Memory Leak with Stretched MOGRT Lower Thirds
Problem
Premiere Pro crashes on export when using a .mogrt lower third that has simple IN and OUT animations (no heavy effects). When stretched on the timeline for long durations, memory usage steadily climbs until failure. Short exports succeed; long exports always fail.
Tried fixes:
Verified .mogrt is clean (no corrupt assets or effects)
NVIDIA drivers replaced, Premiere reinstalled, overlay processes disabled, Reinabled.
Scratch disks moved to SSD (faster, no stability gain).
Tested preview formats (I-Frame MPEG vs ProRes).
Crash point shows no new graphics or effects — only the stretched lower third.
Memory (VRAM/system RAM) usage climbs continuously until exhausted.
Hardware upgrades would only delay, not fix.
Error Example 1
Export Error
Error compiling movie.
Accelerated Renderer Error
Unable to produce frame.
Component: QuickTime of type Exporter
Selector: 17
Error code: -1609629695
Error Example 2
At first I was getting ITERHPGen.exe failure. Removed it. Still crashed after removal. Reinstalled Premeire and it's back but haven't recieved that error again.
Observed Behavior
The template (84 MB) has only one-second IN and OUT animations.
- Note: It's a graphic package with lower thirds, Titles, bullets and fullscreens.
When stretched, the HOLD state appears to be continuously redrawn instead of frozen.
This redraw loop steadily consumes VRAM/system RAM until Premiere crashes.
Short stretches: stable. Long stretches: guaranteed crash.
Workarounds
Smaller Segment exports. On the 30 minute timeline, it strokes out.
Ask for Adobe Engineers
Clarify what Selector 17 / Error -1609629695 indicates in this context.
Confirm whether stretched MOGRT HOLD states are being re-rendered unnecessarily.
Should sample files + logs be submitted for engineering replication?
My system
*MOGRT has been created in most recent Adobe After Effects and used in the latest Adobe Premeire Software 2025.
System Specs (DxDiag)
OS: Windows 11 Pro 64-bit (Build 22631)
CPU: Intel Core i9-13900KF (24 cores / 32 threads, ~3.0 GHz)
RAM: 64 GB DDR5 (65,292 MB usable)
GPU: NVIDIA GeForce RTX 4070 Ti (12 GB dedicated VRAM, 44 GB total available graphics memory)
Driver: 32.0.15.8097 (Aug 6, 2025)
DirectX 12, Feature Level 12_2, WDDM 3.1Storage:
C: Samsung 980 Pro 1 TB NVMe SSD (system & apps)
E: Crucial P3 Plus 2 TB NVMe SSD
😧 WD Easystore 7.6 TB external (media/archive)Display: Dell U3419W @ 3440×1440 (60 Hz, DisplayPort)
Key Notes
GPU scheduling enabled; hardware is stable and within spec.
Ample RAM and NVMe bandwidth — crash not caused by hardware limits.
Issue reproduces only with stretchable .mogrt files in Premiere: VRAM climbs until failure despite static holds.
- Upgrades to VRAM or GPU will only delay the inevetible.
- Created a new timeline with just the lower third stretched out for 30 minutes. Crashes after about 5 minutes of a render.
I've exhausted ChatGPT with it's enthusiatic fixes that never fix. 🙂 Any other ideas? I've gone through all driver replacement and uses of different NVidia driver types as well. I'd be happy to provide the MOGRT template that I have built myself though it's double the size of what the attachment will allow here at 84mb.
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