No screenshot from LC video possible

[Paul Dupuis]

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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