I have never heard of this being done but that may just mean it's uncommon in North America. I am curious what others have to say.
I did a few google search for ISO with some common industry keywords and did not get any good results, either.
Do you want to do this or is someone telling you to do this? I am trying to understand the broader objective or interest.
We are being asked to do this as part of a wider IT exercise to broadly classify all data (including CCTV live & recorded data) with the view to assessing risks and protecting the data in accordance with its classification.
There seems to be a myriad of best practice documentation out there in relation to CCTV, especially from the UK , which covers the protection of CCTV data.
BS 7958 gives recommendations for the operation and management of Closed circuit television (CCTV) within a controlled environment. It applies where data that might be offered as evidence is received, stored, reviewed or analyzed. It also applies to the monitoring of traffic regulations.