Weed out the BAD MP3's
Hi,
So many of the downloaded MP3's are of variable quality, due to many factors, one of which is the encoder used, a utility I have used for some time now is ENCSPOTwhich produces an Explorer like listing showing many features of each MP3 in any specific folder. Interested then try... http://www.guerillasoft.com/Encspot/ Sorry I'd post it as a link if I knew how... :shk: Snark. |
Re: Weed out the BAD MP3's
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Thanks!:tu: |
this is indeed very interesting...getting all this info on the mp3's you know and love is a little disconcerting - like finding your girlfriend's diary or something:hmm:
now I'll have to listen to some of the ones I've checked and see if the quality is as bad or as good as this little proggy says it is... |
OK I Know?
Yes, it makes you listen again, especially when you see the old Xing encoder shown, a notorious distortion device, but the new one seems OK..
Hi GR, off you go... tell us all about your bad ones eh? :SH: Snark. |
Re: OK I Know?
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I've burned mostly all my mp3's into a library so not much left to play with. I don't have a clue on how to interpret this data and I'm too lazy to do the print screen thingy. The qualities of all three are in the green. Here's some text though..... Pod_away's Enya (love that Enya) Enya - Only One Time [remix].mp3 -------------------------------- Bitrates: ---------------------------------------------------- 320 |||||||||||||||||||||||||||||||||||||||| 100.0% ---------------------------------------------------- Type : mpeg 1 layer III Bitrate : 320 Mode : stereo Frequency : 44100 Hz Frames : 13223 Length : 00:05:45 Max Reservoir : 0 Emphasis : none Scalefac : not used Complete : yes Encoder : Blade --[ EncSpot 1.0 ]--[ http://www.guerillasoft.com ]-- Here's that Pilot I dl'd off you on OpenNap: Pilot - Magic(256k).mp3 ----------------------- Bitrates: ---------------------------------------------------- 256 |||||||||||||||||||||||||||||||||||||||| 100.0% ---------------------------------------------------- Type : mpeg 1 layer III Bitrate : 256 Mode : stereo Frequency : 44100 Hz Frames : 7147 Length : 00:03:06 Max Reservoir : 125 Emphasis : none Scalefac : 12% Complete : yes Encoder : Lame --[ EncSpot 1.0 ]--[ http://www.guerillasoft.com ]-- Here's a Luther I ripped (CBR that is): Luther Vandross - Give Me The Reason.mp3 ---------------------------------------- Bitrates: ---------------------------------------------------- 192 |||||||||||||||||||||||||||||||||||||||| 100.0% ---------------------------------------------------- Type : mpeg 1 layer III Bitrate : 192 Mode : stereo Frequency : 44100 Hz Frames : 10925 Length : 00:04:45 Max Reservoir : 334 Emphasis : none Scalefac : 1% Complete : yes Encoder : FhG (fastenc or mp3enc) --[ EncSpot 1.0 ]--[ http://www.guerillasoft.com ]-- I KNOW you use Lame, Pod uses Blade and I use MMJB (7.0) :help: Cripes, almost forgot to mentioned that I had EncSpot all along......all I had to do was dust it off a bit <snicker> :doh: :PO: :PO: :BP: |
Redundant again?
Well What ARE you like?
Cripes, almost forgot to mentioned that I had EncSpot all along......all I had to do was dust it off a bit <snicker> Hey but you ahaed of me there, never bothered to print anything out before, well done Watch your post box... Snark.. :BB: |
Re: Weed out the BAD MP3's
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Fruhauf (fhg)was ok to good. bitrate was also a factor. |
Re: Re: Weed out the BAD MP3's
Thanks for the link, Snarkridden, a very nice utility! :tu: :AP:
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- tg ;) |
Doctoring?
Hi Tg,
I thought it was only Cats that got doctored? :J: I presume you mean since quality is NOW a trading factor, that some unscrupulous individuals will be decoding & re-encoding at a false higher bit rate? That should be easy to spot, by doing a FFR analysis of the spectrum, a genuine original will have the full spread, whereas the re-encoded one will be limited to the spectrum signiture of the original encoder. To the point about the "reds" in a previous post, Yes I noticed that too as typical of the old Xing encodes, but the new one is supposed to be a lot better, though the Blade was always better than the Xing, it was always terribly slow. I still reckon the fastest encoder is the FhG in AudioActive Pro. There was in the other thread on MP3 quality, a throwaway comment about Sound Forge and its handling of MP3, I cannot find that thread entry again, so if the original poster would identify themselves here, I'd be pleased to have some review information on this reported problem... Snark.. :RE: |
Re: Doctoring?
Hi Snark! :W:
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- tg ;) |
Forged MP3's
Hi Tg, :W:
I like the little wave... You know you have really spoiled things for me now, by saying that about trading factors, I supoose in my innocence I didn't think people would bother with such things, I shall now have to look very carefully at my Acoustic Alchemy and Ambrosia collections, built up over the year mostly at 320k sample rate. Strangely just recently a new CD appeared in the set, never found it before, then there it is complete all tracks at 320k, none at lower rates as you would expect from normal multi-sourcing, so looks like you could be right. On the other hand, what better way to discredit a source of good quality material, in the battle against sharing, could this be another example of the weapons of war? Will we ever find out... Back to the spectral analysis job on all the suspects... Snark.. :uu: |
Hi Snark! :W: (<---- this just to delight you!)
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Then there are also similarly sad cases of lost quality libraries - also brough about these handy bitrate conversion utilities. People have been happily reporting how they managed to make more room to their full HD by converting all their 'stuff' to 128 kbs... and afterwards they wonder why their old trading partners suddenly lose all interest in their library.... :uu: Quote:
The good news is that certain technical countermeasures can go a long way in ensuring the quality of p2p-distributed material. The basic idea (as I mentioned in this thread on P2P) is to have trusted sources publish unique signatures for their quality rips and to have p2p software to support the verification of these signatures. Similar measures would help to keep p2p-distributed software free from virii and other unpleasant additions. - tg ;) |
http://privatewww.essex.ac.uk/~djmrob/mp3decoders/
go to FaQ's and encoder ratings section. Then you will know! |
Interesting!
Thanks Mike,
Interesting site, and quite local to me too... Nice to know I have been using one of the best coders for a while now.. LAME. Snark..:att: P.S vers 3.91 is out now |
Snarkey...thanks for encspot...nice referral..great tool!
And you just can't beat Brit education when it comes right down to it. |
Just dl'ed this and going to use it soon. Thanks for the heads-up.
|
Hmmm...out of 75 files I have left (all were downloads), 31 were rated bad, and all bad were encoded with Xing or Blade. So...
bad overall - 31 of 75 - 41.333% bad Xing - 24 of 26 - 92.308% bad Blade - 7 of 10 - 70.000% bad FhG - 0 of 39 - 0.000% |
Jeesh!
I dare NOT tell you how my tests fared, but I know one thing, i'm sharing a lot less now than I was?
Standby for blasting over the re-encoding issue, when I can get my act together with all the FFR tests (pictures) I will post the results of some serious tests done with Acoustic Alchemy tracks downloaded from different sources, different users, compared to my own direct CD rips. Tg, you opened up a can of worms with your re-encoding post. Snark..:MAD: |
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