a stack, however there are 2 main issues with that. A timer is still implemented for the 'controlling SO' swf to check for updates, and when / where does the main SWF get created. Let's say the user has a SWF off my home page www.myexampleurl.com, one a subsequent page: www.myexampleurl.com/checkScores.php, and one in a MySpace widget (LOL myspace) www.myspace.com/myspaceIsLame then the main homepage would create this SWF, however if the user doesn't have the homepage open, where would the SWF go? This would require working out each application to determine if it has premissions to open up it's own instance of this swf to handle things.
To do it right, seems like it would take a long time, and to do it fast, seems like it would get super sloppy super fast. I do appreciate your help though!
Any other thoughts?
-Andrew

Best practice for sharing LOV's over multiple Application Definitions?

We want to define/generate (complex) LOV's in 1 place and use them in multiple sub-applications (different application definition files).
What is the best practive to accomplish this?
Frank

Frank,
Here is what you do:
- Generate the LOV the "normal" way using your first app def file
- In all other app def files, you create a "dummy" LOV group by the same name with the same items, so you can associate items with the LOV and specifiy return values
- For each "dummy" LOV group uncheck the checkboxes "Generate Pages", "Generate Page Definitions" and "Generate Controller Group". (only visible in expert mode)
- Make sure you first generate the first app def file before you run the [ages generated by other app def files.
Steven Davelaar,
JHeadstart Team.

Sharing iMail Accounts Between Multiple Computers

I have a Macbook Pro and an iMac and would like to know how to share the iMail account information between them so I do not have to setup the accounts from scratch. Does anyone know how to do this? Any help would be appreciated.

You need to have all the music stored in a shared folder.
http://support.apple.com/kb/HT1203
If you move all the files around with Win Explorer, itunes will lose the paths to the files. It might be best to move everything to the shared folder and have them start over with a blank library (new ratings, playcounts)
The last lines in that article state
+When another user of the computer has imported new music from CD, repeat steps 6 through 8 to add the music to your library.+
You might want to use a little program like "itunes folder watch" to do it automatically for you.

Sharing imported video between users on an imac, before it is a movie

We have 4 'accounts' on my iMac - one for each member of the family. I want to import raw video from my camcorder but then let more than one of us have a copy to mess around with making our own movie. Right now, all i can do is import it to my account (the administrator) and then let my son make a movie under my account. But i want him to have access to the footage on his account. The only way i have solved it so far is to re-import it, but that seems time consuming and un mac-like.

The default location is the <User>/Movies/iMovie Events/ folder, which is specific to one user.
The easiest way to allow multiple people to use it is to move it to an external drive. Do this from within iMovie.
The external drive must be formatted as Mac OS Extended (journaled). In iMovie, click View/Events By Disk. Your external drive should show up in the list. Command-Drag the Events to the external drive to move them there. All Users who can access this drive should be able to use it.

Sharing a library between multiple user accounts on the same PC

I have an XP pc setup for the kids and each has their own login so they can have their own bookmarks, shortcuts, desktop, etc. They each have an iPod and use iTunes. I want them to share the same music library so that when one downloads or rips a song, It's available to each of them. Using the default installation, it is currently not working the way I want it to. Is what I'm describing possible? If so, how do I configure it?

You need to have all the music stored in a shared folder.
http://support.apple.com/kb/HT1203
If you move all the files around with Win Explorer, itunes will lose the paths to the files. It might be best to move everything to the shared folder and have them start over with a blank library (new ratings, playcounts)
The last lines in that article state
+When another user of the computer has imported new music from CD, repeat steps 6 through 8 to add the music to your library.+
You might want to use a little program like "itunes folder watch" to do it automatically for you.

