https://bugs.kde.org/show_bug.cgi?id=357710

            Bug ID: 357710
           Summary: wipe transition use incorrect shape size when using a
                    png lumas file
           Product: kdenlive
           Version: unspecified
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Effects & Transitions
          Assignee: vpi...@kde.org
          Reporter: roberto.castagn...@gmail.com

If I use a png lumas file with a different aspect ratio than the project one,
the shape of transition is resized keeping the aspect-ratio of the png file, so
I get 2 bar on left and right of the clip where the transition is not applied.
I will attach a simple test project in dv_pal format where I have created a
black and a white clip color, starting with the balck clip and ending with the
white one. During the transition, using file radial.png found into kdenlive
package, the black clip is resized leaving 2 white bars on left and right.
If I convert the file to pgm format:
   convert -strip radial.png radial.pgm
the transition covers all the clip size as expected
(I have to use -strip option to strip comment, or the transition doesn't work:
maybe I shall open an other bug for this?)

Furthermore, if I enable 'Use GPU processing' option, kdenlive crashes when
using png file, but not when using pgm file


Reproducible: Always




kdenlive version: 15.12.0
mlt version: 0.9.8

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