How to know what command line was used with LAME mp3s?

2002-05-22 03:53:26

Hi,

Is there a utility that will allow me to know what command line was used for each LAME mp3?  I have a diverse collection of mp3's, many of which I can't remember what command line was used.  Is there a way to find out?  If so, please help me out.

mp3

How to know what command line was used with LAME mp3s?

Reply #1 – 2002-05-22 04:01:50

Well, this information isn't stored within most MP3, only Lame encodes. In other encodes it can't be retrieved nor guessed.

Besides, I think only newer versions of Lame store this info.

You can try to use EncSpot to GUESS which encoder was used to encode your MP3s. If it finds a Lame encoded file, it's probable it'll point out the switches used.

Regards;

Roberto.

How to know what command line was used with LAME mp3s?

Reply #2 – 2002-05-22 04:44:55

Yeah Lame tags have quite a lot of info, which you can look with EncSpot 2.
Of course your MP3s must have been made with pretty new Lame in order to Lame tags to exist.

How to know what command line was used with LAME mp3s?

Reply #3 – 2002-05-22 05:38:01

Even with the LAME tags and something like Encspot to read them, you have no way of knowing 100% what command line was used.  None of the --alt-preset stuff will show up there for example.  Due to the way the tag is designed, I'd be surprised if this information was ever implemented either.

How to know what command line was used with LAME mp3s?

Reply #4 – 2002-05-23 00:40:27

I think is possible to implement this feature in Lame.
I'm not a developer or programmer, but storing the info
about the encoding settings is viable and many users
would be very happy with this.

At the time of the encoding, Lame shows the choosen
bitrate, mp3 quality, etc...

This valuable info is not saved, but it is very important.

Even with my own encoded mp3s I miss what settings
were used...

Saving this info can be implemented as a optional switch
for the users who wants it(I do)!

My suggestion to Lame developers: Can the "comment" field
at Idv1 tags be used to store the command line and/or encoding parameters?

LIF

How to know what command line was used with LAME mp3s?

Reply #5 – 2002-05-23 02:30:47

In the case of putting it in your id3 comment tag, you can make seperate profiles for EAC (with your favorite common commandlines) and have each profile tell EAC what to put in the comment field which you can just put in the commandline you're using if it's short enough to fit.