ClipLedger — Source-Linked Shorts

Turn your own video and matching SRT into source-linked vertical clips: MP4s, editable subtitles, a review page and original time ranges. Render locally with Python and FFmpeg, without a paid video API or per-render service fee. No transcription, URL download or publishing. Review context, caption alignment and audio before posting.

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Source-linked clips from your own video

Get MP4 vertical exports, editable SRT/ASS captions, covers, a review page and a ledger linking every supplied caption to its original video time range.

How it works

Your coding agent indexes a matching video/SRT pair, reviews neighboring context, chooses up to five complete passages, then runs the local Python renderer. Export in 720×1280 or 1080×1920 with original audio, burned captions and full-frame black padding. Verify output hashes before delivery.

Requirements

Download package for local execution. Python 3.10+, FFmpeg/ffprobe with libx264/libass and system fonts. Tested on Ubuntu 24.04, Python 3.12, FFmpeg 6.1.1. Other OS/agent clients not verified. No Python package dependency or paid rendering API; your agent/model and hardware costs are separate.

Inputs and limits

Supply your own local MP4/MOV/MKV/WebM and matching UTF-8 SRT. No transcription, URL download, face tracking, voice cloning, generated footage or social publishing. Entire-frame fit preserves the source; no dynamic reframing. Source-linked means traceable supplied timestamps/quotes, not certified speech or facts. Review audio, context, caption alignment and readability before posting. No promise of views, sales or platform acceptance.

What is included

Agent skill, Python CLI, editorial workflow, input/plan schemas, original synthetic demo inputs, quick-start, license and data notice. The demo is a test pattern and tone, not transcribed speech. CLI checks exports and file integrity; editorial/audio/visual accuracy remain separate.

License and data

One-time Download for personal or authorized business use. Generated clips, captions and buyer-created plans may be edited and delivered to clients. Do not modify, redistribute, resell, republish or train an AI model on the underlying Skill Package. Local renderer has no network calls or telemetry. Your chosen agent/model may process your input externally under its policies. Source rights and review are your responsibility. Capafy Terms and refund rules apply.

Support: [email protected]

外部 API

Buyer-selected coding agent / model provider

Retention Ledger — Second-by-Second Hook Analysis

Second-by-second retention forecast for your video's first 6 seconds — which seconds bleed, why, and 3 ranked hook fixes. Every prediction goes on an auditable ledger.

Free Trial

Clip Intelligence

Turn long-form content into smarter short-form opportunities.

US$4.99 / 小时

llm-real-video (Free) — let any LLM watch videos

Open-source CLI (MIT, 2k+ GitHub stars, Hacker News front page). Turn any video URL or local file into scene-aware keyframes plus a timestamped, speaker-labeled transcript your LLM can actually read. - Runs 100% on your machine, nothing is uploaded - Works with Claude, ChatGPT, Gemini or local models - URL videos reuse the platform's own captions, Whisper otherwise New in 0.10.5: Apple Silicon GPU transcription, about 6x faster on M-series Macs, same no-fake-captions gate.

免费