most compressed mp3

is there a website that will show how much mb a youtube audio(no video) will take with different compression settings? then depending on how much space is fine, then we can download the appropriate one..

thanks
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25112Asked:
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viki2000Commented:
There are many websites that can do the conversion but not all will show you indeed the end file size.
Important to know:
- for example http://www.video2mp3.net/index.php says (giving 2 options for standard and for high quality): "Not all videos can be converted using high-quality. This depends on the availability of a high-quality stream from the video service provider."
 Another one is this: http://ytconv.net/ , but is slow for high quality. Or http://snipmp3.com/

I was thinking:
- if you want to download only one mp3 or few, let's say under 10 songs, then why don't you just download standard and high-quality and then later in your pc just compare them: sound quality versus mp3 size file.
- if you want many mp3 to download, why don't you apply a different approach:

- use a software, a YouTube to mp3 downloader, grabber, converter. Then you set your values for mp3 and you see the size. It is just a matter of trying few files and the rest will be the same - assuming that the youtube file has the same quality.
- you can download the file as it is (flv, mp4) http://keepvid.com/  and then convert, extract mp3 in your wanted quality (limited by youtube file quality) as you want with a free software converter.

But in fact there are free software that you can install in PC and then download in mp3 and that is the best option for many youtube files - that is the best solution that I will choose. I remember that are also Firefox add-on that may help you to do that.
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viki2000Commented:
Few more words:
Online you can also use this http://www.youtube-grabber.com/ or http://www.makeitmp3.com/ but they do not show multiple qualities vs. sizes you want
A simple free software to download is http://www.4kdownload.com/ 
or http://www.freeyoutubetomp3converter.org/

In the second one (I am sure there are many other on internet) you may choose the mp3 settings - and from here the quality  and file size.

I do not think you can find a multiple conversion youtube file (at least estimated) online page, but you can search more.
As stand alone software in your PC I see it possible but I do not know one now (to estimate the end size file). A parallel conversion for multiple sizes does not make too much sense for somebody who makes such downloader, converter. You just download, see and the choose the desired mp3 setting for any further mp3s.

My approach for many mp3s would be 1) or 2) depending by what software you decide to use:
1) Test mp3 settings vs file size for several downloads of the youtube files - the batch download for all files that you need. This is direct youtube to mp3.
2) Batch (multiple) download of the youtube files in : mp3 or flv or whatever
- then the second step - batch convert the dowloaded files in mp3 with the desired mp3 setting vs file size after you test sveral files (similar with case 1) )

The 2) is a bit longer, 2 steps 2 programs, but gives you more flexibility, more software on the net.
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25112Author Commented:
very helpful - many thanks.
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