Gaussianblur causes large latency

[landy]

Hi all, 

I wanna to add a blur effect onto my video, but when I did it with plugin
gaussianblur, the performance turned very low. I searched a lot via google,
but no luck. 

Here is the commandlines: 

gst-launch-0.10.exe videotestsrc ! video/x-raw-yuv, framerate=25/1,
width=1024, height=768 ! ffmpegcolorspace ! gaussianblur sigma=10 !
autovideoconvert ! autovideosink

and logs: 

Setting pipeline to PAUSED ... 
Pipeline is PREROLLING ... 
Pipeline is PREROLLED ... 
Setting pipeline to PLAYING ... 
New clock: GstSystemClock 
WARNING: from element
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo:
A lot of buffers are being dropped. 
Additional debug info: 
gstbasesink.c(2873): gst_base_sink_is_too_late ():
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo: 
There may be a timestamping problem, or this computer is too slow. 
WARNING: from element
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo:
A lot of buffers are being dropped. 
Additional debug info: 
gstbasesink.c(2873): gst_base_sink_is_too_late ():
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo: 
There may be a timestamping problem, or this computer is too slow. 
WARNING: from element
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo:
A lot of buffers are being dropped. 
Additional debug info: 
gstbasesink.c(2873): gst_base_sink_is_too_late ():
/GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo: 
There may be a timestamping problem, or this computer is too slow.

The problem only occurs when the size of video is big, like 1024x768. If I
resize video to small one, for instance, 320x160, it's OK. 

I know that if I add "sync=false" to autovideosink element will solve a
little, but since i am going to play audio in the same time, so this is not
suitable to me. It will cause sync problem. 

So, guys, please give me a hand. 
Thanks a lot. 

-Landy



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