boomstream.com video downloader

The script downloads videos from boomstream.com streaming service.

Encryption algorithm description

The service stores video chunks encrypted using HLS AES-128 algorithm. In order to decrypt them AES initialization vector and 128-bit key are required. Initialization vector is encrypted in the first part of #EXT-X-MEDIA-READY variable which is contained in m3u8 playlist using a simple XOR operation. The key is supposed to be recevied via HTTP using a URL that starts with https://play.boomstream.com/api/process/ and contains a long hex key that can be computed using session token and the second part of #EXT-X-MEDIA-READY.

Usage

Command line arguments:

--entity (required) - value can be found in URL like https://play.boomstream.com/TiAR7aDs

--pin - required only for content protected with a pin code

--resolution - video resolution. If not specified, the video with a highest one will be downloaded

Excample:

--entity TiAR7aDs --pin 123-456-789 --resolution "640x360"

Requirements

• openssl
• curl
• python-requests
• lxml
• ffmpeg (for enconding ts -> mp4)

As the script was written and tested in Linux (specifically Ubuntu 18.04.4 LTS) it uses GNU/Linux cat tool to merge the video pieces into one single file. I think this is the only thing that prevents it from running in Windows. If you have time to make a PR to fix that I will really appreciate.