# Video Upload Large Files
Upload very large video files to project. This method is very simple, and it is based on sending chunks to the server.
To create client please use this implementation doc.
https://tus.io/implementations (opens new window)
In front cms we use this JS library https://uppy.io/ (opens new window)
Reference API
https://api.mov.mediaoutcast.com/documentation#/Videos/project_upload_post (opens new window)
POST
/api/projects/{project_id}/uploading
| KEY | TYPE | DESCRIPTION |
|---|---|---|
| title | string | If not provided it will use file name |
| description | string | Video description |
| crf | string | optional Maximum 51, minimum 1. Optimal CRF is around 25 |