The first efforts at video recording, using recorders similar to audio recorders with fixed heads, were unsuccessful. The first such demonstration of this technique was done by BCE on 11 November 1951. The result was a very poor picture. Another of the early efforts was the Vision Electronic Recording Apparatus, a high-speed multi-track machine developed by the BBC in 1952. This machine used a thin steel tape on a 21-inch (53.5 cm) reel traveling at over 200 inches (510 cm) per second. Despite 10 years of research and improvements, it was never widely used due to the immense length of tape required for each minute of recorded video.