Reasons why a video can't be played on an Android device:

• The video's source could not be successfully downloaded.
• The video file's header could be missing or corrupted.
• There may be issues with the video or audio component's synchronization.
• It's possible that the file won't work with your Android phone or the media player you're using.
• It's possible that the SD card on which your video is stored has been corrupted as well
• f the video was shot on your phone, it's possible that certain modifications to the phone's settings or encoding rendered the video unsupported.

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