Download a YouTube, Bilibili, or TikTok video in its highest available quality along with its cover image.
Create a bilingual subtitle version of a foreign language video for easier sharing or study.
Generate a portrait format video with burned in bilingual subtitles for Shorts style platforms.
Extract just translated subtitle files from a video without downloading the video itself.
| pengchujin/jzsub | robbyant/lingbot-vision | gvclab/cutclaw | |
|---|---|---|---|
| Stars | 841 | 842 | 831 |
| Language | Python | Python | Python |
| Setup difficulty | moderate | moderate | moderate |
| Complexity | 3/5 | 4/5 | 3/5 |
| Audience | vibe coder | researcher | general |
Figures from each repo's GitHub metadata at analysis time.
Needs Python, yt-dlp, Deno, FFmpeg with libass, and a separately downloaded MiSans font.
JZSub is a tool that takes a single video link and hands you back the highest quality version of that video, its cover image, and a version with two language subtitles burned directly into the picture. It works with YouTube, Bilibili, Vimeo, Twitch, Dailymotion, TikTok, and other sites supported by the yt-dlp download library, though what formats and subtitles are actually available depends on each platform. The tool downloads the best available video and audio streams and packages them into a nearly lossless MP4. For subtitles, it translates the source captions in small batches, keeping context between batches so the translation reads naturally, then splits the result back along sentence boundaries. The original subtitle text is never altered. By default it translates into Chinese, but you can set a different target language such as Japanese or French. The finished bilingual subtitles are burned into the video using a specific font, stacked at the bottom of the frame, with the layout adjusting automatically for vertical, portrait style videos. You choose what you actually want delivered: the full pipeline of video, cover, subtitles, and a burned in bilingual MP4, just the video plus any original subtitle file, just the raw subtitles, or only the bilingual subtitle files without downloading the video at all. If a platform has no subtitles, the tool still delivers the video, an MP4, and a cover image. JZSub is built to run as a Codex skill, a kind of plugin for the Codex coding assistant. You can install it with a single command through Codex's skill installer, or clone the repository and copy its skill folder into place manually. Once installed, you send a short command with a video link inside a Codex session and the tool handles downloading, translation, subtitle rendering, and final delivery on its own. Running it requires Python 3.10 or newer, the yt-dlp downloader, the Deno JavaScript runtime, FFmpeg built with subtitle rendering support, and a specific bold font that must be downloaded separately from Xiaomi's website. The author notes that JZSub only downloads content you already have the right to access, and does not bypass DRM, paywalls, captchas, or other platform protections. The project is released under the MIT license.
Turns a video link into the highest quality download, a cover image, and a bilingual subtitle burned in MP4, using yt-dlp and batch AI translation.
Mainly Python. The stack also includes Python, yt-dlp, Deno.
Use freely for any purpose, including commercial use, as long as you keep the copyright notice.
Setup difficulty is rated moderate, with roughly 30min to a first successful run.
Mainly vibe coder.
This repo across BitVibe Labs
Verify against the repo before relying on details.