2015-06-17 Learned about video formats by fetching all available formats of a Youtube video and running file(1), ffprobe(1) and mediainfo(1) on them. My opinion on WebM improved with my closer look at it. On the TUHS mailing list, Aharon Robbins pointed to a great paper by Kernighan and others. [0] Actually, it's two papers. -- A very worthwhile read! [1] Had the luck to read my mail at the right moment and thus was the first to show interest in the BSD4.4 manuals that Greg Lehey of- fered. :-) [0] http://minnie.tuhs.org/pipermail/tuhs/2015-June/004155.html [1] http://www.cs.princeton.edu/~bwk/202/ http://marmaro.de/lue/ markus schnalke