Re/code: Facebook will now give advertisers the option to pay for video ads after a user has watched for 10 seconds, significantly longer than the video views it charges for now. Unlike a regular video view, which Facebook counts after three seconds, the company currently charges advertisers for each impression a video ad gets, which means an advertisers is charged as soon as the video starts playing. Now an advertiser can choose which option — impression or 10-second view — they’d like to be charged for.