It really depends on the scale and complexity of what is required. Taking a 5-minute commercial production as an example:

• Pre-production may take about 2 to 4 weeks which includes research, scriptwriting, casting and sourcing.
• Filming may take 3 to 5 days.
• Post-production editing may take 1 to 2 weeks before final delivery.

Setting aside 4 to 6 weeks from project confirmation to final delivery is highly recommended.