RTP stream flickers with wide black lines

[vlad-29]

Hello, I'm streaming video from webcam over rtp with libvlc and watch it on the same computer with VLC but I have flickering wide black horizontal lines. It seems like there is packet loss but I can't understand how they can loss on the same computer. There is no log messages when I see black lines. I brouse network settings but found nothing. Why black lines appear and how to remove them?

[Lotesdelere]

Please post a screenshot.

[vlad-29]

Here is frame with line. It is too hard to catch flickering lines with screenshot so I took video of screen and get this frame from it.

I have tried: different cache size for network, anti-flickering filters, different codecs and video bit-rate in libvlc streaming part, but nothing helped. Is there any way to remove this problem or just somehow hide black lines?

[Jean-Baptiste Kempf]

Are you sure this is not a video driver issue?

[vlad-29]

Thanks, I found the problem. Sometimes imem module took buffer that was not ready to be taken, so it displayed the frame that was't copied to the end.