See 1 of each block All Videos page
Add a swf link in HTML4
http://s5.hotdoodle.com/formattest_2014_06/files/test_video/Test_Video2_SWF.swf
Watch it play
Set to html5, watch it play
set it back to html4. It should still play
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Do not upgrade FLV or swf files -- we have none in production