If you are unable to open an MP4 file on our media player, try changing the video format. There are many good video converters available on the internet that can help you convert your MP4 to MP3, AVI, ...
XDA Developers on MSN
I stopped wasting time and money on file converters after finding this single open-source tool
This is the most important reason why I switched to ConvertX and ditched web-based alternatives. The core issue with every ...
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