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Re: detecting caption files?

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From: Jonathan Avila
Date: Jan 12, 2018 8:45AM

> >I can double check with Deque's engineers if aXe is programmed to examine 'inside' of MP4 files looking for a caption file, and if so, how, but I >also recall that YouTube also uses a proprietary time-stamp format for their captions, so if aXe is only looking for WebVTT or TTML >markup/time-stamp formats, it *might* be missing the proprietary format.
>(Just a guess at this time).

In my experience aXe core fails youtube videos for missing track elements even when the videos have captions. This is a situation where flagging a missing caption track is a potential violation that must be reviewed by a human or better automation is needed to inspect the encapsulated file or other new techniques need to be researched.

Jonathan