Full project exports repeatedly render every frame successfully and then remain indefinitely at 92% during encoder finalization. This reproduced with MP4 at 1920×1080 and 1280×720, and with WebM at 1920×1080. The partial output stops changing and the job heartbeat stops. Waiting beyond the two-minute encoder flush timeout does not transition the job to failed. Restarting the app only marks the stuck job as interrupted.
Steps to reproduce
1. Open Project 1 on board seointel. 2. Start a full render at 30 fps. 3. Wait until all 3,567 frames complete. 4. Observe the job stays processing at 92% with the last-frame phase label. 5. Repeat at 1280×720 MP4 or 1920×1080 WebM.
Expected
After the final frame, the encoder should flush and mux the output, rename the partial file, and complete the job, or fail with the encoder flush timeout.
Actual
The job remains processing at 92% indefinitely. The partial file stops growing, updatedAt stops changing, and no error is recorded.
Error output
status=processing; progress=92; phase=rendering; phaseLabel=Frame 3,567 of 3,567 - 100%; error=null; result=null
Context
Feature: Video Editor full render / render-onserver-job. Board id: seointel. Project id: f87bef82c5964d30b41f46fbeefd4d40. Reproduced with MP4 and WebM at 30 fps, including 1280×720.
Environment
App version: 10.5.5
Platform: Windows 11 (AMD64)
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