Sharing static members between Swing application and Web application

Hi,
if someone has done this please help:
I have created 3 classes:
Mainclass using JFrame which is used as host class for DBConnectionManager class,
and ConfigBean class used for storing static configuration parameters:
     static public String strUser = "";
static public String strPassword = "";
static public String strDB = "";
static public int nMaxConn = 0;
static public String strPoolName = "";
static public boolean bConnected = false;
static public int nCurrentUsers = 0;
static public DBConnectionManager manager = null;
     public DBConnectionManager getDBManager()
return this.manager;
public void setDBManager(DBConnectionManager manager)
this.manager = manager;
DBConnectionManager class uses static instance to see if this is only class created by client users.
Only static member in this class is getInstance member function for startig manager:
     static synchronized public DBConnectionManager getInstance()
if (instance == null)
instance = new DBConnectionManager();
return instance;
In Mainclass I also created non static DBConnectionManager class for manipluation with host administrator.
Then I created web application layout in Tomcat 4 and used index.jsp:
<%@ page import="java.sql.*,java.io.*" %>
<jsp:useBean id="cfgbean" class="webvobapli.ConfigBean" scope="application" />
<%!
webvobapli.DBConnectionManager db = null;
String strMessage = "";
Statement stmt1;
ResultSet rset1;
String strQuery = "select count(*) from cards";
%>
<html>
<%
     try
          db = cfgbean.getDBManager();
          if(db==null)
               strMessage = "Error";
          else
               Connection con = db.getConnection("central2");
               if(con != null)
                    stmt1 = con.createStatement();
                    rset1 = stmt1.executeQuery(strQuery);
                    rset1.next();
                    strMessage = rset1.getString(1);
               else
                    strMessage = "NULL";
     catch(Exception e)
          strMessage = e.toString();
%>
<p>Message = <%=strMessage%></p>
</html>
Question: why db = cfgbean.getDBManager(); returns null if I created instance of DBConnectionManager
class in Mainclass and assigned it to ConfigBean as static instance before running web application.
Shouldn't all java programs share static memory area?
Beast Regards
Branislav Cavlin

Question: why db = cfgbean.getDBManager(); returns null if I created >>instance of DBConnectionManager
class in Mainclass and assigned it to ConfigBean as static instance >>before running web application.
Shouldn't all java programs share static memory area?You say you create the db objects BEFORE you run the web application - now I could be misunderstanding what you are saying, but does this not involve two JVM's (one to create initial db objects, which then exits, then second JVM fires you app server/servlet container) - which would explain why a null object is being returned.

Sharing Music Playlists between multiple Itunes ID's

Hi there
As I was the first member of our family to get an Ipod, the Apple & Itunes ID has always been mine. When my daughter got her Ipod, she just logged on using my apple credentials and the playlists were obviously available. With my wife and daughter now moving onto Iphones, they have set up their devices using new Apple ID's and Itunes ID's, and I just wondered if it's possible that I can still share my playlists?
Obviously we don't want to purchase music twice etc, but all 3 of us require the unique id's for Facetime etc
Can anyone help, I can't seem to find a solution to what I hoped was an easy question

To copy music between two computers follow these instructions.
http://docs.info.apple.com/article.html?artnum=93063
To copy playlists works similar:
On Computer #A select the playlist you want to transfer
From iTunes Menu - File select "Export Song List ..."
Transfer the resulting xml file
On the target computer from iTunes Menu - File select "Import" and select the above mentioned xml file

Sharing iOS updates between multiple Macs on same home network

Good morning -
Does anyone know if it it's possible to share the iOS update file from one Mac to another? I downloaded iOS 4.3.1 for my iPhone 4 this morning, but if I can avoid having to download it all over again on my wife's Mac for her iPhone, that would be great! If the file is in the Finder somewhere, I would think I could move it over using File Sharing...
Thanks for any help!

there is no problem doing that on a windows machine on a windows machine you just press shift and restore in itunes and point to the downlloaded firmware file

Switching between multiple tabs?

I am currently running Safari 3.2.1, haven't updated to 4 yet...Does anyone know a keyboard shortcut to switch between multiple tabs? Like you can "command+tab" to switch between multiple applications...If I have 2,3,4, etc tabs open in a single window, is there a command to switch between those multiple tabs without using my mouse???

Simpatico wrote:
it´s such a pity that Safari cannot abide by industry practice (IE, Chrome, Firefox) some command key + no of tab, instead of associating that to bookmarks.
What happens after 9 tabs? I regularly have 15+ open.

Any improvements in sharing an iPhoto Library between multiple users?

