INTERACT FORUM

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Ripping CDs - Bitrate Degradation & File Format Questions  (Read 3528 times)

Talisker

  • Recent member
  • *
  • Posts: 38
Ripping CDs - Bitrate Degradation & File Format Questions
« on: January 28, 2014, 03:37:06 am »

I am in the middle of ripping some CD's. I have noticed that MC recognises the bitrate of the tracks on the disc as 1411 yet when I go to rip them it will degrade them to anywhere between, 826-1041.

1. Why is MC degrading the bitrate?

2. Can I choose FLAC/WAV output instead of APE?

3. What is the default rip speed? Can this be changed to ensure lossless conversion?
Logged

Hendrik

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 10786
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #1 on: January 28, 2014, 03:40:59 am »

If you rip to a compressed format like APE or FLAC, it'll reduce the bitrate, because thats what compression does. It will NOT alter the quality of the audio in any way, it'll just need less space to save them. FLAC and APE are both  "lossless" compressions, which means no quality is lost when compressing.

You can configure which format to encode rips to in the Options under Encoding, select "CD Ripping" in the "Encodind for" dropdown on top of the screen.
There is options for both FLAC or "Uncompressed Wave" (WAV)
Logged
~ nevcairiel
~ Author of LAV Filters

Talisker

  • Recent member
  • *
  • Posts: 38
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #2 on: January 28, 2014, 04:02:22 am »

Thanks for the info!

I was under the impression that bitrate is the quality? I have a track in my library with a bitrate of 3072. When I compare this with the usual bitrate of 1411 there is a significant difference in quality.
Logged

astromo

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 2239
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #3 on: January 28, 2014, 04:46:52 am »

Here's some relevant reading / background:
http://wiki.jriver.com/index.php/Lossless_Compression

http://en.wikipedia.org/wiki/Bitrate#Audio

That's just the tip of the iceberg .. enjoy ..  ;)
Logged
MC31, Win10 x64, HD-Plex H5 Gen2 Case, HD-Plex 400W Hi-Fi DC-ATX / AC-DC PSU, Gigabyte Z370 ULTRA Gaming 2.0 MoBo, Intel Core i7 8700 CPU, 4x8GB GSkill DDR4 RAM, Schiit Modi Multibit DAC, Freya Pre, Nelson Pass Aleph J DIY Clone, Ascension Timberwolf 8893BSRTL Speakers, BJC 5T00UP cables, DVB-T Tuner HDHR5-4DT

6233638

  • Regular Member
  • Citizen of the Universe
  • *****
  • Posts: 5353
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #4 on: January 28, 2014, 04:55:49 am »

I was under the impression that bitrate is the quality? I have a track in my library with a bitrate of 3072. When I compare this with the usual bitrate of 1411 there is a significant difference in quality.
Bitrate is file size divided by time.
 
If you are compressing the file (even losslessly) the size goes down, and so the bitrate is lower even if the audio is the same.
Logged

Talisker

  • Recent member
  • *
  • Posts: 38
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #5 on: January 28, 2014, 05:32:27 am »

Thanks for the info....

I guess it must be the "placebo" effect when I am almost certain that there is a significant difference between the 895 ape file compared to the 1411 wav file?

My ears do not often fool me  ?
Logged

AndrewFG

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 3392
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #6 on: January 28, 2014, 05:56:35 am »

Thanks for the info....

I guess it must be the "placebo" effect when I am almost certain that there is a significant difference between the 895 ape file compared to the 1411 wav file?

My ears do not often fool me  ?

You are not wrong!  

As the previous poster stated:  (bit rate) := (file size) / (duration) ...
but strictly it is (also) defined as:   (bit rate) := (sample rate) x (bit depth) x (channels) x (format compression factor)

For uncompressed lossless audio files like WAV and AIF the "format compression factor" is always 1.0 but for clever lossless formats like FLAC or ALAC the "format compression factor" is in a range of about 0.3 .. 1.0 depending on the source material.

So as a general rule -- assuming constant "format compression factor" -- the higher the bit rate, the better the quality...

Logged
Author of Whitebear Digital Media Renderer Analyser - http://www.whitebear.ch/dmra.htm
Author of Whitebear - http://www.whitebear.ch/mediaserver.htm

Talisker

  • Recent member
  • *
  • Posts: 38
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #7 on: January 28, 2014, 06:00:55 am »

Thanks Andrew!

For some reason I got lost in confusion when reading the links posted above about bit rate and lossless audio.

Your explanation is crystal clear!
Logged

JimH

  • Administrator
  • Citizen of the Universe
  • *****
  • Posts: 71653
  • Where did I put my teeth?
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #8 on: January 28, 2014, 07:20:01 am »

I guess it must be the "placebo" effect when I am almost certain that there is a significant difference between the 895 ape file compared to the 1411 wav file?
It isn't possible.  The digital to analog conversion process sees identical streams of bits from both.  Any lossless format will be identical to WAV at this stage.  So what you hear is identical.
Logged

Talisker

  • Recent member
  • *
  • Posts: 38
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #9 on: January 28, 2014, 12:41:36 pm »

One more question... The slower the Read speed the better?

http://puu.sh/6ByUq.png
Logged

Listener

  • MC Beta Team
  • Citizen of the Universe
  • *****
  • Posts: 1084
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #10 on: January 28, 2014, 02:04:45 pm »

One more question... The slower the Read speed the better?

http://puu.sh/6ByUq.png

Max speed works fine.  If MC says that a secure rip is successful, that's as good as it gets. 

You may find an occasional  CD that MC says it can't rip with confidence in the result.   Trying again at 4X speed is one thing to try in those rare cases.  However, ripping the problem CD with a different CD/DVD drive is more likely to give a successful secure rip.
 
Logged

Talisker

  • Recent member
  • *
  • Posts: 38
Re: Ripping CDs - Bitrate Degradation & File Format Questions
« Reply #11 on: January 28, 2014, 02:11:14 pm »

Great... thanks!
Logged
Pages: [1]   Go Up