Music videos are typically made through a post-production process involving editing footage, adding visual effects and sound design. They serve to promote and market new songs, developing the artist's brand and star persona. Famous music video directors like Joseph Kahn create highly creative and artistic videos that help popularize songs. While average music video budgets range from $500 to $1250 per day of production, some large-budget videos like Britney Spears' "Toxic" cost over $1 million to produce. Audiences can now access music videos through various platforms like television, YouTube, social media and music downloads on services like iTunes.