Dev.to
7/27/2026
Debugging an automated FLUX-to-video pipeline: caching, resume, and frame-drift pitfalls
Original: "Is it actually running?" — the night I asked three times while stitching 17 images into one video
Short summary
A developer shares lessons from rebuilding an automated history-explainer video pipeline that generates 17 images via local FLUX and stitches them into a narrated video. Two key pitfalls: an external model's cache caused a --force flag to restart from scratch instead of resuming, and per-clip frame rounding caused audio/video drift. Fixes included adding an idempotent skip-check and computing total frame counts before rounding.
- •FLUX image generation on 16GB Mac requires strict sequential execution and memory checks
- •External model caching broke resume logic; fix was a simple idempotent file-existence skip
- •Per-clip frame rounding caused cumulative audio drift; compute totals first, then round
Generated with AI, which can make mistakes.
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