Watching instructional videos is difficult for me.
Video forces me to try to absorb information at a set pace. Before I finish processing sentence 3, the video has moved on to sentence 7. Guess I am too stupid for YouTube videos -- I just don’t have the bandwidth for it. Because you repeated the sequence, I was able to figure out what you are trying to demonstrate after seeing it the second or third time.
The title text for the clip "Test firing the Kodak Medalist..." can be seen only while my cursor is within the video box. It is easily missed, which leaves me asking, What am I looking at here, and why? I think the title text should be embedded in the video for a few seconds at the start, rather than depending on the video player to show it - or not.
For me, having text on the screen works better than a voiceover would. But, like watching a foreign language movie, that does require trying to read the subtitles and watch the action at the same time.
Sometimes video is superior to reading text. For example, presenting the shutter sound as audio is much more clear and efficient than trying to describe the sound.
Repeating the tricky parts is good for those of us who are on the slow side. There is the old adage,
Tell them what you are going to tell them,
then tell them,
then tell them what you told them.
In a video, this much repetition might be tiresome to some -- but if a text document, I can skim over what I already know, and re-read the tricky parts until I understand. For me, it is way too awkward to try to rewind video, or fast-forward through the boring bits -- doesn't work.
For step-by-step instructions, I wonder if some combination of text and video might offer the best of both worlds? That is, present the procedure written out in text, illustrated with still photos and video clips as necessary? But maybe that is what you are planning to do with this clip?