Thank you Zoe for your nice comments.
To be more accurate, I think this is "cinema". If Lumière's films are cinema, what I showed is is quite similar. I pointed out that some photographers on flickr were afraid, in many different ways, of the introduction of video, thinking that It would change their practices as photographers.
Expecting, in some ways, this anxiety, the administrators decided to limit the downloads to 90 seconds.
I should have mentionned sound. You are absolutely right in pointing its importance in Custom Built Summer.
The other one, Trying to Sleep, is silent.
All the best and thanks again for your great participation.