'huge' is a non specific value. Reply with a numerical value (or overall range of numerical values) followed by 'KB', 'MB', 'GB' or even 'TB' (yes, that is terabyte).
'video files' is a non specific term. Reply stating whether the video files are personally created, and name the specific source [DV recording device's manufacturer and model number, commercial DVD(s) - provide the actual name of the DVD(s), etc.]
The source of the copying action was not stated - 'Mac, PC, external storage device, etc. Provide specific name and model number. Also, if a computer - the operating system on it.
The destination of the copying action was not stated - 'Mac, PC, external storage device, etc. Provide specific name and model number. Also, if a computer - the operating system on it.