The restoration process started with a search for still existing material. Bits and pieces were found under houses in Sydney, New South Wales, Australia and in the Pinewood Studios in London, England, UK.
According to the 'Oz Movies' website, ''a restored version [of 'Don Quixote' (1973)]'' was ''released on DVD in Region 4, relatively early in the digital era''.
The sound on the original was mono. This seemed unbelievable to the restoration team. However, it was established that even though the film had only ever played and been heard in mono, the film's actual sound and soundtrack were actually recorded in 'true' stereo. The DVD states: ''Using a dSP hard disk editing system, the original six track music was re-synchronized to the video.''
The foley artist / sound engineer, a former drummer, performed dance steps with his hands in a pair of shoes, during the sound effects re-recording process.
Sound effects re-recorded for the digitally restored version of the film included castanets, foot taps, door bangs, whip cracks, and finger clicks.