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I can not see the second video ,how to remove the background? ,the background is blackcolor,I try any ways ,but it is not work,I hope here can help .thank you

RIQ
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  • Where are you trying to merge your videos? Which program etc...? – Philip G Jan 26 '15 at 05:05
  • I want to remove the frist video's background,like this http://www.modejong.com/AVAnimator/examples.html#AVRender AVRender Example – RIQ Jan 26 '15 at 05:52
  • http://stackoverflow.com/questions/27390447/avassettrack-with-alpha-channel -----like this question – RIQ Jan 26 '15 at 05:58

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