Follow these steps in order to resolve the "Matte Assist ML render failure." Each step is designed to eliminate potential causes and restore full functionality, starting with the simplest fixes before moving to more technical solutions.
Just wanted to share a solution for anyone hitting a when using the new Matte Assist ML in Mocha Pro.
Matte Assist requires specific layer setups in the Essentials/ROTO workspace.
Sometimes, the actual machine learning weights and model files become corrupted during installation or an update. Close your host application. Re-run the Mocha Pro installer.
If you meant you need this as a log line or error report for support (e.g., for Boris FX Mocha Pro or Adobe After Effects), here's a complete example: matte assist ml render failure mocha pro verified
Install the latest NVIDIA Studio Driver or ensure your Mac OS is fully updated to leverage the latest Metal optimizations. 3. Verify Layer Structure and "Generate Object Mat"
: The video card runs out of volatile memory while processing high-resolution frames (4K+).
Machine learning frameworks can crash if third-party software attempts to hook into the GPU pipeline while a model is running. Turn off the following applications before rendering: MSI Afterburner / RivaTuner Statistics Server NVIDIA GeForce Experience Overlay Discord In-Game Overlay Summary Checklist for Fast Resolution Expected Result Switch ML Device to CPU in Preferences Isolates hardware vs. software issue Step 2 Install NVIDIA Studio Driver (Clean Install) Resolves API framework conflicts Step 3 Clear Cache & Purge Host Memory Removes corrupted frames and frees up VRAM Step 4 Use lower resolution proxies Reduces the memory load on the ML model
Which (e.g., After Effects, Premiere, standalone Mocha) are you using? Follow these steps in order to resolve the
I can provide a more specific walkthrough based on your setup.
Ensure that the frame rate of the composition matches the native frame rate of the clip exactly. Fractional frame rate mismatches (e.g., 23.976fps vs 24fps) can cause the ML engine to search for nonexistent frames, triggering a render failure. 4. Layer and Matte Organization
Does this error happen when clicking the tool, or midway through a render?
If your GPU has 8GB of VRAM or less, you are highly susceptible to this error. Sometimes, the actual machine learning weights and model
: Ensure you are using the latest "Studio" drivers (for NVIDIA) rather than "Game Ready" drivers, as they provide better stability for ML tasks. Manual GPU Selection : In Mocha Pro, go to Preferences > GPU
If you’re seeing a in Mocha Pro, you're likely hitting a common machine learning processing bottleneck. This error typically occurs when the ML model can't propagate the mask across the timeline, often due to hardware conflicts or color management settings. Troubleshooting Checklist
: Download the latest Studio Driver rather than the Game Ready Driver. Studio Drivers are specifically optimized for stable background processing in applications like After Effects, Premiere, and Mocha. Use the "Custom Installation" option and check "Perform a clean installation" .