Real AI agent use cases, with sources and setup prompts

Dub foreign films into English in each actor's own voice, locally

With no English subtitles or dubs for many shows, the author packed weeks of scripts and guidance into a repo: clone it, open Codex or Claude and tell it which video to dub into which language. It runs on your machine and keeps each actor's voice.

Free tierA few hoursIntermediateSource linked

Source

swax on Hacker News · 2026-10-14 · Project link

Written in our own words. Credit to the original author. Link checked 2026-10-16.

What they did

With no English subtitles or dubs for many shows, the author packed weeks of scripts and guidance into a repo: clone it, open Codex or Claude and tell it which video to dub into which language. It runs on your machine and keeps each actor's voice.

Result (as claimed)

Open source on GitHub; 8 points on Show HN.

Tools they used

OpenAI CodexClaude Code

Cost: OpenAI Codex: free plan, paid from $8/mo; Claude Code: free plan, paid from $17/mo. Checked 2026-10-14.

Set it up

  1. Collect your inputs

    List what goes in (raw footage, script, topic list or audio) and the exact output you want, for example 5 vertical clips under 45 seconds. Put inputs in one folder.

  2. Set up the tools

    Open OpenAI Codex, Claude Code. Connect accounts only where needed and note any per-minute or per-credit limits on the free plan before you start.

  3. Run one piece end to end

    Make a single output first. Check pacing, captions, voice and framing by watching it on a phone.

  4. Turn it into a repeatable recipe

    Save the prompts and settings that worked as a template so the next run takes minutes, then batch.

  5. Review before you post

    Watch every output before publishing. Check rights for music, likeness and footage, and label AI content where the platform requires it.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

You are helping me set up this AI use case end to end in Claude Code.

Goal: Dub foreign films into English in each actor's own voice, locally
What the original author did: With no English subtitles or dubs for many shows, the author packed weeks of scripts and guidance into a repo: clone it, open Codex or Claude and tell it which video to dub into which language. It runs on your machine and keeps each actor's voice.
Reported result (as claimed by the author): Open source on GitHub; 8 points on Show HN.
Source: https://news.ycombinator.com/item?id=50094005
Tools they used: OpenAI Codex, Claude Code
Category: Creators & video

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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