Offensive video maybe about a band of electricians? (10,4)
I believe the answer is:
insulating tape
'a band of electricians?' is the definition.
(tape or band used by electricians)
'offensive video maybe about' is the wordplay.
I cannot quite see how this works, but
'video' could be 'tape' (I've seen this in another clue) and 'tape' is found in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is located in the answer.
'offensive' could be 'insulting' (similar in meaning) and 'insulting' is located in the remaining letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for insulating tape that I've seen before include "binder?" , "Wrap for exposed electric wires" , "sticky strip" .)