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I'm trying to transfer video files to my phone, HTC Google Nexus One (Android 2.3.6), but with this strange behaviour:

  • After I copy file to the phone, when I'm opening it with computer it works ok.

  • After turning off USB mass storage, I open the video file with my phone's video players and it's not opening.

  • When I mount the phone to computer again and try to open it with the computer video players it again can't open.

I suppose that:

  • The problem is not with video encoding, since it can be opened the first time, from the PC.

  • It can be opened from the PC after I transfer it to the phone, so the problem is not with cable or transfer either.

The fact is, that after I unmount phone from my computer, the video crashes and can't be opened either by the phone or the PC!!!!

Can someone help me with this?

I will be very appreciated.

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migrated from Jun 28 '12 at 16:58

This question came from our site for professional and enthusiast programmers.

Video format might not be compatible with the phone's player. But if the PC can't play it either, you may have a corruption due to an incomplete write. Are you unmounting the phone from the host OS, then disabling mass storage on the phone itself, before pulling the cable? After a reconnection, using a tool like diff to check the version on the phone against the source version on the PC would be a good test. – Chris Stratton Jun 28 '12 at 15:38

This looks like a corrupted file. You most probably pulled the cable before everything was written to disk. Compare original and copied file by calculating both md5sums and see if they match:

Open office' site has a comprehensive guide how to do that on Windows and Linux (same on MacOS).

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I solved it by downloading ES File Explorer from the Play Store (it's free), then put the videos that won't copy in a ZIP file - which you copy to your Android device and extract them there.

I successfully played those videos using the VLC beta version.

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