Flickering video after adjusting gain

DR Beta version 17.0B Build 33.

A short mp4 clip. I adjust the gain just a little then the video randomly flickers, dips in brightness a few times a second or once a second on playback.

Can you share the clip?

I tried, what is the limit on uploads again?

You'd have to upload to a file sharing site and post the download link here.

Never mind. I just tried to make a clip to upload. I used the same original--everything and now no flicker. I already deleted the evidence
But good news it its working ok now. I hope its not an intermittent thing!

Bugs are fun, eh?

Ok, just re-created flicker. Steps were:

Import mp4 file. In Edit, trim start and end time, add 2 seconds fad to both ends, then went to color and added .09 gain.

And FYI, if I edit gain first and then trim ends in edit, there is no flicker.

Link
https://artisticimages.com/download/flicker.zip

John, is that the original clip, or an export from Resolve?

(I was asking for an original, so we could test.)

here is the original.

https://artisticimages.com/download/original.zip

Import file. In Edit, trim start and end time, add 2 seconds fad to color both ends, then go to color and added gain. play, it will be flickering.

and FTI, if I edit gain first then trim, it wont flicker.

OK.

I can't duplicate this in Studio 17b9 for Windows. No matter how I do it, no flicker. So I'm leaning towards a GPU/driver issue with your system.

What model GPU are you using? What driver version?

I am using Studio 17b9.
I have a Gigabyte GeForce RTX 2080 Super Turbo with the latest driver (Nvidia Studio Driver 461.40). Windows 10 64bit.

this is the first and only time I have seen that issue so I don't know.

I just tried on another file and same thing. I can re-create the issues every time.

Trim in edit first. then as soon as I touch the gain the flicker starts, you can see the flicker very good in the Scopes/Waveform.

I wouldn't expect that card/driver to cause any issues.

There's got to be something else specific to your system, so...let's go fishing.

Is this a dedicated editing system? No games, email, office, security, development?

No USB devices attached other than mouse or keyboard?

Monitor plugged into the GPU, not the mobo?

Any I/O devices?

no games.

this is the first time DR has ever done this "Beta 9", its has never done this before ever. nothing else has changed.

I an an IT guy over 30 year PC is clean and up-to-date.

John

and I know its not my computer because if I adjust gain first and then trim there is no issue. I can recreate the error each time and then just change work flow and no error, so that makes it DR.

And also this is consistent with my PXW Sony files.

I can recreate the error.

But I can't. Which suggests it may not be the software.

Or at least, that it may be more difficult for BMD to pin down if it is.

Sorry I couldn't be more help.

no worries. if I adjust the gain before I trim its fine. if I don't have to use the gain there are no issues at all.

And if I save the project and re-open it will also fix the flicker.