Shooter clocked in outskirts of Riga (6)
I believe the answer is:
camera
'shooter' is the definition.
(a camera shoots footage)
'clocked in outskirts of riga' is the wordplay.
'clocked in' becomes 'came' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'outskirts of' says to hollow out the word (remove centre letters).
'riga' with its centre removed is 'ra'.
'came'+'ra'='CAMERA'
Can you help me to learn more?
(Other definitions for camera that I've seen before include "Nullify" , "An image-capturing device" , "In - means in private" , "Picture taker" , "One never lies" .)