3 ms·

I'd like to detect commercials and reduce volume to 50%. Possible?

• Jun8 15y ago
  Detection of TV commercials using video analysis is now considered an almost solved problem, which systems having a high rate accuracy. However, you won't be able to such a thing using an Arduino (the BeagleBoard may be an option). If you want a simpler solution, a better way to detect commercials than trying to analyze CC info, I think, would be to check the average loudness. See this article: http://www.msnbc.msn.com/id/17229281/ns/business-consumer_news/t/why-are-tv-commercials-louder-show/ http://www.msnbc.msn.com/id/17229281/ns/business-consumer_ne..., basically what it says is that commercials seem louder but are actually not (because they are not allowed to). The peak level is the same as normal programs but the average audio level is way higher. This should be easy top detect.
  • pbhjpbhj 15y ago
    >commercials seem louder but are actually not (because they are not allowed to) // The UK Advertising Standards Authority recently took action saying they had proven that TV ads were being amplified above general volume levels - http://www.dailymail.co.uk/tvshowbiz/article-1251583/ITV-finally-censured-turning-volume-ads-annoyance-millions.html http://www.dailymail.co.uk/tvshowbiz/article-1251583/ITV-fin... (not the best source but good enough here). US Congress voted in the CALM Act, http://usgovinfo.about.com/b/2010/12/20/obama-signs-tv-commercial-volume-law.htm http://usgovinfo.about.com/b/2010/12/20/obama-signs-tv-comme... to curb excessively loud TV ads.
• nitrogen 15y ago
  You could modify MythTV's commercial detection to reduce the audio instead of skipping commercials entirely. Unfortunately commercial detection in MythTV is a non-realtime post-processing step.