how to test quicktime's avc decoder speed

[bond]

as i am planning to update my avc decoder comparison soon i wondered how to best measure the speed of the quicktime avc decoder

i have thought about four different methods:
1) decoding via the avisynth quicktime wrapper plugin (http://forum.doom9.org/showthread.php?t=104293)from tateu and measuring the video speed via directshow in elecards chegepuga or haalis timecodec
2) the directshow quicktime wrapper filter from cyberlink (+ elecard/haali
3) the directshow quicktime wrapper filter from intervideo (+elecard/haali)
4) the VFAPI quicktime wrapper plugin via avisynth and directshow (+ elecard/haali)

some first results on a quicktime created avc mp4 (25fps) were:
intervideo (yuy2 output): 19.93fps
tateu (yuy2): 19.60fps
cyberlink (rgb24): 18.60fps
vfapi (rgb24): 15.72fps

now those values are so crappy i wonder if they are meaningful? obviously i deactivated "use clock" in graphedit to make sure the decoder decodes as fast as possible

any other idea how to measure quicktime's speed so its comparable to the maximum decoding speeds of other avc decoders?

[xie_yg2000]

i think your method seems ok.
BTW, do you have a way to test the speed of nero decoder?
i can playback h264/avc file in NeroShowTime, but the decoder filter can not be loaded by graphedit.