Blackmagic Forum

Posted: **Tue Sep 04, 2018 1:56 am**

it started in a beta, don't remember which one. GUI flashes in playback, system in signature.

https://www.dropbox.com/l/scl/AADD1WeApgoeJY_BUQgtc4zbs-wg11ZUSV0

Posted: **Tue Sep 04, 2018 5:35 am**

I have the similar problem. When I did an update from beta 6 to DR15, video starts to flash, not the whole GUI. I tought it was just in playback, but it was happened in rendered file also. Luckily I didn't try to mess anything with new drivers etc. (I already have all the latest drivers) but just roll back to beta 6 and everything was fine...

Sent from my SM-N910F using Tapatalk

Posted: **Wed Sep 05, 2018 3:31 pm**

Right now I saw your shared file. Yes, that is the same problem I had when switched to DR15 from beta 6. Now, everything is OK, when I uninstall DR15 and reinstall beta 6. For now I'll stay with beta 6

Sent from my SM-N910F using Tapatalk

Posted: **Wed Sep 05, 2018 4:12 pm**

The problem appeared first in 15 Beta 8. Until then it's the third time that I need to get back to Beta 7. I really don't understand, why this error wasn't fixed in 15.0.0.86 and 15.0.1.

My config: i7-6700K with 16GB RAM in Win 10 and GTX-1060 (6GB RAM).

Posted: **Thu Sep 06, 2018 5:43 am**

Yes, I also got this in 15b8 on Mac OSX, but it went away with 15.0 for me. The Gallery stills and the thumbnails also flickered on occasion. Zero problems now, particularly with 15.0.1. I also used the Windows 10 version of 15.0 last week and saw zero GUI problems.

Posted: **Thu Sep 06, 2018 7:16 am**

Well, Walter, first sorry about the fact you may receive a request or something resulting from a bad action of mine in the DB page.

So anyway, even if I couldn't see the video, I remember very well thoses flashes in a beta (one at least) of R15 on OSX, but it disappeared with the next one and also on the final release. However, a co-worker here in France also complains about still having this issue now...

Posted: **Thu Sep 06, 2018 10:11 am**

Could you please try to re-install 15.0.1 and see if the issue persists? We suspect something might have gone wrong with the installation which is causing this.

Posted: **Thu Sep 06, 2018 2:39 pm**

I re-installed 15.0.1 two times today and still the same issue. I tried also Beta 8 and 15.0 today without any success.
It's always gone when I go back to 15 Beta 7.
Please notice that the Playback starts flickering after doing some work on the Color Editing Page.

Posted: **Thu Sep 06, 2018 9:43 pm**

Rohit Singhal wrote:Could you please try to re-install 15.0.1 and see if the issue persists? We suspect something might have gone wrong with the installation which is causing this.

I Will try.

Posted: **Fri Sep 07, 2018 4:55 am**

Rohit Singhal wrote:Could you please try to re-install 15.0.1 and see if the issue persists? We suspect something might have gone wrong with the installation which is causing this.

uninstall and reinstall does not fix the issue.

Posted: **Fri Sep 07, 2018 3:06 pm**

vgs2003 wrote:I re-installed 15.0.1 two times today and still the same issue. I tried also Beta 8 and 15.0 today without any success.
It's always gone when I go back to 15 Beta 7.
Please notice that the Playback starts flickering after doing some work on the Color Editing Page.

I also noticed that. I could edti whole project without issues and first time I switch to color tab and move any control on it (no matter what), it starts flickering

Posted: **Fri Sep 07, 2018 5:19 pm**

Since I installed DVR 15.0 I am getting the problem. No such prob in 14.3. Waiting for the solution.
This is how My output flickers.

Code: Select all: https://youtu.be/PHZ0TvDCz6I

Posted: **Sat Sep 08, 2018 11:34 am**

I extensively use DR since v 12. Just registered on this forum to confirm this most severe problem for many years.
1. 15 Beta 7 - the last working build.
2. Reinstalling didn't solve the problem.
3. No matter what to do on color page, flashes looks like not changed(graded) frames.
4. That frames are random.
5. They present in export too

Posted: **Sat Sep 08, 2018 4:56 pm**

Any solutions yet for the flicker?

