fix(cover): 封面标题叠加 — 选标题后用 ffmpeg drawtext 在封面图上叠加文字 #1375
Merged
xiaoxia
merged 2 commits from 2026-08-15 16:00:16 +08:00
fix/cover-title-overlay into develop
2 Commits
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d48d652465 |
style: auto-format with black + isort + prettier [skip ci-format-check]
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xiaoxia
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1a2f34e508 |
fix(cover): overlay title text on cover image after frame extraction
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Root cause: cover frame is extracted during preview video rendering (Step 3), but user selects title AFTER rendering (Step 4). The cover frame naturally has no title because it was captured before the title was chosen. Fix: In generation_cover.py, after finding cover_url_from_task, check if plan.config['title']['text'] has a title. If yes, download the cover image, use ffmpeg drawtext to overlay the title (white text + black shadow, centered near bottom), upload to OSS, and return the new URL. On failure, fallback to original cover_url. Changes: - Add _overlay_title_on_cover_image() helper in generation_cover.py - Add _escape_drawtext_text() for ffmpeg special character escaping - Modify cover route to check for title and overlay if present - 12 new unit tests (test_cover_title_overlay.py) - All 13603 tests pass Fixes: cover title missing issue in staging |