It is possible and Apple Approved to share an iPhoto Library between multiple users, but the Library must be stored on a drive or disk image that ignores permissions:
http://tech.kateva.org/2008/10/apple-supports-multi-user-iphoto.html
This doesn't work for me. Has Apple changed anything with iLife '09 to make it easier to share a Library? For example, have they changed from the prior Package format?
Message was edited by: jfaughnan

Alternatives to a trip to the Terminal:
If you want the other user to be able to see the pics, but not add to, change or alter your library, then enable Sharing in your iPhoto (Preferences -> Sharing), leave iPhoto running and use Fast User Switching to open the other account. In that account, enable 'Look For Shared Libraries'. Your Library will appear in the other source pane.
Any user can drag a pic from the Shared Library to their own in the iPhoto Window.
Remember iPhoto must be running in both accounts for this to work.
If you want the other user to have the same access to the library as you: to be able to add, edit, organise, keyword etc. The problem here is that OS X works very hard to keep your data safe and secure from the other users. You're trying to beat what's built in to the system. So, to beat the system
Quit iPhoto in both accounts
Move the iPhoto Library Folder to an external HD set to ignore permissions. You could also use a Disk Image or even partition your Hard Disk.
In each account in turn: Hold down the option (or alt) key and launch iPhoto. From the resulting dialogue, select 'Choose Library' and navigate to the new library location. From that point on, this will be the default library location. Both accounts will have full access to the library, in fact, both accounts will 'own' it.
However, there is a catch with this system and it is a significant one. iPhoto is not a multi-user app., it does not have the code to negotiate two users simultaneously writing to the database, and trying will cause db corruption. So only one user at a time, and back up, back up back up.
Lastly: This method seems a little clunky at first, but works very well. Most importantly, it uses the System to do the job for you.
Create a new Account on your Mac, call it Media. Create an iPhoto Library there. (BTW: This will work for iTunes too.)
Enable Sharing on the Library:(Preferences -> Sharing), leave iPhoto running and use Fast User Switching to open the other accounts. In those accounts, enable 'Look For Shared Libraries'. The Library will appear in the other source pane.
This means that both users will be able to see the pics. If you want to use a pic then simply drag it from the shared Library to your own in the iPhoto Window. This means that each user can have their own edits.
If you want to add photos to the Library: Log into the Media account for that purpose.
To make it all seamless: Set your Mac to log into the Media Account automatically. Set iPhoto to launch on log-in. Then switch to your own account using Fast User Switching.
Net result: a Library that's permanently available to all users but also protected. Each user can have their own versions of the pics if they want.
No partitioning, no permissions issues. Uses no extra disk space. What's not to like?
Regards
TD

Using home sharing, can you sync libraries between multiple users in a household?

Using home sharing, can you sync libraries between multiple users in a household?

Hey lindsay146,
Home Sharing lets you to stream or transfer music, movies, and more with up to five authorized computers in your household. You can learn more about it in this link:
Understanding Home Sharing
http://support.apple.com/kb/HT3819
Welcome to Apple Support Communities!
All the best,
Delgadoh

Sharing photos between multiple users on one Mac

I'm trying to figure out how to easily share photos imported in by one user to other users in my family on my mac. I'm assuming we don't have to import them multiple times. It seems cumbersome to this new mac user to share them. I find the issue with iTunes. Any help?

HI Darien,
Here are all the links I have for the different kinds of sharing:
SHARING IPHOTO LIBRARIES
Sharing libraries between users on the same local network
You can also share a library on the same machine between users the same way.
Sharing libraries between users on the same machine...
-both users must have sharing enabled in their iPhoto Preferences
-both users must be logged in and have iPhoto running
-Remember that you can only view the other library. You can't edit the photos or play the saved slideshows or view the made books or burn them to CD or DVD. The books and slideshows will show up as an album. You can play that album as an "on the fly" slideshow. You can drag images from the sharing library to your library in the source column to import them to your library. You can then edit, add to albums, books, slideshow, etc.
Sharing links from Apple....
Sharing your photos between computers
About shared photos
Turning off photo sharing
Looking for shared photos
SHARING ONE IPHOTO LIBRARY BETWEEN USERS ON SAME MACHINE
You can try one of these three methods:
1- Use iPhoto Library Manager-the paid version
The documentation page will give instructions on how it is done.
2- Sharing one iPhoto library between several users on one machine
3- Share an iPhoto Library in tiger Using ACL's
4- I have also read about ShareAlike
There is no other info on the site about how it works.
I strongly urge anyone wanting to try any of the methods for sharing one iPhoto Library folder among more than one user to backup all iPhoto Library folders before attemptin anything.

Sharing of video between multiple applications,

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