Posted: **Sun Sep 09, 2018 6:06 am**

I have this too on windows 10. Tried OpenGL & CUDA GPU processing modes but no improvement. Never experienced this with any of betas I've tried. This is for studio version, not sure about free.

What causes the flickering is color correction node gets bypassed randomly on random frames. Make a drastic color change to really notice the flickering.

Posted: **Sun Sep 09, 2018 8:16 pm**

FWIW: Still some other problems on Ubuntu 18.04, but NOT this.

Posted: **Fri Sep 14, 2018 4:26 pm**

So, Is this issue addressed in 15.1?
very eagerly waiting.

Posted: **Fri Sep 14, 2018 5:52 pm**

The issue is still there. I tried to edit several Blackmagic RAW-files from my Ursa Mini Pro. Either in the editing page and export file: It still flickers! Now again back (for the 4th time) to Beta 7 and without Blackmagic RAW support. :-(

Posted: **Sat Sep 15, 2018 1:26 pm**

Yes, it still flashing... Recently I installed DR 15.1.0.23 and that was a mistake. Still flashing. But flashing only on graded clips. Ungraded clips are performing normal.
Just to be clear, whole GUI doesn't flashing. Flashing just a video in timeline viewer. Exported video also flashing.
I have the latest nVidia drivers 339.24, win 10 64bit with all updates installed, GTX 1080, 32GB DDR3 RAM, i7 3770

Posted: **Sat Sep 15, 2018 2:55 pm**

can someone check if you get flashes only on cached clips after color (and cache)?

Posted: **Sat Sep 15, 2018 3:50 pm**

waltervolpatto wrote:can someone check if you get flashes only on cached clips after color (and cache)?

I am getting on all CCd clips.

Posted: **Sat Sep 15, 2018 4:15 pm**

Usually I'm not using cashed media clips, but got flashes in both cases. Until just edit and not use CC everything is OK

waltervolpatto wrote:can someone check if you get flashes only on cached clips after color (and cache)?

Posted: **Sat Sep 15, 2018 5:37 pm**

waltervolpatto wrote:can someone check if you get flashes only on cached clips after color (and cache)?

Hi Walter,

I tested with DNxHR HQX cache and DNxHR 444 - HDR for a test with the new BMD RAW codec
Project 4096 x 1716 DCI Scope 2.39 @ 24 fps
Monitoring: 4K2060p @ 24

1-Playback => Render cache SMART: no flickering
+
2-Add Grain OFX => cache node => ON => No flickering

Maybe...(?)
If possible: completely format the drive (s) cache (s). I suspect that the format of the hidden files is not "exactly" the same from one version to another.

(OK guys: do not be hard: this is my first try with this new BMD RAW but we can discuss it in another thread

)

preference_settings.jpg

After_cache_playback_and_cache_node_DVR_15_1.jpg

After_cache_playback_and_cache_node_1.1.jpg

Posted: **Sat Sep 15, 2018 8:41 pm**

on the timeline I have now it seems to be prevalent when it is cached. DNxHQ... could be a decode issue? the original dpx don't do that...

Posted: **Mon Sep 17, 2018 1:56 pm**

I've tried to change various configuration options: choosing CUDA and OpenGl acceleration, Turning on/off cache and setting it up with every possible way, etc - still everything without success. I guess the issue is rooted deeper. My guess: it may be a bug involving GPU memory. In my case flickering don't appear in firsts few minutes since opening Resolve, then everything starts to flash (turning on/off color correction - when cc is off playback is flawless)

Posted: **Tue Sep 18, 2018 4:29 pm**

Is it fixed in 15.1.0.25, I updated and no flicker today.

Posted: **Tue Sep 18, 2018 6:19 pm**

Yogendra Singh wrote:Is it fixed in 15.1.0.25, I updated and no flicker today.

I will check once home.

