Applies a partial update to a video's accessibility customizations. Only the fields supplied are changed; sending a field as null deletes it (reverting to the default).

Requires api token with one of the following permissions

Read, update & delete anything

Tokens with the "Act with a team member's permissions" permission (all:delegate_to_contact_permissions scope) can also be used. Requests made with such a token are authorized using the permissions of the contact assigned to the token.

An expiring access token created with the all:delegate_to_contact_permissions scope and an authorization granting the edit permission on this media can also be used.

{
  "captionsBackgroundColor": "000000",
  "captionsTextColor": "ffffff"
}