let me see if i got that right, are u saying that the officail version of madvr. dosn't do hdr. dynamic tone mapping? and that it's only available in the beta builds? im a kind of new user to madvr. but as far as i understand, is that the tone mapping in done frame by frame in madvr.Here is the latest released version of madVR:
There are test builds that are not meant to be used for anything more than to test HDR dynamic tone mapping with the hope that one day there will be a version of madVR with this capability. These change frequently with the focus changing on different aspects of tone mapping. They are not meant to be used for daily watching of regular content (unless you are doing so to test and provide feedback). This build has some tone curve brightness normalization so it is not ideal to use other than to test tone curves.