MC demo failing

[Mark Sunnucks (Snux)]

So, I'm setting up MPF on a new Windows PC.  I've tried with both version 55 and also the latest dev and in both cases the mc_demo is failing on trying to load the second slide.  Complains about a bad transparency mask when trying to load a GIF file (I can view it fine from file explorer, so the file exists and is valid).  Any thoughts?

The demo man demo runs fine.  This likely isn't a showstopper as I'm going to be using segment displays, but curious why the error is coming up.

[Matt Kemp]

I was getting this too - the transparency error seems to be with /images/jackpot.gif. I opened it in Photoshop and re-saved it and the MC Demo works for me now (although I do still get a gstreamer error pop up first).

Note: you can't just rename the original jackpot.gif, the code still sees it and throws the error, you have to move it right out of the images folder.

```

The procedure entry point DH_get0_p could not be located in the dynamic link library c:\users\[username]\mpfenv\share\gstreamer\bin\librtmp-1.dll

```

I'll see if I can open a pull request to change that file.

[Matt Kemp]

I've submitted a pull request with a re-saved jackpot.gif that doesn't have transparency issue

On Tuesday, January 11, 2022 at 4:32:58 AM UTC+13 Mark Sunnucks (Snux) wrote:

[grastle flowpat]

Any idea how the error is generated? If I save an animated gif from Adobe's Premier Pro (PP), with no transparent areas, it generates (I believe) a valid GIF that MC throws a ValueError: bad transparency mask on. If I generate an empty mask in PP (generating a transparency), then no error is produced.  Does this mean that some part of MC requires animated GIFs to have a transparency, unlike say the video player?

[Brian Madden]

Personally I have no idea, but I would guess no one in this forum would. The MPF-MC uses Kivy as its interface for all multimedia things (which in turn uses SDL2, Gstreamer, etc.) So when I have issues about anything like this, I search the Kivy forums.

That said, I’ve also found that removing the Python package PIL can prevent crashes like this, I think? (Also I have no idea why.)

Brian

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Brian Madden
Product Management / Tech Marketing
FAST Pinball | br...@fastpinball.com | 415.314.1193

[grastle flowpat]

Thank you Brian, I'll hunt around and update here if I find something concrete.