Hi, Shai, That is interesting, I decided to research it a bit and there is a 2016 thread on Gearslutz started by Jeff Willens <https://www.gearslutz.com/board/music-computers/1086321-do-you-use-rf64.html> Someone named Michal provided some excellent discussion surrounding the RF64-W64-CAF question. The one thing that needs to be updated is that iZotope RX handles RF64 files -- at least I tried a 3 GB one from 2011 and it opened now. I was also able to open a 10 GB multichannel WAV in iZotope, though track mapping has been a bit of a challenge in that interface--it's more designed for surround processes. That thread points to a blogger essay by Bjorg from 2009: <http://blog.bjornroche.com/2009/11/wave64-vs-rf64-vs-caf.html> that might be of interest. This is not a new issue, actually. I think, in general, since the standardization of RF64 by EBU it makes more sense to use RF64 which, I believe, comes under the BWF umbrella. In my world, if RME, iZotope, and Samplitude support RF64, I am happy. Cheers, Richard On 2020-12-10 1:34 a.m., Shai Drori wrote: > Hi Richard > AFAIK W64 is widely accepted and used in all up to date computers and DAW, > I've been using it daily for a few months now without a single problem on > audition, wavelab, premiere pro, and Cubase. > > Cheers > Shai Drori > Expert digitization services for Audio Video > 3K scanning for film 8mm-35mm > Timeless Recordings Music Label > www.audiovideofilm.com > [log in to unmask] > > > > On Thu, Dec 10, 2020 at 12:34 AM Richard L. Hess <[log in to unmask]> > wrote: > >> Hi, Martin, >> >> It seems there are at least two ways to make large WAV files, and >> possibly three. >> >> (1) In the early 2000s, there was a format that Samplitude would use >> that made a WAV file and when that was full (2 GB, I believe), it made a >> W01 and then a W02 file, etc. These could be seamlessly used, but if one >> got lost... >> >> (2) According to a very thorough article at >> https://en.wikipedia.org/wiki/WAV the W64 format was created by >> Sound Forge (now Sony) with a 64 bit header. I don't know how widely >> that has been adapted. >> >> (3) since about 2010, programs have been adopting the RF64 and at least >> Samplitude would seamlessly transition from the WAV format to the RF64 >> format when needed. That created a few compatibility issues, but those >> seem to have vanished. Here is the Wikipedia article on RF64. Not as >> good as the WAV one, but it will give you the idea. >> https://en.wikipedia.org/wiki/RF64 >> >> -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Track Format - Speed - Equalization - Azimuth - Noise Reduction Quality tape transfers -- even from hard-to-play tapes.