News for hackers. Stuff that matters.

A comment on Designing an audio adblocker. Parent comment

Re:Designing an audio adblocker by joshfriend on Tuesday January 08, 2019 @03:15PM (#18859212)
That's a great idea if the injected ads are exactly the same length and always get put in the same place. If you have a 30 second ad in one download and 40s in another, 10 seconds of legitimate podcast audio gets interpreted as an advertisement.
[ Parent | on HN ]
Re:Designing an audio adblocker by jldugger on Tuesday January 08, 2019 @03:33PM (#18859372)
It works even if they don't, you just need a more intense algorithm to do similarity matching across all offsets.
[ Parent | on HN ]
Re:Designing an audio adblocker by dest on Tuesday January 08, 2019 @04:11PM (#18859733)
With maximally repeated sequences, you can https://ieeexplore.ieee.org/abstract/document/6012115
[ Parent | on HN ]
Re:Designing an audio adblocker by pavel_lishin on Tuesday January 08, 2019 @04:33PM (#18859937)
You "just" need to find all the common segments between different downloads; those are very likely to be the actual content, and not differing ads. Naturally this doesn't work very well if the pool of ads is low and you get repeats.
[ Parent | on HN ]