Go Back  DVD Talk Forum > General Discussions > Tech Talk
Reload this Page >

Question regarding re-encoding flac HD audio

Tech Talk Discuss PC Hardware, Software, Internet and Other Technology

Question regarding re-encoding flac HD audio

Old 05-13-18, 01:05 AM
  #1  
DVD Talk Platinum Edition
Thread Starter
 
JZ1276's Avatar
 
Join Date: Aug 2004
Location: Long Island
Posts: 3,687
Likes: 0
Received 1 Like on 1 Post
Question regarding re-encoding flac HD audio

I understand flac is lossless, but if a 96000Hz audio file is re-encoded using a smaller value such as 48000Hz or 441000Hz wouldn't some data be lost? I have a lot of DVD-Audio discs that are 24 bit/96kHz that I plan to re-encode using flac but want to make sure I have the correct settings to achieve a lossless file. Thanks!
Old 05-13-18, 09:09 AM
  #2  
Dan
DVD Talk Legend
 
Dan's Avatar
 
Join Date: Feb 2005
Location: In the straps of boots
Posts: 23,411
Received 252 Likes on 185 Posts
Re: Question regarding re-encoding flac HD audio

96kHz is the sample rate while 24 is the number of bits per sample.
So if you re-encode it by reducing either the sample rate or bit rate, yes, it's technically a lossier version of the same track. Whether it's noticeable is another story... All else being equal, I don't think most people can hear a difference between 96kHz and 48kHz... But if you're going for an exact copy of the original audio, then keeping it set to 96/24 is the way to go.
Old 05-13-18, 04:50 PM
  #3  
DVD Talk Ultimate Edition
 
Join Date: Oct 2003
Posts: 4,641
Received 128 Likes on 94 Posts
Re: Question regarding re-encoding flac HD audio

I can't hear a difference between FLAC 96 / 24 and FLAC 48 or 44.1 / 16. The filesizes of FLAC 96 / 24 are about 10x the size of the 44.1 / 16 ones, so it's a huge savings with an imperceptible loss in quality.

But, I *can* hear an incredible difference betwen FLAC 44.1 / 16 and mp3 320 kbps. Lossy mp3 sounds like garbage compared to lossless FLAC.
Old 05-13-18, 07:24 PM
  #4  
DVD Talk Limited Edition
 
Join Date: Feb 2000
Location: Sunny Hawaii
Posts: 6,942
Received 58 Likes on 38 Posts
Re: Question regarding re-encoding flac HD audio

Originally Posted by JZ1276 View Post
I understand flac is lossless, but if a 96000Hz audio file is re-encoded using a smaller value such as 48000Hz or 441000Hz wouldn't some data be lost?
Yes, that's right. Usually, you would just leave the FLAC encoder's settings at Auto, and it would preserve the original file's same bit depth and sample rate.
Old 05-13-18, 11:14 PM
  #5  
DVD Talk Platinum Edition
Thread Starter
 
JZ1276's Avatar
 
Join Date: Aug 2004
Location: Long Island
Posts: 3,687
Likes: 0
Received 1 Like on 1 Post
Re: Question regarding re-encoding flac HD audio

thanks guys
Old 05-19-18, 06:12 PM
  #6  
DVD Talk Special Edition
 
Join Date: Mar 2005
Location: Illinois
Posts: 1,537
Received 10 Likes on 8 Posts
Re: Question regarding re-encoding flac HD audio

The real question is WHY. You have dvd audio why the hell would you reencode it to something lower, it's the whole point of why you had dvd audio in the first place. Just leave it high res when you rip it.

And I don't know why one guys post asking question about reencode was locked while this one asking info about ripping dvd audio isn't.
Old 05-20-18, 03:03 PM
  #7  
DVD Talk Platinum Edition
Thread Starter
 
JZ1276's Avatar
 
Join Date: Aug 2004
Location: Long Island
Posts: 3,687
Likes: 0
Received 1 Like on 1 Post
Re: Question regarding re-encoding flac HD audio

Originally Posted by hdtv00 View Post
The real question is WHY. You have dvd audio why the hell would you reencode it to something lower, it's the whole point of why you had dvd audio in the first place. Just leave it high res when you rip it.
I'm not looking to reencode to lower quality. I'm looking to reencode without losing any quality.


Originally Posted by hdtv00 View Post
And I don't know why one guys post asking question about reencode was locked while this one asking info about ripping dvd audio isn't.
I'm not asking for help or instructions on how to rip/encode. I'm asking a general question about quality loss when encoding to flac.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.