Remove HD Audio question

kelson

I've just started working with the Fab BluRay module. My sole interest is in ripping the main title of my BD disks, with no compression, to an .ISO and loading it to my NAS for playback on my media player(s). So far, DVDFab Decrypter seems to work extremely well in that regard.

My question: What exactly does the checkbox "Remove HD Audio" do? Does it simply convert the DD TrueHD or DTS MasterAudio into DVD-grade DD/5.1 (or DTS/5.1)? Or, does it do something else.

It would be nice if it converted the HD audio into conventional DVD audio. Most media players do not pass high bitrate HD audio to an AVR and can have problems converting it to DD/5.1 on the fly.

IPopov50

[QUOTE=kelson;44844]
My question: What exactly does the checkbox "Remove HD Audio" do? Does it simply convert the DD TrueHD or DTS MasterAudio into DVD-grade DD/5.1 (or DTS/5.1)? Or, does it do something else.[/QUOTE]

Yes, "Remove HD Audio" mean exactly just that. For instance DTS HD MA contains DTS core (usually 1510 kbps) and HD overhead. DVDFab, if HD removal selected, removing HD overhead leaving just a core.

It would be nice if it converted the HD audio into conventional DVD audio. Most media players do not pass high bitrate HD audio to an AVR and can have problems converting it to DD/5.1 on the fly.

I suppose, by "conventional DVD audio" you mean either AC3 or DTS audio that I mentioned above. Dolby format (AC3) usually comes with 3/2+1 channels 640 kbps, and DTS - with 5.1 channels and 1510-1536 kbps.

Oops, almost forgot to answer one more question.
Reasons for HD Audio removal are:
(a) saving a space - HD Audio stream, in average weight as much as 5 gig
(b) as you noticed, high bitrate creates difficulties in handling by most of the players and compatibility issues.

kelson

[QUOTE=IPopov50;44859]I suppose, by "conventional DVD audio" you mean either AC3 or DTS audio that I mentioned above. Dolby format (AC3) usually comes with 3/2+1 channels 640 kbps, and DTS - with 5.1 channels and 1510-1536 kbps.[/QUOTE]Thank you for the answer. Yes, that is exactly what I meant by "conventional DVD audio". I was asking does DVD Fab convert
DD TrueHD --> (AC3) DD/5.1
DTS HD MA --> DTS/5.1
when the remove HD audio box is checked.

And you have kindly answered, yes, that is exactly what it does.

I'm going to try this tonight with some rips and see if my media player behaves a little better.

IPopov50

I have to mention one more thing. Some of HD Audio streams mastered in MLP and/or other lossless formats used in DVD-Audio. These formats are not removable, nor convertible by DVDFab. If that happened and your player can't handle it, you have to perform "dance with tambourine" to convert it into a chewable format. But this is a topic for another thread when and if you encounter it.

[QUOTE=kelson;44862]Thank you for the answer. Yes, that is exactly what I meant by "conventional DVD audio". I was asking does DVD Fab convert
DD TrueHD --> (AC3) DD/5.1
DTS HD MA --> DTS/5.1
when the remove HD audio box is checked.

And you have kindly answered, yes, that is exactly what it does.

I'm going to try this tonight with some rips and see if my media player behaves a little better.[/QUOTE]

Racem22

Yeah for the DTS-HD MA track, it has a core DTS 5.1 track inside of it that it extracts and uses if it can't decode the MA track. The Dolby TrueHD track does not have that functionality though. Thats why when you get blu rays with the TrueHD track there is almost always an AC3/5.1 track along with it. Most blu rays lately appear to be sticking to the DTS track instead of Dolby I'm guessing because of that reason.

DharmaBummed69

Just read an article about this last week. That's exactly why most Blu-Rays are going with DTS-HD lately. Takes up less space than multiple Dolby soundtracks.