QUES: The video bank on YouTube contains our entire collection of filmed material from complete product films to company presentations

correct the punctuation.

CORRECTED: The video bank on YouTube contains our entire collection of filmed material, from complete product films to company presentations.

QUES: He was sent to a university in Edinburgh however was staying there something completely different than the Darwin had expected

correct the punctuation.

CORRECTED: He was sent to a university in Edinburgh, however, was staying there something completely different than the Darwin had expected.

QUES: Fast transfer of calibration data

correct the punctuation.

CORRECTED:
Fast transfer of calibration data.