Export CRID in

[chrysn]

• I've verified and I assure that I'm running youtube-dl 2019.01.17
• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• N/A Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Feature request (request for a new functionality)

---

The ARDBetaMediathek, encoded in its URI paths, encodes information about the CRID of the provided media item. For example, Die Sendung mit der Maus contains Y3JpZDovL3dkci5kZS9CZWl0cmFnLTI1MDYwOThjLTJjNjEtNDJiZS05Mjc4LWUwNWEyNjFhMmM2NA in its path, which is base64-without-padding for crid://wdr.de/Beitrag-2506098c-2c61-42be-9278-e05a261a2c64.

The format of a CRID and its purpose are explained in RFC4078, and that those identifiers can be used to correlate downloaded episodes with other sources of information, eg. the checkeins metadata on the same episode.

Please consider exporting the CRID in a dedicated field in exported JSON files for backends on which that information is available (so far, I'm only aware of this on ARDBetaMediathek).