You cannot open a .003 file by itself; it is only a fragment of the data. Follow these steps to restore the original file:
Do you have the other parts of this file, or are you ? 7z.001 7z.002 7z.003 help please - SourceForge VID2016.7z.003
: Move all related files (e.g., .001 , .002 , .003 , etc.) into the same folder on your computer. You cannot open a