[Mac OS X] MuseScore can't open LAME library for MP3 export
(This is a more precise issue posting for #42331: Error: Could not open MP3 encoding library!).
So! I'm going to be as specific as possible about each step of the process I'm going through, to try to eliminate any ambiguity. For this test, I'm using a 2009 MacBook running Mac OS X 10.9.5.
I started by booting into my Mac's recovery partition and repairing my startup disk, just because people were telling me there must be something wrong with my installation. This task accomplished, I rebooted and deleted my current installation of the LAME MP3 library from my computer. I then downloaded it afresh (version 3.98.2) from http://lame.buanzo.org/#lameosxdl and, in this case, used the ZIP archive. (In previous tests I have used the Installer package which, according to Pacifist, places the .dylib in /usr/local/lib/audacity. This, however, is a folder that requires root permissions to even see into, which I do not have enabled. In order to be sure I know the library is there, I chose to extract the archive and leave it in ~/Downloads/Lame_Library_v3.98.2_for_Audacity_on_OSX.)
At the same time, I downloaded the latest MuseScore nightly build (2015-02-06-2202-b9e10df), replaced the slightly older version in my /Applications folder, and from the Terminal ran /Applications/MuseScoreNightly.app/Contents/MacOS/mscore -F, quitting the nightly to complete the process.
Everything's set to go. I relaunch MuseScoreNightly and just use the My_First_Score that automatically opens. I enter a few notes, go to the File menu and choose Export… . Up comes the window where I can choose what format and what location I want to save to. I go with the default location and choose "MP3 Audio (*.mp3)" from the dropdown menu as my file format.
A dialog appears:
I click "Yes."
Exactly as with Audacity, the window appears where you can browse or search for libmp3lame.dylib. Once it's found and selected, I click "Open." (Note: I'm not posting a screenshot of this because personal information would be visible.)
And then we hit a dead end.
Now what?
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Comments
I can reproduce this behavior.
The error is:
Loading LAME from /Users/antonio/Desktop/Lame_Library_v3.98.2_for_Audacity_on_OSX/libmp3lame.dylib
load failed <Cannot load library /Users/antonio/Desktop/Lame_Library_v3.98.2_for_Audacity_on_OSX/libmp3lame.dylib: (dlopen(/Users/antonio/Desktop/Lame_Library_v3.98.2_for_Audacity_on_OSX/libmp3lame.dylib, 5): no suitable image found. Did find:
/Users/antonio/Desktop/Lame_Library_v3.98.2_for_Audacity_on_OSX/libmp3lame.dylib: no matching architecture in universal wrapper)>
Failed to locate LAME library
Could not open MP3 encoding library!
Here are the properties of that library:
$ file libmp3lame.dylib
libmp3lame.dylib: Mach-O universal binary with 2 architectures: [ppc: Mach-O ppc dynamically linked shared library] [i386]
The problem could be the fact that the library is a 32bit library.
@ZackTheCardshark:
Have you tried with a different build of LAME?
For example, I found these (but not checked them yet):
http://www.rarewares.org/mp3-lame-bundle.php
Indeed, i managed to make mp3 export work by using a 64bit library of LAME.
I found it here:
http://www.thalictrum.com/nl/products/lame.html
Note that you can avoid installing the full package by recursively opening the pkg archive with an unzipping program. The library you need is here:
lame-3.99.5.pkg\root.pkg\Payload\Payload~\lib\libmp3lame.0.0.0.dylib
and you have to rename libmp3lame.0.0.0.dylib to libmp3lame.dylib (the libmp3lame.dylib file in the lib folder is just a link to the actual library).
Guess we'd need to get this into http://musescore.org/en/node/36111#mp3
Yes! It works. Thank you, thank you, thank you. I feel like you ought to get some kind of award for heroism, or something. You certainly saved the day.
@Jojo-Schmitz, I just updated that page of the manual.
Thanks. Guess we can close this issue here then...
Right. Sorry I forgot that…
No, wait. There's still a loose thread hanging. That dialog shown in the first screenshot above should say something about "For details on how to obtain a version of LAME that will work with MuseScore for Mac, see [http://musescore.org/en/node/36111#mp3](File format) in the online manual." Or better yet, just put a Help button in there that links to the page.
By the way, does anybody else see something weird about the line breaks in that dialog box?
I'll fix the line breaks and add a "(for details check the handbook)"
See https://github.com/musescore/MuseScore/pull/1721
Solved a similar problem using Windows 8.1 platform - In File/Save As select 'save as wav' and save to folder - convert wav file to MP3 using online converter < www.media.io > may well work on Mac too.
Solved a similar problem using Windows 8.1 platform - In File/Save As select 'save as wav' and save to folder - convert wav file to MP3 using online converter < www.media.io > may well work on Mac too.
Or use [[nodetitle:online-convert.com]] , or VLC, as I suggested at #42331: Error: Could not open MP3 encoding library!. But what's the problem on Windows 8?
Only just found Musescore and getting to understand it but with no apparent export option and not finding anything in the handbook re creating music soundfiles I went to the forum and gleaned sufficient info comfirming that it could be done so went back and tried the 'save as' sequence. Just seemed simpler than trying to use Lame. Cheers
Ah, I see. A small matter of confusion here—MP3 export isn't even an option in MuseScore 1.x, so no wonder you had a "problem" with that! What we're discussing here, involving the use of LAME, is regarding the not-yet-released MuseScore 2.0, where MP3 export is one of the new features.
Since you're new to MuseScore, rather than learn everything twice, you might want to get in on the ground floor with 2.0. You can download it from http://prereleases.musescore.org/windows/nightly/. (One change of significance: there's an "Export" option under the File menu.) MP3 export should be working just fine for you there.
Thanks for the info - hopefully my LAME for audacity will be recognised.
Cheers
If not, you know where to come to report it. ;-)
I'm still having trouble. I'm new. Downloaded the little package from that link, on a Mac, but Installer says Couldn't open "lame-3.99.5.pkg". So I can't get to the file I need for MuseScore. Help?
@manicpixie which mac os x are you on?
check http://musescore.org/en/node/46801#comment-215091 again?
Automatically closed -- issue fixed for 2 weeks with no activity.
Issue fixed except the link to the supposedly good code in post 3 is dead.
http://thalictrum.com/en/products/lame is not dead for me?
Neither is http://musescore.org/en/node/36111#mp3 (or https://musescore.org/en/handbook/file-formats-0#mp3)
Pardon me, I mean the link in post #2, which is quite useless to this machine.
I did, however, take some of the time that I should be using to practice and follow thru another link on this thread, where I did find a download, which I took more valuable practice time to try to install, unsuccessfully. There is no libmp3lame.dylib in the package.
You've seen the hint "note that it is necessary to rename the file to libmp3lame.dylib for MuseScore to recognize it" haven't you?
osx homebrew users just need to run
brew install lameand you're good for mp3 export....Thanks, I've added this hint to the handbook
In reply to #2 by ABL
Please elaborate. I tried the original (32-bit) LAME library and got the same error as posted above. So I downloaded 3.99.5 from Thalictrum and installed the entire package because StuffIt Expander refused to open the package (security settings wouldn't permit it). So, according to Thalictrum's web page, the installer put the library that I need into a directory that can't be accessed from the Finder. Not being a computer scientist, I don't know how to get access to that file, how to rename it, or where to put it so MuseScore can find it. Please provide step-by-step instructions.
Trust me, for Mac OS X 64 bit just check this out: http://nuclearpixel.com/blog/2010-03-20_lame_3.98.3_universal_for_mac_o…
I've tried and works.
Great.. no reason to start changing all properties of this closed issue though.