Re: [Mlt-devel] slowmotion producer bug/question

[Zachary D. <dre...@tc...>]

Jb, 


I looked at your solution again and I think it would be fine. Apparently
I can't divide fractions by fractions until I've had a little more
coffee. If charlie sees no conceptual problems with this I'll commit
your solution.

>I don't use method=1 because it crashes with following message:
>motion_interpolate: Assertion `scale >= 0.0 && scale <= 1.0' failed.
>
>  
>
Odd. I haven't touched the code in maybe a year but I don't remember
ever seeing this. I'd like to be able to reproduce it.

method=1 is more interesting than useful anyways. You can see what it
does here:

http://www.tc.umn.edu/~drew0054/slow_demo.mpg

>>To get around this in the past, I've put an initiliazation routine in
>>the filter_get_image method. For a complex example of this, look in
>>filter_motion_est.c. Instead of using a structure, you should probably
>>just use mlt properties on the producer to make sure it is only run once.
>>    
>>
>
>Ok, thanks for the hint, I will have a look at filter_motion_est.c
>  
>
It might be a little scary in there. Unless you compare it to any other
motion estimation code. Than it will look like a docile puppy.

There should probably be a simpler producer_slowmotion. The part your
using I put there for my own reference. It would probably be fairly
simple to rip all the motion_est related stuff out of it and put it into
the core modules. The only thing slightly fancy that it does is the
image buffering.

-Zach