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Matinee - Out of memory


I don't know if it's really a bug or if I've made something wrong.

When I "Record Movie" in matinee (.jpg / 30fps / stream texture or not), the computer start to go out of memory and finish by a BSOD.

The memory used by the UEeditor process increase very fast ( about 100-200Mb/s), after 1 minute my memory (16Gb) is full and start to swap. Pagefile.sys is managed by system and I think the system limit it to about 25Gb. And Windows alert me that I run out of memory. I can avoid BSOD by shuting down the editor fastly after the Windows alert. I want to record a sequence of 3-4 minutes, but crash occurs at 2 minutes and few seconds.

My Spec: Core I7 3770k / 16 Gb of RAM / Plenty space on differents SSD/ GTX 960 4Gb Any ideas?

thanks by advance

Product Version: UE 4.11
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asked Apr 12 '16 at 02:51 PM in Bug Reports

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avatar image Metathesus Apr 14 '16 at 09:16 AM

I've been able to export the video frames with command line (only 2 or 3Gb of RAM used instead of more than 40Gb....)

 "C:\EditorPath\ue4editor.exe" "ProjectPath\ProjectName.uproject" -game Content/Maps/LevelName.umap?-ResX=1920 -ResY=1080 -BENCHMARK -FPS=30 -MAXQUALITYMODE -DUMPMOVIE -NOTEXTURESTREAMING -FULLSCREEN

All is exported in Png, very long and voluminous, but it works.

So if you have any ideas of to make "Record Movie" works in matinee, I will be happy to read you.

avatar image Matt.Williams Apr 14 '16 at 07:49 PM

Hey Metathesus,

Can you send me a screenshot of your Render Settings window? I'd like to see all of the settings you're using. A setting that might help you out is "Use Separate Process".

I can't seem to reproduce the memory increase. Are you able to reproduce this on a basic template project?

-Matt W.

avatar image Metathesus Apr 14 '16 at 08:26 PM

Hey Matt,

I've tried with a the template project "First Person", the problem does NOT occurs.

Screenshots here:

alt text

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If you needs some obscures logs, I can send them to you after you specify me what exactly you need to debug.

Thanks for your time!

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avatar image Matt.Williams Apr 18 '16 at 05:47 PM

Can you check your output log for any log spam? Look for some Access None errors, that kind of thing. Can you try a "Play in New Editor Window"(No rendering) and let me know if that also causes a memory increase?

-Matt W.

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After your request, I test and It seems the bug go away.

I've made a lot of changes on my project (most on BP) , so I don't know what changes made the trick.

If you really need to track the bug, I can restore an old save for UE4 Development and check if the bug was present.

Thanks for your help

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answered Apr 18 '16 at 06:38 PM

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avatar image Matt.Williams Apr 18 '16 at 07:12 PM

Hey Metathesus,

That's great! It may involve a lot more testing to track down, but might be easier now that you have broken/working versions of the project. The first thing we'd do is get a copy of the output log. We'd also run a memreport and see if we can track the problem there.

So it's up to you if you'd like to continue investigating.

-Matt W.

avatar image Metathesus Apr 18 '16 at 07:59 PM

After Investigations on a backup, I'm pretty sure that my bug come from this function (in my custom skysphere) on "Event Tick" instead of "Event Begin Play"

Now Movie is OK and I haven't a performance drop after one minute of gameplay.

alt text

My Output Log was showing nothing interesting about that.

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