问题 提问于 2015年5月5日
I have read everything, followed other fixes, downloaded and converted files and my videos are still black screen. I have .mp4 videos that I need to rotate, I used a google Nexus 5 phone and all I get is audio no video, I am not real computer literate,
but I can follow directions, I keep reading about codec, have no idea what it is but my video plays in media player. please help me this is very frustrating
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