Other tricks I've seen:
* skip a 1-3 seconds every so often
* chop it into blocks and re-arrange them, so you watch out of order but still get the gist (1,2,3,4,5 becomes 1,3,2,5,4)
* skip a 1-3 seconds every so often
* chop it into blocks and re-arrange them, so you watch out of order but still get the gist (1,2,3,4,5 becomes 1,3,2,5,4)