update canvas size to selected video
update canvas size to selected video

xzf158/ogv.js,chrislearn/ogv.js,paladox/ogv.js,chrislearn/ogv.js,paladox/ogv.js,paladox/ogv.js,xzf158/ogv.js,chrislearn/ogv.js,xzf158/ogv.js,chrislearn/ogv.js,paladox/ogv.js,xzf158/ogv.js,chrislearn/ogv.js,paladox/ogv.js,xzf158/ogv.js