How to remove the watermark image by addPixelBufferSource?

[Jasonzn]

I've tried to add the watermark image with dynamic timestamp label by addPixelBufferSource function. But I need to remove the former image before adding a new image by addPixelBufferSource.

Does anyone know how to do this?

Thank you.

Jason

[Jasonzn]

The watermark image must be removed because the different image will mix together. So I must remove the old image added by addPixelBufferSource recovery the original camera preview screen.

[miketw2014]

Any updates on this? Looking for a way to remove the watermark later on during the streaming session.

[Jasonzn]

No, I don't find the way yet until now. Sorry... Jason Madhawan Misra <[email protected]>於 2017年5月10日 週三，下午1:12寫道：

…

Any updates on this? Looking for a way to remove the watermark later on during the streaming session. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <https://github.com/jgh-/VideoCore/issues/347#issuecomment-300375675>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AVft6UOMrSrmZUSpaghsgC3WnOLsvXx4ks5r4UckgaJpZM4KMQeQ> .

[iHandle]

I am so excited to find that you also want to remove a watermark. To do this, I add the belowing function at VCSimpleSession.mm

-(void) removePixelBufferSource {
    m_videoMixer->unregisterSource(m_pixelBufferSource);
}

It really works. However, I have found that sometimes it will crashes at GLESVideoMixer.h . I have no idea how to fix this problem, I hope you will find something.