Any image can be written as a string of binary numbers
and similarly with sound. In mp4 we can have both image
and sound.  Some of these sounds and images would be meaningful,
for example mozart's requiem as a video, or a nightly news

In principle any string of binary numbers can be created,
I suppose with a Turing machine. So I don't know how, but
in principle at least the digital mp4 strings of binary numbers
could be calculated with a Turing machine. The actual calculator
could also be a digital camera with a microphone turned on.

Would that not be a meaningful computation ?

Roger Clough, 
"Forever is a long time, especially near the end." -Woody Allen

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