Simple Server

Python simple video encoding server. Uses Flask, SQLAlchemy, FFmpeg.

Setup

You need to have FFmpeg binary installed. Python script makes a video storage directories if they don't exist.
Also, the videos.db database will be generated. If there are problems with it, run database.py first.

For Debian-based derivatives you can run these commands:

sudo apt-get -y install ffmpeg

pip3 install --upgrade pip
pip3 install flask
pip3 install sqlalchemy

Also Docker container included. Sample commands to use it:

docker build -t video-server .
docker run -it -d -p 5000:5000 video-server

Running

Just run ./server.py in Unix terminal. Or execute python3 server.py command.
The server runs on http://0.0.0.0:5000/ address. If you want to stop it, press Ctrl + C.

File Uploading

You can upload a video file of $ALLOWED_EXTENSIONS with POST request via web form or external tools like Postman, Fiddler etc.
The other way is to run next Bash command (you should use same syntax):
curl -F 'file=@{yourfilename.mp4}' 0.0.0.0:5000/upload_input_content.

Playing encoded file

You can play encrypted video with ffplay command like
ffplay SampleVideo_encrypted.mp4 -decryption_key 76a6c65c5ea762046bd749a2e632ccbb.
Future plans: add web player directly in a browser (/templates/player.html file)

Endpoints

• GET, POST / - main web form. Visit http://0.0.0.0:5000/ address in browser.

• POST /upload, /upload_input_content - upload a video file with extension of $ALLOWED_EXTENSIONS.
  You can also do it via web form. Sample Bash command (or you can use tools like Postman, Fiddler etc.):
  curl -F 'file=@{yourfilename.mp4}' 0.0.0.0:5000/upload_input_content.

• GET /download/<int:content_id> - download encoded file.

• GET /play/<int:content_id> - play encoded video in a browser player (TBD with Shaka Player).

• POST /packaged_content - encode previously uploaded video. Need to send JSON data with {id, key, kid} in request. Sample:
  curl -X POST -H "Content-Type: application/json" -d '{"id":1, "key":"76a6c65c5ea762046bd749a2e632ccbb", "kid":"a7e61c373e219033c21091fa607bf3b8"}' 0.0.0.0:5000/packaged_content .

• GET /allUploaded - list of all uploaded videos.

• GET /allEncoded - list of all encoded videos.

Next

FFmpeg encryption uses only cenc-aes-ctr scheme, so, for CBCs it's possible to use another tools like Bento4 or Shaka Packager. For playing encoded video it's possible to implement advanced video player like Google Shaka Player. For DASH encoding we need to split the video on chunks and generate a manifest file. And for different resolution support, we need to encode the uploaded file with lesser resolutions. It's possible to separate video and audio tracks and use only one audio track. It's also can be done to support different language tracks.
DASH Adaptive Streaming for HTML 5 Video