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feat(video): server-generated poster thumbnails + HTTP Range streaming

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- Dockerfile: add ffmpeg (Alpine).
- static.js: new /thumbs/<id> — ffmpeg extracts the first frame (0.5s), caches it next to
  the file, serves as the video poster (cosmetic; 404s gracefully if ffmpeg unavailable).
- static.js: /files now supports HTTP Range (206 Partial Content) + Accept-Ranges, which
  iOS requires to stream/seek video reliably (fixes the buffer-before-play / multi-tap);
  media (image/video/audio) now served inline, other files still download. Shared
  attachment auth refactored into one helper used by /files and /thumbs.
- home.html: video poster points at /thumbs/<id>. build batch157.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Sravan
2026-07-22 22:09:32 +05:30
parent 92d41e6324
commit fd15628393
3 changed files with 59 additions and 13 deletions
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@@ -2,6 +2,9 @@
# Node 24 ships node:sqlite as a stable built-in (no flag), which db.js relies on.
FROM node:24-alpine
# ffmpeg: server-side video poster thumbnails (see static.js /thumbs/<id>). Small on Alpine.
RUN apk add --no-cache ffmpeg
ENV NODE_ENV=production
WORKDIR /app/server