As I was going through SimplexTech’s videos on YouTube, I’ve noticed that when I got to the video titled “Simplex 2001 Fire Alarm Test” (the video with Simplex 4050’s on 2903 light plates going off in march time), the video footage is different from what I originally saw. Yet, the audio is exactly the same and the alarm seen in the “new” footage is no different. What’s even weirder is that the thumbnail didn’t change, and the video is shorter (by 10 seconds). The run time (as seen in the bottom right corner of the thumbnail that links to the video from anywhere on YouTube) states that it’s 29 seconds long, however, with the new footage, it’s now 19 seconds long.
It may have changed a while back, but this is something that I’ve recently discovered. :?