Quantcast Avisynth: Way to Measure Filter Speed? - digitalFAQ.com Forums [Archives]
  #1  
04-04-2006, 11:18 PM
supermule supermule is offline
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How can you compare and measure filter speeds.

I want to evaluate and measure the speed at which these filter process video's (although I know its very subjective to the source).

Lremovedust_YV12()
Degrainmedian()
STMedianfilter()
Convolutions3d() ----YV12
Hqdn3D()
removegrain()

At their default values, for subtle grain removal and for speed. If someone has already done similar comparison/knows of it, please direct me to the thread.
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Someday, 12:01 PM
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  #2  
04-04-2006, 11:27 PM
fabrice fabrice is offline
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Hi,

it's quite easy: just make an avisynth script with each filter, and see how many time HC last encoding a quite small clip (using slicer to extract a representative clip of a movie, for example).

With slicer, you should get differents kind of scene, and if you're not using others programs meanwhile, you will have a quite good speed comparison.

Fabrice
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  #3  
04-05-2006, 12:21 AM
Boulder Boulder is offline
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There's kassandro's AVSTimer, www.avstimer.de.tf
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  #4  
04-05-2006, 01:49 AM
supermule supermule is offline
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Quote:
Originally Posted by Boulder
There's kassandro's AVSTimer, www.avstimer.de.tf
Thats what I was looking for but by the time I read your post I had almost finished my real world test (using a small clip). Will post back the results in few minutes.
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04-05-2006, 01:57 AM
supermule supermule is offline
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So here are the results :

2894 frames - HCEnc 0.17, 2-pass, Normal Q

No filter - 3:03 - 58922KB
removegrain(mode=2) - 3:15 - 58925KB
Removegrain(mode=2).STMedianfilter(3,3,1,1) - 3:44 - 58914KB
STMedianfilter(3,3,1,1) - 3:50 - 58924KB
Lremovedust(17,1) - 3:51 - 58949KB
DeGrainMedian(limitY=5,limitUV=5,mode=3) - 4:00 - 58926KB
hqdn3d(3,2,4,4.5) - 4:25 - 58923KB
Convolution3d(preset="movieHQ") - 4:34 - 58914KB

Have included the file size just in case ppl were interested in the compression levels also.
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  #6  
04-05-2006, 01:59 AM
Boulder Boulder is offline
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Uhm, the compression cannot be measured as you did a 2-pass encode
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  #7  
04-05-2006, 02:07 AM
supermule supermule is offline
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Quote:
Originally Posted by Boulder
Uhm, the compression cannot be measured as you did a 2-pass encode
thats why I said, i am using real world environment
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04-05-2006, 02:09 AM
Boulder Boulder is offline
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But you cannot discuss compression levels if you use a 2-pass encode. The avg bitrate will always be nearly (if not completely) the same in every encode no matter what filter you use. If you want to measure compression at the same time as the performance of the filter, you need to use the CQ mode in HC.
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  #9  
04-05-2006, 04:25 AM
supermule supermule is offline
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Quote:
Originally Posted by Boulder
But you cannot discuss compression levels if you use a 2-pass encode. The avg bitrate will always be nearly (if not completely) the same in every encode no matter what filter you use. If you want to measure compression at the same time as the performance of the filter, you need to use the CQ mode in HC.
Ok, got that!!!
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