No screenshot from LC video possible

[Roger Eller]

I don't think it's DRM since the OP also said, " Up to now, this issue
happens only at 2 customers, on all other Win 10 machines, taking a video
screenshot works fine."

I'll place my 2 cent bet on the video card.  Look for a common thread like
- the fails happening on Nvidia, ATI, or built-in graphics controllers.

~Roger

On Jul 11, 2017 7:12 AM, "Paul Dupuis via use-livecode" <
use-livecode at lists.runrev.com> wrote:

> My guess is that it could be Digital Rights Management related?
>
> If you can screenshot a DRM protected video then, in principle, you
> could screenshot every frame and encode the frames back into a DRM-free
> version of the video. Do you know what the videos that had the problem
> were?
>
>
> On 7/11/2017 3:20 AM, Tiemo Hollmann TB via use-livecode wrote:
> > Hello,
> >
> > LC 8.1.4, Windows 10
> >
> > I am using the standard LC videoPayer (directShow) to play H.264 mp4
> videos.
> > One essential feature of my program is, that the user can take
> screenshots
> > from the video, edit and save them.
> >
> > Today I got the second customer call with a Win 10 machine, who can't
> take
> > screenshots from my LC videos. The video screen is just black on the
> taken
> > screenshot. This issue does not only happen with the build in LiveCode
> > screenshot feature, but also, if they take a screenshot with the windows
> > print key or other screenshot tools.
> >
> > Up to now, this issue happens only at 2 customers, on all other Win 10
> > machines, taking a video screenshot works fine. The alwaysBuffer of the
> > videoPlayer is set to false (setting it to true, I don't see any video
> > playing) I also checked to disable the Kaspersky AV on the client
> computer
> > (Kaspersky has a feature to prevent screenshots), but without success.
> Btw.
> > the old version of my program with the quicktime player works fine on
> these
> > machines.
> >
> > I googled a lot, but didn't found any related issues in the net, so I
> > assume, it must be related to the LiveCode implementation of the
> directShow
> > videoPlayer. But in combination with any special hardware or software
> > setting on these two computers.
> >
> > Has anybody already experienced similar issues or has any shot in the
> dark,
> > what system options, drivers, other tools in combination with LiveCode
> could
> > have an influence on taking a screenshot?
> >
> > Any idea, what I could check for is welcome
> >
> > Tiemo
> >
> >
> >
> >
> >
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