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QTJava and video problems [message #659402] Sun, 13 March 2011 16:15 Go to next message
jlrouth is currently offline jlrouthFriend
Messages: 5
Registered: March 2011
Junior Member
I've been using Eclipse to work on Processing projects for a while, and there haven't been any real hurdles so far.

I'm now trying to add some video, but can't get QTJava to work. I've explored around forums extensively, but no one seems to have found the solution.

My current error is: java.lang.UnsatisfiedLinkError: quicktime.jdirect.JDirectLinker.loadNativeLibrary(Ljava/lang /String;)I

Having tried modifying all manner of environmental variables and Eclipse settings, I then used Dependency Walker to trace what the issue is, and it seems to be around QTJava.dll only being available for x86, whereas the rest of the project, and my machine, are x64.

I don't imagine I'm the first to encounter this, but I can't see any download for a 64 bit version of QTJava.


Anything that could point me in the right direction would be hugely appreciated.
Re: QTJava and video problems [message #659406 is a reply to message #659402] Sun, 13 March 2011 16:30 Go to previous messageGo to next message
Ed Merks is currently offline Ed MerksFriend
Messages: 33113
Registered: July 2009
Senior Member
I don't know much about this, but if you want a 64 bit version QTJava,
you're best to ask the providers of that library for such a thing. I
think your x64 machine can run x86 code, so you might want to
target/develop for that instead.


jlrouth@hotmail.com wrote:
> I've been using Eclipse to work on Processing projects for a while,
> and there haven't been any real hurdles so far.
> I'm now trying to add some video, but can't get QTJava to work. I've
> explored around forums extensively, but no one seems to have found the
> solution.
>
> My current error is: java.lang.UnsatisfiedLinkError:
> quicktime.jdirect.JDirectLinker.loadNativeLibrary(Ljava/lang /String;)I
>
> Having tried modifying all manner of environmental variables and
> Eclipse settings, I then used Dependency Walker to trace what the
> issue is, and it seems to be around QTJava.dll only being available
> for x86, whereas the rest of the project, and my machine, are x64.
>
> I don't imagine I'm the first to encounter this, but I can't see any
> download for a 64 bit version of QTJava.
>
>
> Anything that could point me in the right direction would be hugely
> appreciated.


Ed Merks
Professional Support: https://www.macromodeling.com/
Re: QTJava and video problems [message #659407 is a reply to message #659406] Sun, 13 March 2011 17:16 Go to previous messageGo to next message
jlrouth is currently offline jlrouthFriend
Messages: 5
Registered: March 2011
Junior Member
Thanks for your reply. There may now follow a question exposing my total lack of experience with these matters:


My understanding is that all the DLLs etc that I'm running are at 64bit (because my OS is). Whilst I don't imagine you can turn 32 bit into 64 bit, presumably there's some way to do it the other way round.

Do you know how I would get Eclipse to target/develop for 32 bit code, even though my set up is for 64 bit?

If it makes any difference, I'm on Windows 7.

Thanks again.
Re: QTJava and video problems [message #659413 is a reply to message #659407] Sun, 13 March 2011 18:01 Go to previous messageGo to next message
Ed Merks is currently offline Ed MerksFriend
Messages: 33113
Registered: July 2009
Senior Member
I'm not really sure either. I think you can get a 32 bit or/and a 64
bit JDK/JRE and that your IDE, regardless of whether it's running 32/64
bit, can target whatever JRE you tell it to use. So if you only have
the 32 bit dll you probably need a 32 bit JDK/JRE. Of course I'm
totally guessing. Maybe someone with more expertise in this will
elaborate further, or you could try a 32 bit JDK/JRE and let us know if
it worked out...


jlrouth@hotmail.com wrote:
> Thanks for your reply. There may now follow a question exposing my
> total lack of experience with these matters:
>
>
> My understanding is that all the DLLs etc that I'm running are at
> 64bit (because my OS is). Whilst I don't imagine you can turn 32 bit
> into 64 bit, presumably there's some way to do it the other way round.
>
> Do you know how I would get Eclipse to target/develop for 32 bit code,
> even though my set up is for 64 bit?
> If it makes any difference, I'm on Windows 7.
>
> Thanks again.


Ed Merks
Professional Support: https://www.macromodeling.com/
Re: QTJava and video problems [message #659613 is a reply to message #659413] Mon, 14 March 2011 19:41 Go to previous messageGo to next message
jlrouth is currently offline jlrouthFriend
Messages: 5
Registered: March 2011
Junior Member
Ok - thanks for your help. I'll let you know if I find anything,
Re: QTJava and video problems [message #660650 is a reply to message #659613] Sun, 20 March 2011 16:56 Go to previous message
jlrouth is currently offline jlrouthFriend
Messages: 5
Registered: March 2011
Junior Member
I've fixed it for now by downgrading Eclipse to the 32bit version.
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