On Monday, April 18, 2016 1:05:32 AM CEST, Dan Dennedy wrote:
>
>
> On Sun, Apr 17, 2016 at 3:53 PM Jean-Baptiste Mardelle 
> <j...@kdenlive.org> wrote:
> On Sunday, April 17, 2016 2:26:02 AM CEST, Dan Dennedy wrote:
>
>
>> Do you know about the facedetect and facebl0r filters in
>> frei0r? motion_est supplies data to other filters. Why doesn't
>> this one do that? I do not really care, and I have not looked at
>> it yet - not very motivated lately - just throwing out obvious
>> thoughts. I thought you might want to apply tracking to a mask
>> or to animate another filter's position, etc. Go ahead and merge
>> it when you like so long as configure and licensing are OK.
>
> Hi,
>
> Thanks for the review.
> I know the facedetect and facebl0r filters, but they give really bad and
> random results, which made them unusable for me when I tried them. Maybe I
> didn't spend enough time to configure them...
>
> The motion_est filter does set some properties on the frame for other
> filters. But it doesn't seem very standard. Another possibility would be to
> copy the region_filter, but not sure I have time for this in the near
> future.
>
> I made the changes you suggested and uploaded a few video demos of the
> filter in action if you want to see what it can do:
>
> http://j-b-m.ch/videos/
>
> For the last one, does Kdenlive read the results property and 
> build an animation from it?

Yes. We read the "results" property of the filter, which is an animated 
rect property, and then we have an import keyframe feature that allows to 
pass the top left coordinated to an affine transition applied on the text.

>> I will play a little more with this filter in Kdenlive to make sure
> everything works and will then prepare a merge to MLT (I will let you know
> when I think it's ready).
>
> Thanks,
>
> jb
>
>
> It is time for the new release you requested. Should it wait 
> for this addition? I don't want to give you any time pressure. 
> It is really up to you and your schedule for Kdenlive.

No, please prepare the release. It is much more important that user get the 
fix for the titler crash. This OpenCV stuff is more likely targeted for the 
16.08 release.


> Also,
> https://github.com/j-b-m/mlt/blob/opencv/src/modules/opencv/filter_tracker.yml#L14
> "notes:" should be "notes: >"

Ok, will fix.

regards
jb



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