random bars appear, green, gray, black in preview and export, Pp 2021

[Pilot98A1]

Hi

Im new to Pp, installed fresh version and tried first composition.

footage shot on gopro 1080p resolution. noticed that green bars but smaller in preview and was thinking that is preview or corrupted source issue.

after exporting found same and bigger randomly all over video. tried to change settings, codec, resolution - same, just other random places.

any ideas what can be here?

PC is not super video editor's - dell inspiron laptop with intel iris xe integrated card, last drivers

[Peru Bob]

Have you turned off GPU acceleration?

[John T Smith · Accepted solution]

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter
Intel https://downloadcenter.intel.com/product/211969/Intel-HD-Graphics-Family
There are also intermittent reports that the newest driver is not always the best driver due to driver bugs or compatibility issues, so you MAY need to try an earlier driver version

[Peru Bob]

The laptop may need Dell specific drivers rather than the ones provided by the graphics manufacturer.

[Pilot98A1]

Yes, It is written so, that Dell can reject Intel's driver. Dell's suport software and windows update were not able to find new version of driver. But I have found it on Intel's page. It failed to install, so I had to install manualy. Will make another movie tomorrow and will see does that help.

Yes, after swithching off GPU accelleration I have managed to make video without glitches. But only after I have turned off h264 decoding at Media setings, not Project setings - Mercury...hardware. unfortunately thats makes rendering 5-6 times longer...

Will update soon

[Pilot98A1 · Accepted solution]

well. after updating to new "secret for dell/windows" Intel driver Pp made rendering without glitches