Hi, Shai,

That is interesting, I decided to research it a bit and there is a 2016 
thread on Gearslutz started by Jeff Willens


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:
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.



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
> [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
>> 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.

Richard L. Hess                   email: [log in to unmask]
Aurora, Ontario, Canada                             647 479 2800
Track Format - Speed - Equalization - Azimuth - Noise Reduction
Quality tape transfers -- even from hard-to-play tapes.