I am data managing on a job coming up, and have been instructed to transcode both MXF files from the C500 and AVCHD files from the FS700 to DNxHD MXF files. I have a macbook pro retina, but do not have Media Composer 6. I was able to download and install the DNxHD quicktime codecs, but cannot find the MXF codecs anywhere. Also, is there any 3rd party software that any of you have experience with that will get the job done? Thank you so much!