Posted: **Tue Sep 18, 2018 8:41 pm**

waltervolpatto wrote:on the timeline I have now it seems to be prevalent when it is cached. DNxHQ... could be a decode issue? the original dpx don't do that...

i have seen very similar issues with DNxHD/HR in nuke often -- that's why i usually use only ProRes in nuke for reencoded footage -- but i don't know, if blackmagic is using the same codec implementation...

Posted: **Tue Sep 18, 2018 10:08 pm**

Martin Schitter wrote:
waltervolpatto wrote:on the timeline I have now it seems to be prevalent when it is cached. DNxHQ... could be a decode issue? the original dpx don't do that...

i have seen very similar issues with DNxHD/HR in nuke often -- that's why i usually use only ProRes in nuke for reencoded footage -- but i don't know, if blackmagic is using the same codec implementation...

I don't recall seeing in v14 though...

Posted: **Wed Sep 19, 2018 1:22 am**

version 15.1.0.025 (downloaded now) still flashes...

Posted: **Mon Sep 24, 2018 5:44 am**

It looks like this is not happening often. There are just a few of us reporting this problem... I tought it could be hardware related problem, but in DR 14 I had no such issue. As a matter of fact in DR 14 I had no issues at all :-)

Sent from my SM-N910F using Tapatalk

Posted: **Thu Sep 27, 2018 2:20 pm**

update, it still flashes in 15.1.1.003.

Posted: **Thu Sep 27, 2018 11:45 pm**

waltervolpatto: also have 1080ti 4GB (no sli, Gainward)

Posted: **Sat Sep 29, 2018 1:51 pm**

Update:

The error has been reproduced in the lab. The dev are on it.

Posted: **Wed Oct 17, 2018 8:14 am**

This should be addressed in the 15.1.2 release that is available on our website. Please try it out.

Posted: **Sun Nov 11, 2018 10:01 am**

It was solved with latest version. At least on my PC

Posted: **Sun Nov 11, 2018 4:53 pm**

georgekg wrote:It was solved with latest version. At least on my PC

Yes on mine too.

Posted: **Mon Nov 12, 2018 9:59 am**

Anish, might we have any short & basic explanation of what this issue was connected to ?

Posted: **Wed Nov 14, 2018 3:10 pm**

On windows machine, under certain circumstances, during playback, the gui image was constantly change state between full range and video range, causing the appearance of "flashes".

External monitoring and exports where not affected.

Posted: **Thu Nov 15, 2018 6:30 am**

waltervolpatto wrote:On windows machine, under certain circumstances, during playback, the gui image was constantly change state between full range and video range, causing the appearance of "flashes".

External monitoring and exports where not affected.

I think this theme has the wrong name. GUI doesn''t flash. The only thing that is flashing is video in program monitor. And it keeps flashing even as exported file.
"Certain circumstances" in my case was to change any value on color page. Even when I reset every change I made, flashing stays. While I was doing things on edit page, everything was normal. Export was affected too. I tought it may be just GUI problem, but in that case exported file should be ok. And it isn't. Exported video flashing too.

Posted: **Thu Nov 15, 2018 9:23 pm**

georgekg wrote:
waltervolpatto wrote:On windows machine, under certain circumstances, during playback, the gui image was constantly change state between full range and video range, causing the appearance of "flashes".

External monitoring and exports where not affected.
I think this theme has the wrong name. GUI doesn''t flash. The only thing that is flashing is video in program monitor. And it keeps flashing even as exported file.
"Certain circumstances" in my case was to change any value on color page. Even when I reset every change I made, flashing stays. While I was doing things on edit page, everything was normal. Export was affected too. I tought it may be just GUI problem, but in that case exported file should be ok. And it isn't. Exported video flashing too.

That is a different issue: never an issue in export to me, only playback.

Posted: **Thu Jun 06, 2019 7:42 pm**

Bumping this post.

Was this issue ever resolved or have a work around provided?

I recently started using DVR for editing down action camera footage. I noticed flickering as described in this thread on my most recent video. It may have been present in previous videos and I may not have noticed. The flicker can be seen in the GUI editing monitor, the export monitor as well as the final export. I am using DVR 15.3.1.003. Help would be appreciated. Thanks!

