Gaussianblur causes large latency

[Edward Hervey]

Hi,

On Fri, 2014-06-20 at 01:50 -0700, landy wrote:
> 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

  All the processing is happening in one thread, which is not very
optimal.
  Put queue elements:
    * just after videotestsrc
    * just before autovideosink
    * just before gaussianblur

  That will spread out the load accross 4 threads.

    Edward

> 
> 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
> 
> 
> 
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Gaussianblur-causes-large-latency-tp4667599.html
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-- 
Edward Hervey
bilboed at bilboed.com