Convert FLAC to WMA or AAC?

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I was thinking of converting all my FLAC files. It's just that I'm not sure which setting is more efficient in preserving the original fidelity while remaining small in size:

AAC 320kbps
AAC 500kbps
WMA8 640kpps
WMA8 320kbps
WMA9.2 VBR

MP3 is not an option for obvious reasons. Sampling rate is set to 48KHz. I've never seen a 96KHz option in any audio converter. I don't know why, but I would like to see it implemented.

Reasons for converting: Free up more hard drive space (later I'm going to convert all my videos to H264 MP4 to save even more space) & support for Windows Media Player's Library (so OGG is out too).

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Personally I like to use SUPER Encoder http://www.erightsoft.com/SUPER.html
It will convert pritty much any format to any other format, both video and audio Smile

Oh and its freeware x]

Last edited by Delphium at 3 February, 2012 - 12:22.

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As far as i know AC 500Kbps is 1.5times bigger than 320 Kbps.
Now is the Question if AAC 320Kbps or WMA8 320Kbps is smaller. And how's the audio quality?
Don't you have an Audio Converter to try it and test it ?

I awlays thought FLAC is the smallest Lossles Audio.
Deadlock-Temple Of Love.flac --> 24Mb 1024Kbits
Deadlock-Temple Of Love.mp3--> 5.5Mb 244Kbits

So even Flac can't go against bits and bytes ^^ Lengt of Track * Kbits = Size

Don't know which Bitrate WMA9.2 VBR has... but if you find that out you know the file size Wink

But hey... i got my PC plugged to my HiFi setup, and i don't realy get any difference in quality from Flac to mp3.
Guess my Onboard Soundcard is the problem!

btw. When converting Videos to h264 use 10Bit !

One does not simply


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What are you listening to? And what are you listening on?

For what I listen too I want to stay FLAC and can because of the hardware I have. And because of what I listend to I can tell when lossy compression gets applied.

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AAC is good, don't go with WMA its not nearly as good nor as compatible (thinking of mobile devices) I have a bunch of ways to convert it.

You may just want to try the free demo of DB Poweramp and it can do all of it for you, if thats not your fancy I can make a tutorial on my manual method using MP3 Tag to do all my tags & cover art, NeroAACEnc.exe to do the actual encoding, FLAC.exe to do the decoding, etc.

AAC is about 2x better than MP3. So about same quality in half the file size, or double the quality in the same file size.

128kb/s MP3 sucks balls but 256kb/s AAC is actually pretty damn good for the same size.

Never encode in a constant bitrate anyways, use a variable bit rate or a quantitizer. It will give you smaller file sizes and higher quality throughout.

Last edited by ViciousXUSMC at 3 February, 2012 - 15:04.
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ViciousXUSMC wrote:
Never encode in a constant bitrate anyways, use a variable bit rate or a quantitizer. It will give you smaller file sizes and higher quality throughout.

This. And it's true for videos too. Don't ever do 2-pass encoding. Use a constant quality setting over a constant bitrate setting.

As for an encoder, iTunes has one of the best quality encoders for AAC.

A good alternative is neroaacenc. It's a command-line utility and only accepts wave as input but it produces good quality AAC files.

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Genre ranges from pop & rock music to orchestral (movie OST) tracks. I listen with Sony headphone with 40mm driver. I still use Realtek on-board audio, as I couldn't make up my mind whether to get an external sound card.

And why I shouldn't use 2-pass encoding?

quote=Haldi]Don't know which Bitrate WMA9.2 VBR has... but if you find that out you know the file size Wink

There's no option to set the bitrate at VBR mode.

Last edited by Emoz93 at 5 February, 2012 - 00:31.
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You shouldn't use two-pass because quality will suffer.

When using two-pass, you are telling it that you want to stay at a specific bitrate through the entire song. This means that it's going to cut the bitrate down in certain parts and raise it in others to meet the specified bitrate. While it will distribute bits decently throughout the song, it will still suffer in the end because not every part of the song is getting the bitrate that it needs.

When you use constant quality mode, the encoder will always target a specific quality, regardless of bit distributions. This is why two passes are not needed. It will be giving the same quality to every part of the song. The sound will be consistent.

The only time you ever really need to use two-pass encoding is when you are targeting a specific filesize. Even then, this is hardly needed anymore. Back when people would burn videos to CDs, you would need to target about 780MB or so. You can only reach that size by using two-pass mode. You will never know the final size of a file when using constant quality mode.

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BTW Dopefish is THE MAN

I consider myself to be one of the most knowledgeable video encoders out there, nobody I have run into be it professionals in editing, you-tubers, or anybody else uses techniques and processes nearly as advanced as I do, nor is there final product nearly as nice and I think 90% of what I know was handed down to me from Dopefish back in the day (mind you I compare myself to people that do what I do, not like the people that hang out on doom9 and can break down how programs like x264 work at the development level)

2 Pass is not actually going to cause loss of quality, if you were going to target a bitrate its a good thing to use it, but the point is that when using a quality setting (IE with NeroAAC -Q 0.5) that you don't really gain anything form using it and just add extra time to the encode for no reason.

For my music collection or movies I am fine using a quality setting, usually like 0.5 is fine for me produces AAC files in the upper 200kb/s range. For things like YouTube where I need to be a bit more direct with my target bitrate that is when I will use a variable bit rate setting between 128kb/s to 256kb/s depending on the type of recording it is.

AAC can do incredible things, as much as I like it as a high quality compressed format its even stronger in the department of reducing file size in extreme low bitrate settings where you want to make a file as small as possible. 64kb/s mp3 would sound worse than listening to your music through a tin can on a string but with a variable bitrate and HC AAC encoding it could give 256kb/s MP3 a run for its money at less than 1/4th the file size.

FLAC --> AAC is easy and make sense since FLAC is just a compressed WAV it easily decompresses back into a normal WAV and then NeroAAC can compress it into AAC for you.

Last edited by ViciousXUSMC at 6 February, 2012 - 06:46.

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