Posted: **Thu Jun 06, 2019 10:16 pm**

Jooorgeee wrote:Bumping this post.

Was this issue ever resolved or have a work around provided?

I recently started using DVR for editing down action camera footage. I noticed flickering as described in this thread on my most recent video. It may have been present in previous videos and I may not have noticed. The flicker can be seen in the GUI editing monitor, the export monitor as well as the final export. I am using DVR 15.3.1.003. Help would be appreciated. Thanks!

if it is in the final export, it is NOT this bug. this has been solved

Posted: **Wed Jul 17, 2019 12:30 am**

Jooorgeee wrote:Bumping this post.

Was this issue ever resolved or have a work around provided?

I recently started using DVR for editing down action camera footage. I noticed flickering as described in this thread on my most recent video. It may have been present in previous videos and I may not have noticed. The flicker can be seen in the GUI editing monitor, the export monitor as well as the final export. I am using DVR 15.3.1.003. Help would be appreciated. Thanks!

I have the exact same version and just started having the exact same issue.
It just started all of a sudden in a middle of a grading session. Restarting didn't solve it and according to this thread it seems very unlikely that anything would, other than a different version which is not something i want to do in a middle of a project.
Any ideas?

Posted: **Thu Jul 18, 2019 4:40 am**

This was resolved in the beta stage

Posted: **Fri Aug 16, 2019 1:41 pm**

I seem to be having this exact issue in the latest version (16.1 beta 1).
After doing anything in the color tab, those clips will flash randomly on playback and export. At first I thought it was related to CUDA, but it is also the case with OpenCL selected.

I wonder if the bug has come back?
I haven't had this problem in previous versions.

Posted: **Wed Aug 21, 2019 6:12 pm**

Singularity wrote:I seem to be having this exact issue in the latest version (16.1 beta 1).
After doing anything in the color tab, those clips will flash randomly on playback and export. At first I thought it was related to CUDA, but it is also the case with OpenCL selected.

I wonder if the bug has come back?
I haven't had this problem in previous versions.

If it flashes in export, it is not the same bug.
Probably gpu related.

Posted: **Tue Sep 17, 2019 4:10 pm**

Linux, resolve lite 16.1b3, 1060 6gb driver 418.74, 4gb ram (swap on ssd for now)
Any change in color tab makes the image flicker between the non graded and graded version during playback.
Scopes are also reflecting these changes (flickering).
Export also flashes
I was unable to reproduce that on windows 10 64bit with Resolve Lite 16.1b3 or 16.1b2
Happens on linux with 16.1b3, but not with 16.0

Posted: **Tue Sep 24, 2019 5:45 am**

Boris Kovalev wrote:Linux, resolve lite 16.1b3, 1060 6gb driver 418.74, 4gb ram (swap on ssd for now)
Any change in color tab makes the image flicker between the non graded and graded version during playback.
Scopes are also reflecting these changes (flickering).
Export also flashes
I was unable to reproduce that on windows 10 64bit with Resolve Lite 16.1b3 or 16.1b2
Happens on linux with 16.1b3, but not with 16.0

I've seen the same thing using Debian 10 and NVIDIA 418.74 (system in signature). For me it happens after working a while and switching back and forth between edit and color page. Staying in the edit page makes it work a lot longer before the flickering starts. Restarting Resolve fixes the flickering for a while.

16.0 is not affected by this as far as I can tell. [edit] It happens in 16.0 as well but not as often.

Boris, does the flickering also appear in the final render for you?
It does for me and sometimes the flickering starts mid-render.

Posted: **Fri Sep 27, 2019 10:21 pm**

Daniel Tufvesson wrote:Boris, does the flickering also appear in the final render for you?
It does for me and sometimes the flickering starts mid-render.

I have the flickering during entire exported video. Will retest after adding some ram to my setup
It just switches between graded (most of the video) and ungraded (i'd say 1 frame only every 2-3 second) version during entire footage.

p/s your makeresolvedeb is great! Using it with debian 10 also, thanks!

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