I Automated a TikTok Campaign for My App by Editing CapCut's Project Files Directly

Description and use

Reduced video creation time from ~1 hour to ~5 minutes per clip by scripting text → TTS with word timestamps → caption chunking → direct CapCut JSON editing.

Problem

Produce daily short vertical videos for a TikTok campaign in ~5 min each, without paid tools or extensive editing time.

Outcome

Reduced video production time from ~1 hour to ~5 minutes per clip, enabling a 14‑day experiment aiming for 500+ Play Store installs or a 50k‑view video.

Workflow

• Write 100–130 word script
• Generate MP3 and word‑boundary JSON with edge‑tts
• Align words to script, chunk into 2–3 word captions
• Edit CapCut project JSON: replace text tracks, set timings
• Export video from CapCut
• Schedule upload to TikTok/IG Reels

Evidence

CapCut desktop stores each project as a folder containing draft_content.json — tracks, segments, materials, text styles, all in plain JSON.

Source

edge-tts streams word boundary events with timestamps alongside the audio.

Source