KV-Download (Media Roller)

A mobile friendly tool for downloading videos from social media. The backend is a Golang server that will take a URL (YouTube, Reddit, Twitter, TikTok, Instagram, etc), download the video file, and return a URL to directly download the video. The video will be transcoded to produce a single mp4 file.

This is built on yt-dlp. yt-dlp will auto update every 12 hours to make sure it's running the latest nightly build.

Note: This was written to run on a home network and should not be exposed to public traffic. There's no auth.

Running

Make sure you have yt-dlp and FFmpeg installed then pull the repo and run:

./run.sh

Or for docker locally:

./docker-build.sh
./docker-run.sh

Docker Image

The Docker image is available from the Forgejo container registry:

docker pull git.khoavo.myds.me/vndangkhoa/kv-download:v1

Deploy on Synology NAS (CLI)

1. Login to the registry (one-time):

docker login git.khoavo.myds.me -u vndangkhoa -p Thieugia19

2. Run with docker-compose:

docker compose up -d

Deploy on Synology NAS (Container Manager GUI)

1. Open Container Manager → Registry → Add

   • Server: git.khoavo.myds.me
   • Username: vndangkhoa
   • Password: Thieugia19

2. Search for vndangkhoa/kv-download and download the v1 tag

3. Go to Container Manager → Project → Create

   • Project name: kv-download
   • Paste this docker-compose.yml:

   services:
     kv-download:
       image: git.khoavo.myds.me/vndangkhoa/kv-download:v1
       container_name: kv-download
       restart: unless-stopped
       ports:
         - "9292:9292"
       volumes:
         - ./downloads:/download
       environment:
         - MR_DOWNLOAD_DIR=/download
         - TZ=Asia/Ho_Chi_Minh
   

4. Click Next → Done to start the container

5. Access the app at http://<NAS-IP>:9292

Build Your Own Image

docker build -t git.khoavo.myds.me/vndangkhoa/kv-download:v1 --platform linux/amd64 .
docker push git.khoavo.myds.me/vndangkhoa/kv-download:v1

Docker Environment Variables

• MR_DOWNLOAD_DIR where videos are saved. Defaults to /download
• MR_PROXY will pass the value to yt-dlp with the --proxy argument. Defaults to empty

File Structure

After downloading videos, files are organized as follows:

/download/
├── <hash>/
│   └── <video-id>.mp4        # Video files
└── json/
    └── <video-id>.info.json   # Metadata files (separate folder)

API

To download a video directly, use the API endpoint:

/api/download?url=SOME_URL

Create a bookmarklet, allowing one click downloads (From a PC):

javascript:(location.href="http://127.0.0.1:9292/fetch?url="+encodeURIComponent(location.href));

Integrating with mobile

After you have your server up, install this shortcut. Update the endpoint to your server address by editing the shortcut before running it.

https://www.icloud.com/shortcuts/d3b05b78eb434496ab28dd91e1c79615

Unraid

media-roller is available in Unraid and can be found on the "Apps" tab by searching its name.