Writing hi res music files DVD

You basically don't need to worry about this. ISO9660 is the spec for optical media; all CD/DVD authoring apps support it. And, technically, while UDF is the spec for DVDs, UDF is just an offshoot of ISO9660. What I think Denon was actually trying to say is that if you use /R or /RW media you must burn & close a single session, not create a multisession disk. Writing & closing a single session is the default when you burn a CD or DVD; you would normally have to enable a multisession write in order to not close the disk.

The bigger question is ... are you expecting to create SACD disks (audio 5.1) or just write audio files (MP3, AIFF, FLAC, etc) to DVD media? Your Denon player can handle both, but they are different and I do not know of any consumer-level apps that can produce SACDs.

And a further question is how are you going to obtain/produce your hi res audio files in the first place? Toast, for example, supports hi res audio but if the source audio isn't already hi res to begin with, no conversion to hi res is going to improve the audio and may in fact degrade it.

I don't know what the default format is for DVD data. I think it creates a hybrid disc. The command line utility hdiutil can be used to create an iso9660 image which could then be burned.

You can also burn an image to iso9660 with drutil.

I have used a third-party burning app called Burn. I see it is still in the App Store and claims it can write ISO9660.

I have not used it since the last time I burned a disc which might be measured in decades.

ISO 9660 is one of the different types of file systems that you can use on optical discs.

https://en.m.wikipedia.org/wiki/ISO_9660

The manual is saying you have to use that file system - not some other one, like UDF - if you want your player to read your discs properly.

Before you consider buying Toast or Dragon Burn, you could burn a DVD-R or two (data DVDs containing music files) and seeing if your Denon player accepts them.

bzawa wrote:

Thank you for your response. So writing a disc using iTunes creates an ISO9660 formated disc?

I have no idea. The info for the disk only indicates it's a music CD or DVD, No ISO info at all. Try one and see if it works. I'd burn at the slowest speed available so to help assure the best possible burn.

See:

How do you write a CD to ISO9660 ? - Apple Community

You might need a third-party burning application (like Toast) to do what you want on a DVD. That is, if Toast offers this feature.

I don't ever remember being able to select formats for CDs/DVDs. To burn a music CD/DVD use the Music or iTunes app depending on what you have. Put the songs you want into a playlist and burn that playlist to CD.

This is want the Finder's Get Info says about an audio CD that was burned with iTunes:

And this is what Disk Utility shows:

If you use the Finder to burn the disc it probably won't be in the right format for an audio disc, but a data disk.

I didn’t say that.

I believe for DVDs, UDF is the usual file system. DVD-Video and DVD-Audio discs have a UDF file system with a particular file structure layered on top of that.

You're welcome.