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#1
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Unrealistic Flac compression
Someone in the TSP/Zwan hub seeded a show today. They ripped it from a CD to a wav file and compressed it to level 8 flacs. The flac bitrates are ranging from high 200s to high 300s. This seems way to low of a bitrate for a flac. This seems more like an mp3 bitrate. When I mentioned this to him he reripped a track and flaced it and it did the same thing. He seeded a different show also today and did the same thing, but when he flaced it it did normal 600-900 kb/s bitrates. So does anyone have any clue why these bitrates are so low? Do you want frequency analysis pictures from eac/analfreq?
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#2
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Re: Unrealistic Flac compression
Well, the pictures would certainly help to tell the story, so I would grab a 1.5 to 2 second picture from the middle of a track (I think that is what Five usually asks for).
__________________
ABT Seeding Policy | ABT Seeding Guide | VBT Seeding Policy | VBT Seeding Guide Software Links HERE | FAQ is HERE | Technobabble forum is HERE. If your port number is in red, you are firewalled! How to Set Up Your Router (so you aren't firewalled) and How to Port Forward on Windows XP Five's Checksums Demystified - everything and anything you want to know about checksums
On a Mac? Get XLD to rip your CDs. Please see this guide - X Lossless Decoder (XLD): How to create flawless CD rips on Mac OS X No members have liked this post.
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#3
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Re: Unrealistic Flac compression
What kind of picture? A spectral analysis or a frequency analysis? EAC or analfreq or Cool Edit Pro 2.0?
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#4
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Re: Unrealistic Flac compression
I believe analfreq is the tool most are using these days. And we like to see both a spectral analysis and a frequency analysis.
__________________
ABT Seeding Policy | ABT Seeding Guide | VBT Seeding Policy | VBT Seeding Guide Software Links HERE | FAQ is HERE | Technobabble forum is HERE. If your port number is in red, you are firewalled! How to Set Up Your Router (so you aren't firewalled) and How to Port Forward on Windows XP Five's Checksums Demystified - everything and anything you want to know about checksums
On a Mac? Get XLD to rip your CDs. Please see this guide - X Lossless Decoder (XLD): How to create flawless CD rips on Mac OS X No members have liked this post.
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#5
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Re: Unrealistic Flac compression
That is quite low, but no need to assume mp3. If the source material is a mono signal, bitrates this low can indeed happen with FLAC. In fact, if you take audio and go FLAC > MP3 > FLAC, the chances are that the second file will have almost identical bitrate as the first one....compressing to lossy formats and then back don't change the compression much.
I'd still like to see a spectral anlysis and frequency sweep plot, but I'm going to venture a guess that it's mono lossless rather than mp3...
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Through the clouds, Throught the lies, We'll never see, What's never been, At the ending of life and the coming of death, Pass not through its gates but into the dark. No members have liked this post.
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#6
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Re: Unrealistic Flac compression
this is easy to solve. make md5 sums for the original WAV files, then decompress the FLACs you made in another folder and check if the decompressed WAVs (from your FLACs) are identical or not.
__________________
Checksums Demystified | ask for help in Technobabble thetradersden.org | ttd recommended free software/freeware webring shntool tlh eac foobar2000 spek audacity cdwave vlc Quote:
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#7
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Re: Unrealistic Flac compression
Frequency/spectral pictures.
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#8
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Re: Unrealistic Flac compression
I'm not really worried if its mp3, because mp3s wouldn't make a flac compress so much. The person who ripped the CD and I were both just very confused by why it is so compressed. The mono explanation would make sense though.
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#9
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Re: Unrealistic Flac compression
Quote:
Mods: maybe there should be a sticky about that? I don't think that problem is well known. No members have liked this post.
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#10
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Re: Unrealistic Flac compression
Quote:
__________________
Checksums Demystified | ask for help in Technobabble thetradersden.org | ttd recommended free software/freeware webring shntool tlh eac foobar2000 spek audacity cdwave vlc Quote:
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#11
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Re: Unrealistic Flac compression
Quote:
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#12
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Re: Unrealistic Flac compression
Yeah and that Anal Freq pic doesn't look too good.
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#13
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Re: Unrealistic Flac compression
Quote:
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#14
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Re: Unrealistic Flac compression
Cool Edit.
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#15
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Re: Unrealistic Flac compression
Quote:
looks pretty normal for a 60's or early 70's audience recording can also indicate noise reduction was used No members have liked this post.
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