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Hi,
I’ve setup a pipeline with two bins attached to a tee. The first bin
is simply for display (queue –> DirectDraw). The second bin has a
pipeline appropriate for writing a PNG (using pngenc), followed by a
multifilesink.
My idea was that I could perhaps set some properties on the PNG element, or
the file sink, to tell it to just capture 1 image, or capture 10 images at 1/25
(or whatever) and those images would then appear in the given directory.
For the single image case, I set snapshot to true on the pngenc. This
correctly took one image but it then managed to set the entire pipeline into an
EOS state. When I’m done, I unlink the pngend bin off the tee of course,
but when I reattach it to take another snapshot, it doesn’t work (not the
reattachment, the capture). Debug output shows a whole load of QOS
(quality of service), obviously because it’s all too slow with debug on (set to
level 3). I see no errors setting state to Playing though.
All in all I’m a little confused about how to do this. If anyone has
any advice I would really appreciate it.
Here’s a kind-of overview of my pipeline:
-> (pipeline)
UDPSource,
Queue,
RTPDepay,
Mpeg4Decoder,
VideoRate,
Tee
-> (bin 1, off Tee)
Queue,
ColourSpaceConvert,
DirectDrawSink
-> (bin 2, off Tee)
Queue,
ColourSpaceConvert,
VideoRate,
CapsFilter,
ColourSpace2,
PNGEnc,
MultiFileSink
Thanks.
Robin
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