Complex sentence: Some reference sources cite that "Tate" was recorded on videotape, not done in the usual shot-on-film process that most non-live shows were; in fact, the series was filmed, as evidenced by quality DVD copies of episodes.
Split into simpler sentences: Some reference sources cite that "Tate" was recorded on videotape, not done in the usual shot-on-film process that most non-live shows were. In fact, the series was filmed, as evidenced by quality DVD copies of episodes.