Complex sentence: Many documentaries and low budget films are shot on videotape or other digital video media instead of film stock, and completed as digital video, as it means substantially lower costs than 16mm or 35mm film production on all levels.
Split into simpler sentences: Many documentaries and low budget films are shot on videotape or other digital video media instead of film stock, and completed as digital video. Video production means substantially lower costs than 16mm or 35mm film production on all levels.