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[Chris Depee]

When I use the conversion utility to convert a wav file to an mp3, the mp3, when played gives me the audio at 8 times the speed of the original wav file.  How, if at all, do I correct this?  And please don't say "Listen faster." 

[Alex B]

What is the format of the source wave file? Is it standard CD audio (44.1 kHz, 16-bit, stereo) or something else? What mp3 encoding settings did you use?

[Alex B]

I just remembered this thread about a similar issue: http://yabb.jriver.com/interact/index.php?topic=29944.0.

In that thread I explained a possible solution, which is a custom mp3 command line string.

The command lines in that thread work only with 22 Khz mono source files. I would need to get answers to my questions before I possibly could write a command line for you to try out.

[Chris Depee]

The wav file is 176KBps, 16 bit mono, 11Khz, PCM.

It was produced by converting a dss file from an Olympus digital recorder using the software associated with that recorder.

I tried to encode it as a 32K fixed rate mp3 (16KHz).

Don't know that much about this good stuff (yet).  Hope that's the info you need.

Thanks,

Chris

[madcap007]

Yes, I too am having the same problem: unable to convert wav to mp3.  I'm pretty sure I used to be able to do it using MJ, so I'm confused as to why I cannot now.  I've tried various levels of quality of wav, but to no avail.  Isn't this function part of what I paid for???  I appreciate the help that is coming in on this thread, but please don't assume we are all computer geeks.  I don't even know what a "command line" is, let alone know what to do with it.  Can't someone from JRiver tell us how to make the wav to mp3 conversion, without jumping through a lot of hoops?  After all, I paid my hard-earned money for this ability and I don't think I'm out of line in believing I should be able to do it without any trouble.  Thank you all for any help in this matter.

[KingSparta]

The wav file is 176KBps

That's not normal for a wave file

MJ did not deal with compressed wave files very good, they play but thats about it.

[madcap007]

I'm using plain old wav files that are uncompressed, and are generally 64, 88 or 96 kbps.  Yes, they play fine, but why can't I convert them to mp3?  I've tried converting the wav files to various levels of quality (8 bit, 16 bit, etc.) using the Sound Recorder that came with Win XP.  Nothing works.  When I play the mp3 that I've created, it sounds like insects chittering.  What's the deal?

By the way, if you are a moderator, does that mean you work for JRiver?  Can't we get some official answers?  This topic has been discussed at length before (as I have found out) but there doesn't seem to be any interest from the company who sold me this program to make it work right.

[Alex B]

The wav file is 176KBps, 16 bit mono, 11Khz, PCM.

Try this string in the custom MP3 command line dialog:

-b 32 -m m -s 11.025 --resample 11.025


If you need a higher sample rate mp3 file for compatibility reasons you can use the following values:

--resample n

where n = 11.025, 12, 16, 22.05, 24, 32, 44.1, 48

This would produce a 16 kHz mp3 file: -b 32 -m m -s 11.025 --resample 16
Keep in mind that this kind of resampling cannot improve audio quality.

[Alex B]

I appreciate the help that is coming in on this thread, but please don't assume we are all computer geeks. I don't even know what a "command line" is, let alone know what to do with it.

The default options should work fine with standard wave files that are ripped from audio CDs (44.1 kHz/16-bit/stereo). MJ has a custom mp3 encoding option for command line strings that can be used with other wave file types.

[madcap007]

THANK YOU ALEX B!!!  It works!  By "it works" I mean first, I converted the wav file to 44.1 kHz/16-bit/stereo, and then was able to convert it to mp3 format.  Thank you very much!!!  (Just a note to the other inexperienced users, like myself:  I used the "Sound Recorder" that came with Windows to convert the wav file from a lower quality to 44.1 kHz/16-bit/stereo.)  Thanks again!

[KingSparta]

44.1 kHz/16-bit/stereo

that would be normal

[Chris Depee]

Try this string in the custom MP3 command line dialog:

-b 32 -m m -s 11.025 --resample 11.025

Thanks for the advice ... but, where is it that I would use this command line?  Are we talking the "media editor" within Jukebox or somewhere within the "convert format" option in the Tools drop down ... or somewhere else?  Thanks.

[Alex B]

Thanks for the advice ... but, where is it that I would use this command line? Are we talking the "media editor" within Jukebox or somewhere within the "convert format" option in the Tools drop down ... or somewhere else? Thanks.

Tools > Convert Format > Options > Encoding > Encoder: MP3 Encoder, Quality: Custom > Advanced

[KingSparta]

would you not need:

%IN %OUT

[Alex B]

"%IN %OUT" is needed only with the "External Encoder" option. The standard MP3 encoder plug-in takes care of that automatically.

I actually installed MJ 8.0.400 quickly on one of my PCs and tested the command line with a 11.025 KHz mono wave file. It worked fine. That's how I was able to make the screenshot.

It seems that MJ does not get the correct input file sample rate automatically if the source file is something else than 44.1 kHz. The "-s 11.025" switch does the trick. (More information about the LAME command line switches is available e.g. here: http://lame.sourceforge.net/USAGE)

MC works differently (JRiver's newer product). A custom MP3 command line is not needed with source files that don't have a sample rate of 44.1 kHz. However, even with MC 11.1 a customized switch combination may produce better quality in special cases like this.

[KingSparta]

I see

I Finished a run of 27,000+ mp3s (or is it mp3's) conversion last night converting from a higher bit rate to 32kbps using:

%IN %OUT -b 32 -nopsy

the Source files were all different types

not sure what  "-nopsy" was but i think that was a default or something

[Alex B]

"-nopsy" was used for disabling the psychoacoustics model. It is not listed in the LAME documentation anymore.

[Chris Depee]

Tools > Convert Format > Options > Encoding > Encoder: MP3 Encoder, Quality: Custom > Advanced

Well, sir - I tried this, but when I get to the "Advanced" button and click on it, I am not presented with an option to enter a command line.  All I get is a drop-down with 3 "quality" options: "normal", "high speed" and "high quality".  I'm running MJ 8.0.400.

[Alex B]

Did you select "Quality: Custom" first?  (before pressing the Advanced button)