Hello
I've attached screen images with some settings. I'm editing with my footage connected via Firewire-800 on a Lacie 500gb drive, which never caused me problems (in fact it caused me joy, myself coming from a Windows background :)
I suppose the export settings in REDCINEX could be too high, but I've never had problems with exported footage. Of course I've never tried to do "proxy footage" replacement like in this case. And the reason why I am undergoing this footage replacement task is because I only realised after I finished editing that the source R3D footage would not be easy to color correct - or key out the green in this case - because they were not using the right color profile.
I tried flushing video cache, but it doesn't seem to do the trick, even though the cache is below 100mb anyway. I also have no problems with playback when the exported Quicktime Prores 422 footage is running with Quicktime Player.
Thanks again
Quicktime Movie Info (exported footage)
Red Movie Settings (source footage)
Red CINEX Export Settings (from source footage)
