Affordable drones shooting 4k video in the H264 format are becoming commonpalce. I’m currently using a DJI Phantom 4 Pro with the new H265 (HEVC) codec capturing on a 1″ sensor. The quality is suberb. Ranges of 5000 metres are possible but commercial use of this drone requires holding a CASA licence. For legal reasons I do not offer my footage commercially, nor can I fly beyond ‘line of sight’. When I gain a CASA licence, which is expensive and entails a one week course,  this will change.