video4linux support in jmf

[Jonathan Morace]

I have not been able to find much documentation on the linux jmf
implementation, especially on video4linux support in jmf.  I have a
Hauppauge WinTV (bt878) tv tuner card and it appears to be recognized as a
capture device in jmstudio.  When I capture there is no picture, only blue
screen.  I am curious whether others have been able to capture from v4l
devices using jmf, and if anyone has any hints or knows where I can find
documentation on the subject.

Thanks for the help,

Jonathan


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Re: video4linux support in jmf

[Jonathan Morace]

>Jonathan Morace <[EMAIL PROTECTED]> writes:
>
>> I have not been able to find much documentation on the linux jmf
>> implementation, especially on video4linux support in jmf.  I have a
>> Hauppauge WinTV (bt878) tv tuner card and it appears to be recognized as a
>> capture device in jmstudio.  When I capture there is no picture, only blue
>> screen.  I am curious whether others have been able to capture from v4l
>> devices using jmf, and if anyone has any hints or knows where I can find
>> documentation on the subject.
>>
>> Thanks for the help,
>>
>> Jonathan
>
>

On 17 Dec 2001, Viktor Sigurd Wold Eide wrote:

>Does the card have several input ports? My guess is that JMF tries to
>capture from one of the ports which is not in use (composite) while
>the signal is on the TV/antenna port.


I have been using several other tools (haven't tried vic) to record video
streams from the card, and setting the source with v4lctl.  Before using
jmstudio I captured a short clip just to make sure everything was
configured properly.  Is it possible that jmf/jmstudio would change any of
the settings like video source?

Thanks,

Jonathan


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RE: [blackdown1.3.1] segmentation fault using green threads

[???]

Thanks for your advice.
But I don't know why and how I update the my libraries.

-
My OS: linux 2.4.1-rmk2-np1
My libraries:
sh-2.04# ldconfig -v
ldconfig: Path `/lib' given more than once
ldconfig: Path `/usr/lib' given more than once
/lib:
libnsl.so.1 -> libnsl-2.2.3.so
libBrokenLocale.so.1 -> libBrokenLocale-2.2.3.so
libpthread.so.0 -> libpthread-0.9.so
libdl.so.2 -> libdl-2.2.3.so
libm.so.6 -> libm-2.2.3.so
libncurses.so.5 -> libncurses.so.5.2
libutil.so.1 -> libutil-2.2.3.so
libnss_files.so.2 -> libnss_files-2.2.3.so
libcrypt.so.1 -> libcrypt-2.2.3.so
ld-linux.so.2 -> ld-2.2.3.so
libc.so.6 -> libc-2.2.3.so
/usr/lib:
libz.so.1 -> libz.so.1.1.3
-

Hope your advices..
-Original Message-
From: Hong Zhou [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 18, 2001 2:31 AM
To: A6<10G
Subject: Re: [blackdown1.3.1] segmentation fault using green threads


To me, green thread has less problems on Linux.  I
suspect that your computer does not support green
thread.  You could test it by simply doing:

java -green

If you get segmentation fault by executing this
command, then your OS does not support green thread. 
In such a case, you need to update your libraries.



--- A6<10G <[EMAIL PROTECTED]> wrote:
> 
>  It is first to post the message to this newsgroups.
> 
> I ported the blackdown jvm to my boards.
> 
> The system spec for my board is
> CPU:StrongArm sa1110
> Flash memory: 32 M
> RAM:32M
> 
> When I use the native thread, My java application
> works well.
> 
> shell) java -native -jar Myjar.jar 
>  
> But When I use the green thread, segmentation
> faults.
> 
> shell) java -green -jar Myjar.jar
> segmentation fault.
> 
> I heard that this problem may happen because of
> stack size.
> So according to the advice, limit the stack size to
> 2048(2M)
> That is , in linux
> 
> shell)ulimit -s 2048
> 
> but I didn't solve my problme.
> 
> I hope your advice.
>
>
=
>
>SunGun, Cho 
>  Team Of Media Tech
>  My Duties :
> Edispenser
>  TEL:82-2-3461-4976
> #232
>  
> H.P:82-017-763-1201
>  - AIM SYSTEMS, INC
> -
> 
>
=
> 
>  
> N
I@R
>

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