Slow motion and speed changes blurry jittery - SOLUTION!

I Have had a few issues with slo mo and sped up stuff going blurry or jittery on me.
This is from HD from a HC3 down converted (camera does this) to SD anamorphic (pal).
I think i have found the solution - and welcome any exra content from more experienced heads than mine.
Of course there are limitations to how far you can slo mo before you get the jitters - anyway- here is my hot tip!
Change your speed (fit to fill , or modify speed) of the clip in the canvas (leaners - watch your sound timing - it can be thrown off if you have locked off ausio tracks) open up your clip from the canvas by double cliking it, tap the motion tab, cross the motion blur box - adjust the sample setting from 4 to 32 (i dont know exactly what this does but this is the key!, drop motion blur down to 0 %.
RENDER! voila! This has quickly resulted in some speed changed clips that hold their form rather nicely (no blurring or strobing , jitters etc - that have plagued me in the past - i'm doing lots of sport stuff where speed changes are common)
Hope this helps other relative newbs out there! And if anyone would care to comment on why this works i would be all ears!

I know what you mean, I end up with an extra frame if I set an in and out point then insert/overwrite replace or superimpose.
I find the quickest work flow is to
0. mark the in point at start of clip
1. copy the clip, command c
2. go to the end of the sequence, end
3. paste clip
4. change speed, look at duration of clip, change speed %, command j
5. change duration back to original duration,
6. cut clip from end of time line,
7. return to in point and paste clip.
I find this does give me control over the clip, does not affect the timeline and is frame accurate.
I agree you should be able to change the clip speed without affecting the duration.
The alternative is as Andy described, fit to fill, here is an alternitive way of doing/describing this process;
adjust the out point of the clip to the new point you want,
move the clip out of the space on the timeline where you want the clip with the speed change to go,
place the CTI in the space where you want the new clip to go,
double click on the clip you want to adjust, opening it in the viewer,
drag the clip from the viewer to the canvas and the fit to fill option will appear along with all of the other options,
this will also do what you want, I believe there is no one click solution.
Someone please prove me wrong! I would love to be able to "command j" in to the speed dialog box, click on a check box that says keep duration or in/out points and simply change the duration.
Tony

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Solved!
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That seems odd, try this
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"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

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Message was edited by: Meg The Dog to fix typo

Slow motion and speed changes blurry jittery - SOLUTION!

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