Extracting length from Commons videos

This query is marked as a draft This query has been published by Isaac (WMF).

There are two types of img_metadata data formats: JSONs and PHP-serialized strings. This approach handles both.
The metadata keys/values depend on the media type (ogg, mpeg, or webm). This approach handles all three.

Data details: https://www.mediawiki.org/wiki/Manual:Image_table

SQL

SELECT img_name, img_metadata, JSON_EXTRACT(img_metadata, $.data.length) FROM image WHERE img_media_type = 'VIDEO' LIMIT 10

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