Thanks for the response, much appreciated.
Further comments inline...
--- In Avid-L2@yahoogroups.com, Frank Capria <frank@...> wrote:
>
> Answers inline...
>
> On Sat, Nov 27, 2010 at 4:57 AM, trevatpc trevatpc@... wrote:
>
> > So if you could have a 50fps project it would play at 'normal /
as-live'
> > speed
>
> You can have a 50 fps project. 720p/50
I suspect Nigel would need a 1080P/50 or 1080i/50 project
> > But in a 25fps project it'll have a 200% motion adapter applied to
make it
> > 'as-live' speed ?
>
> Correct.
> > And removing that motion adapter will give you 'half real speed /
> > slow-motion' playback?
> >
>
> You can't remove it. You can change it to play at another speed. Since
the
> sequence determines the frame rate of playback, any non-native clip
has to
> have a motion adapter applied to it - even if it is later modified to
match
> the initial frame rate (playback @ 100%).
>
My experience with editing 1080/25P material (5D imports) into a
1080/25i project is that a 100% blended interpolated effect is applied
with input progressive and output interlaced.
I *can* remove this motion adapter with 'remove effect' without
promotion to timewarp.
Nigel can promote his motion adapter to timewarp then adjust to 100%,
change interpolation etc? But not remove the timewarp?
> > But beware 'refresh motion adapters' as it'll then put the 200%
effect back
> > on?
> >
>
> Since you can't take it off, only modify it, the refresh sequence
command
> will obey the new setting. (Nothing changes.) Once you promote the
default
> adapter to a Timewarp, it won't get refreshed.
>
Refresh sequence does reapply the 100% motion adapter that I can remove
(unless promoted as you indicate).
> > Does applying a 100% motion effect to that clip (50fps in 25fps
project)
> > mean that 'refresh motion adapters' will not make any further
changes (other
> > than interlaced/progressive inputs/outputs are amended)? It
certainly
> > behaves that way with off-speed effects applied.
> >
>
> As stated above. That's exactly what happens when you modify the
initial
> adapter.
I'm still not sure what will happen here.
I'll test when next at an MC5 setup. Currently 3.5.9 / 4.0.5 are what I
most often come across.
It's a moot point if the 200% motion adapter can't be removed though.
> >
> > Frank is there any way of disabling or removing motion adapters from
a
> > sequence?
> >
>
> No. It's how Media Composer handles mixed frame rate sources in a
sequence.
>
But, as stated above, it is also how it handles mixing progressive /
interlaced sources at the same frame rate.
It could also be useful as an 'ignoreQTrate' type option when you *want*
frame for frame playback. Say if you have High-Motion files, or EVS
Super-Slow files you might want to choose your speeds.
>
> > I can see how they are useful when mixing frame rates but I don't
seen the
> > advantage of putting a 100% interlaced output motion effect on a
clip that
> > has been assigned 'progressive' in an interlaced project - it's
effectively
> > doing nothing as far as I can make out.
> >
>
> Not quite true. It's taking a full frame and using it as a single
field -
> half the resolution.
>
That would be the 'duplicated field' option, surely?
A (draw breath..) "blended interpolated-input progressive-output
interlaced motion adapter" (breathe again) appeared to do nothing to the
vertical resolution. But this was in an offline (50i material at 20:1,
25p material at Dnx36). I took the effects off anyway.
I didn't want to modify the clip settings to interlaced because the
online was to be in a 25P project (with interlaced sources captured as
25PsF via Alchemist and avoiding any motion adapters).
Motion adapters seem a very cool way of getting mixed frame rates
playing nicely. Just trying to get my head around the traps that might
be contained within it.
Sorry for the thread hijack Nige ;-)
Trevor
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