Hi everyone. I have used cinelerra for several years and love the application, so thanks to all for the hard work. I recently started to edit 4K footage from a Canon 1DX Mk 2. This is obviously very slow even with a six core processor. So I am required to use proxy files to speed things up. This worked with fedora 28. However I have changed to Centos 7.5 and now have an issue, the proxy files when dropped into the viewer are very small only taking up a small part of the window. I cannot find a way to resize these to fill the viewer window. This did not happen on fedora 28. I set the >settins >format to the resolution of the original video, then the >settings >Proxy settings to use scaler, 1/3rd size, FFMPEG Mp4 and auto proxy/scale media loads. I then import the video and drag the newly created proxy file into the viewer where it sits at a third size in the centre of the viewer window. Any suggestions welcome. Cinelerra 5.1 built jul 31st 2018 06:59:29 Regards Phil Evans