Apple has announced the availability of searchable transcripts for its World Wide Developer Conference session videos. WWDC was held in June.
Apple says you can “take advantage of transcripts to quickly discover and share information presented in WWDC18 videos.” You can search by keyword, see all instances where the keyword is mentioned in the video, go straight to the time it was mentioned, and even share a link to that specific time.
To access the transcripts, you need an Apple Developer Connection account.