cobalt/README.md
wukko 450d01753d update the way environment variables are checked
no longer checking for .env file, just the variables
2023-04-09 09:40:13 +06:00

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# cobalt
Best way to save what you love.
Live: [co.wukko.me](https://co.wukko.me/)
![cobalt logo with repeated logo pattern background](https://raw.githubusercontent.com/wukko/cobalt/current/src/front/icons/pattern.png "cobalt logo with repeated logo pattern background")
[![Crowdin](https://badges.crowdin.net/cobalt/localized.svg)](https://crowdin.com/project/cobalt) [![DeepSource](https://deepsource.io/gh/wukko/cobalt.svg/?label=active+issues&token=MsmsJ9zUOKwcQor0yaiFot84)](https://deepsource.io/gh/wukko/cobalt/?ref=repository-badge) [![DeepSource](https://deepsource.io/gh/wukko/cobalt.svg/?label=resolved+issues&token=MsmsJ9zUOKwcQor0yaiFot84)](https://deepsource.io/gh/wukko/cobalt/?ref=repository-badge)
## What's cobalt?
cobalt is a social and media platform downloader that doesn't piss you off.
It's fast, friendly, and doesn't have any bullshit that modern web is filled with: no ads, trackers, or analytics. Paste the link, get the video, move on. It's that simple. Just how it should be.
## Supported services
| Service | Video + Audio | Only audio | Additional features |
| -------- | :---: | :---: | :----- |
| Twitter | ✅ | ✅ | Ability to save multiple videos/GIFs from a single tweet. |
| Twitter Spaces | ❌️ | ✅ | Audio metadata. |
| YouTube & Shorts | ✅ | ✅ | Support for 8K, 4K, HDR, and high FPS videos. Audio metadata & dubs. h264/av1/vp9 codecs. |
| YouTube Music | ❌ | ✅ | Audio metadata. |
| Reddit | ✅ | ✅ | GIFs and videos. |
| TikTok | ✅ | ✅ | Video downloads with or without watermark; image slideshow downloads without watermark. Full audio downloads. |
| SoundCloud | ❌ | ✅ | Audio metadata, downloads from private links. |
| bilibili.com | ✅ | ✅ | |
| Tumblr | ✅ | ✅ | |
| Vimeo | ✅ | ❌️ | |
| VK Videos & Clips | ✅ | ❌️ | |
## cobalt API
cobalt has an open API that you can use for free. It's easy and straightforward to use, [check out the docs](https://github.com/wukko/cobalt/blob/current/docs/API.md) and see for yourself.
## How to contribute translations
You can translate cobalt to any language you want on [cobalt's Crowdin](https://crowdin-co.wukko.me/). Feel free to ignore QA errors if you think you know better. If you don't see a language you want to translate cobalt to, open an issue, and I'll add it to Crowdin.
### Translation guidelines:
- All text is **ALWAYS** stylized as **lowercase** unless it's STRESSED LIKE THIS or is an internal value like `{ContactLink}` or `{appName}`.
- Example: "`this is a live video, i am yet to learn how to look into future. wait for the stream to finish and try again!`".
Notice how **everything is lowercase**, no matter the punctuation marks? Yes, that's cobalt's style and you have to follow it.
- Avoid formal language. Leave it for big and classy tech companies. Use informal language wherever possible.
- Keep translations lively, friendly, and fun. Translate strings as if the user was your buddy.
- You can (and should) rephrase sentences as long as they keep the same sense and send the same message as original.
- You can add wordplays or puns if it feels natural to do so.
- Do **NOT** use offensive or explicit vocabulary.
- Check if there are issues in UI with your localization, and optimize it accordingly. If impossible, open an issue.
- Be nice.
## Host an instance yourself
You might find cobalt's source code a bit messy, but I do my best to improve it with every commit.
### Requirements
- Node.js 17.5 or above
- git
### npm modules
- cors
- dotenv
- esbuild
- express
- express-rate-limit
- ffmpeg-static
- got
- node-cache
- url-pattern
- xml-js
- youtubei.js
Setup script installs all needed `npm` dependencies, but you have to install `Node.js` and `git` yourself.
1. Clone the repo: `git clone https://github.com/wukko/cobalt`
2. Run setup script and follow instructions: `npm run setup`
3. Run cobalt via `npm start`
4. Done.
### Docker
It's also possible to host cobalt via a Docker image, but in that case you'd need to set all environment variables by yourself.
That includes:
| Variable | Example |
| -------- | :--- |
| `selfURL` | `https://co.wukko.me/` |
| `port` | `9000` |
| `streamSalt` | `randomly generated sha512 hash` |
| `cors` | `0` |
## Disclaimer
cobalt is my passion project, so update release schedule depends solely on my motivation, free time, and mood. Don't expect any consistency in that.
## License
cobalt is under [AGPL-3.0](https://github.com/wukko/cobalt/blob/current/LICENSE) license.
[Fluent Emoji](https://github.com/microsoft/fluentui-emoji) used in the project is under [MIT](https://github.com/microsoft/fluentui-emoji/blob/main/LICENSE) license.