Thumbnails failed immediately on any clip past ~2 min. The one-pass select
expression joined frames with a flat a+b+c+... chain, which overflows ffmpeg's
recursive expression parser past ~120 terms ("Error while parsing expression").
Join the same terms as a balanced tree (depth O(log N)) instead — identical
selection, still one decode pass, exact per-tile frames preserved.
- generate_thumbnails management command: runs synchronously and streams each
phase to stdout, so jobs are watchable without tailing app logs
- surface ffmpeg's stderr instead of swallowing it in CalledProcessError
- fly: min_machines_running = 1. Background thumbnail jobs outlive the HTTP
request that triggers them, so scale-to-zero let the proxy autostop the VM
mid-job and leave projects stuck "running"
- timeline: replace the two split playhead bars (pinned lanes vs scrolling
tracks) with one full-height overlay, positioned in JS to track horizontal
scroll and sit above the translucent header
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Deploy:
- Multi-stage Dockerfile (shadow-cljs release → Python+ffmpeg runtime), fly.toml
(one machine, scale-to-zero, SQLite on a volume), .dockerignore, DEPLOY.md
- Same-origin release build: api-port defaults "9001" for dev, "" in release
(no CORS in prod)
- env-driven settings (SECRET_KEY/DEBUG/ALLOWED_HOSTS/DB_PATH/CSRF), WhiteNoise
serving static + the SPA, R2 (S3-compatible) media storage when R2_* is set
- thumbnails reworked storage-agnostic: download clip, ffmpeg select-pass, upload
tiles via default_storage (R2 in prod, disk in dev)
- pin channels/daphne; add whitenoise/django-storages/boto3
UI:
- frame step buttons flanking play (disabled at timeline bounds)
- Add-annotation button moved into the toolbar, made prominent
- picker mode pulses a 1-bit glow on clips / frame readout / (while linking)
annotation bars; linking an annotation bar inserts a timeline link
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
