- **hitbox**
- **hitbox:live**
- **HitRecord**
+ - **hketv**: 香港教育局教育電視 (HKETV) Educational Television, Hong Kong Educational Bureau
- **HornBunny**
- **HotNewHipHop**
- **hotstar**
- **IndavideoEmbed**
- **InfoQ**
- **Instagram**
+ - **instagram:tag**: Instagram hashtag search
- **instagram:user**: Instagram user profile
- **Internazionale**
- **InternetVideoArchive**