Four short links: 20 March 2012

jPlayer — jQuery plugin for audio and video in HTML5. Dual-licensed MIT and GPL.
Tesseract (Github) — Square has open sourced (Apache license) their Javascript library for filtering large multidimensional datasets in the browser. Tesseract supports extremely fast (<30ms) interaction with coordinated views, even with datasets containing a million or more records; we built it to power analytics for Square Register, allowing merchants to slice and dice their payment history fluidly.
QR Code Madness — I recently received an MMS (multimedia text message) with a picture to a QR code. First, it’s bad enough advertising agencies still randomly text people ads. Second, what am I supposed to scan that with? My eyes? But check out the photo for maximum silliness.
Galaxy Zoo: Crowdsourcing Citizen Scientists (Guardian) — yes, the headline is a collection of buzzwords but the Galaxy Zoo project remains fantastic. My eye was caught by Working 12 hours a day non-stop for a week, [Kevin] Schawinski had managed the not inconsiderable task of detailing the characteristics of 50,000 galaxies. He needed a pint. [… they built Galaxy Zoo in a day of two …] Within 24 hours of it being announced on Lintott’s website, Galaxy Zoo was receiving 70,000 classifications an hour. They still measure their hit-rate in “Kevin weeks” – a unit of 50,000. “Soon after that we were doing many Kevin weeks per hour,” Schawinski says. (via Roger Dennis)

jQuery Video Plugin, Open Source Data View, QR Insanity, and Measuring Citizen Science