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Author Topic: Video Picture is not Shown  (Read 312 times)

Ravindra

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Video Picture is not Shown
« on: January 17, 2020, 06:07:31 PM »

Hello,

I just installed my Video Application on my new laptop with following specs,

CPU: Intel i5-825OU, 1.6HZ
Ram: 8 GB
System: Windows 10 Pro (64 Bit)
Graphics: Intel UHD Graphics 620
Codec : K-lite latest version.
Application is developed on Windows 7 and VS2010 and Microsoft .Net Framework 3.5

When i start video in my application the Video is missing (No Picture) however Audio is fine.

What must be the issue ? Is this a compatibility issue of Intel Graphics with K-lite?

Can you please guide me to resolve the problem?

Thanks and Regards,

Ravindra.


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Re: Video Picture is not Shown
« Reply #1 on: January 17, 2020, 07:25:10 PM »

Hello,

the reason could be an incompatibility between one of the transform filters used for managing output on multiple screens (named "InfinitePinTee") and the video driver. This may sometime due to the color space used in output by the LAV video decoder.

Unfortunately our component doesn't have control over the output format of the LAV decoder so there may be the need to make some fine tuning inside the properties page of the LAV decoder itself; we would try the following:
1 - inside the Windows "Start" menu select "K-Lite Codec Pack/Codec Tweak Tool"
2 - inside the "Configuration" section press the "DirectShow filters" button
3 - under the "Video decoders" column select the "LAV video decoder" button
4 - on this page you will find a number of checkboxes inside the "Output formats" groupbox, each indicating a different output format
5 - on our system the "YV12" format seems to be the default so we would try to uncheck the "YV12" checkbox and press the "Apply" button without closing the page
6 - now try to reload the video using our component and see if it works; if it shouldn't, you may try to uncheck other check boxes until the problem disappears: we would live the "YUY2" checkbox checked which, at least here, seems to work correctly: please, don't forget to press the "Apply" button each time you uncheck one or more checkboxes

Hope this helps

Kind Regards

Severino Delaurenti
MultiMedia Soft
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Longlie

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Re: Video Picture is not Shown
« Reply #2 on: February 17, 2020, 03:38:37 PM »

Can messing with the DirectShow filters break something?
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Re: Video Picture is not Shown
« Reply #3 on: February 18, 2020, 07:30:43 PM »

Hello,

re-configuring video filters installed through K-Lite should not impact DirectShow's general behaviour because the installed "Codec Tweak Tool" comes with a feature which allows to "Reset", "Backup" and "Restore" applied settings.

Kind Regards

Severino Delaurenti
MultiMedia Soft
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