I am editing a film that was shot on the Blackmagic (6K) and the footage will be given to me as an XML file and proxies. I was asked to provide a timeline codec and sequence settings. What would be the best settings that prevent least loss of aspect ratio. Also what should they keep in mind while making proxies. I have to give them an XML file of the final film – anything to keep in mind while exporting so they don’t have too much trouble reconnecting the raw files ?