[gst-devel] How to create a IPLImage

[Carlos Castro]

Hi Lubiao,

Thank you for your reply. I didn't know about the MultiFileSink, but I
think I can work with that.
But what I would really like, is to access the buffers that hold the
current frame data:

gst-launch videotestsrc num-buffers=100 ! \
  video/x-raw-yuv,format=\(I420\),width=320,height=240 ! \
  multifilesink

( I'm working in C language using the gstreamer0.10 API.)
In this example, if I translate the pipeline to implement in my C
code, how can I access this buffers? I don't know how to link them in
the pipeline, so I can use them.

Thanks,
Carlos Castro

2010/4/9 lubiao <lubiao.py at gmail.com>:
> On Fri, Apr 9, 2010 at 4:30 PM, Carlos Castro <carloscastro7 at gmail.com> wrote:
>> Hi everyone,
>>
>> I'm trying to get a snapshot from a webcam that is continuously
>> sending the picture to a GTK+ app using a gtreamer pipeline, so I can
>> save that snapshot as a IPLImage, to later use it with OpenCV.
>>
>> I searched the web to find the answer and I found that I could use a
>> gstbuffer to store the frame that gstreamer grabs from the v4l2src,
>> but I couldn't get it to work...  How do I get the data from the
>> pipeline to the buffer?
>>
>> Thanks,
>> Carlos Castro
>>
> snapshot  example
>
> gst-launch uridecodebin uri=file:///path/to/some/file ! \
>  ffmpegcolorspace ! videoscale !
>  pngenc snapshot=false ! multifilesink location=output-%05d.png
>
> http://www.gstreamer.net/wiki/MultiFileSink
>
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-- 
Cumprimentos,
Carlos Castro