Audacity Forum

After making changes on my mp3 files,they are not saved.Even after trying different modes which are specified in the help files.Mostly I'm making changes like :normalising the volume ( db) ore cliks;

J Van Mol wrote:After making changes on my mp3 files,they are not saved.Even after trying different modes which are specified in the help files.Mostly I'm making changes like :normalising the volume ( db) ore cliks;

Why post this topic a second time? Have you read the answer to the first time you posted this topic
http://forum.audacityteam.org/viewtopic ... 16&t=58469 ?

Before posting, it may be an idea to ensure that "Notify me when a reply is posted" is checked.

If you are still on Vista, please use Audacity 1.3.13. You posted this to the 1.2 Forum.



Gale

I found a way to make it work,simply save the modified file to a new map instead of leaving it in the original map.It works every time,so far

J Van Mol wrote:I found a way to make it work,simply save the modified file to a new map instead of leaving it in the original map.It works every time,so far

Unfortunately, your original report was rather vague. I thought you meant that you were exporting an MP3 and that the volume changes you made were not respected in the exported MP3.

It now sounds as if you cannot export at all unless you copy and paste to a new project window (File > New). Is that what you mean? Or do you have to copy to a new track in the same window? If so, what format are exporting to? Are you using Audacity 1.3.13? (see Help > About Audacity).

If you are exporting to WAV, and the project contains an imported file like an MP3, it is possible that the track information embedded in the imported file will cause export to fail with an error "libsndfile says" or that a corrupt file will be exported. Is this the problem you are having? If so, can you upload an example of an imported file that causes this problem to http://www.yousendit.com (or some similar web space)?

If you are exporting to MP3 but the file is not exported at all, it could be a problem we don't know about. In that case please give us more details so we can look into the problem. If there is an error when exporting as MP3, what does the error say? Can you upload an example of an MP3 file that creates this export problem if you import it into Audacity?


Thanks,



Gale

The problem was what you said in your first line.After saving the file to the same folder the changes were not made.So I found the solution with saving it to new folder.I'm working with Audacity 1.3.13 and W Vista on a laptop HP 7000.So,for me I have no problem working the way I explained in the previous post.Thanks for your help

Moved to 1.3.x Board

J Van Mol wrote:The problem was what you said in your first line.After saving the file to the same folder the changes were not made.So I found the solution with saving it to new folder.I'm working with Audacity 1.3.13 and W Vista on a laptop HP 7000.So,for me I have no problem working the way I explained in the previous post.)

If there is a bug we would prefer to fix it, because other users may not have your patience.

But we cannot do so until we understand it. There should be no problem with overwriting the original MP3 so that the current content in the Audacity track replaces the content in the original MP3. Is that what you would like to do?

Especially if you export the MP3 at a very low bit rate, the volume in the exported MP3 will be usually be lower than in the Audacity track because MP3 encoding tends to discard higher frequencies as being less important for reproduction of the audio than lower frequencies. But this should not be affected by the folder you export to.

If you can give us steps to repeat the problem this would help. Here is an example showing the Audacity menu commands you used and the Options export settings for the MP3.

1 File > Import > Audio the MP3 - its peak volume is -10 dB
2 Effect > Normalize to -1 dB (this applies correctly)
3 File > Export, choose "MP3 Files" and export to same file as imported one, project rate 44100 Hz, "Options" button in file export window says "128 kbps, constant bit rate, joint stereo"
4 Audacity asks me if I want to overwrite file, I say "Yes"
5 Audacity tells me I cannot do this because the file is not writable, or because the sun is shining too strongly

OR

5 Audacity exports the file and I import it back in but the peak is now -10 dB again

And if you have an example MP3 that you import into Audacity that produces this problem, that might help, depending what the problem is.


Thanks,


Gale

I do my best to explain my way of working:
1)start Audacity
2)Ctrl+o to open a file
3)Ctrl+a to select the whole waveform
4)select: normalise -3.0db
5)export to the same file
6)the warning appears :file already exist,overrite YES
Then I reopen the newmade file and the changes are not made.That was the thing when I tried to normalise my files to the same volume.
As I told in the other posts I export them to e new foulder and then it was O.K.
Hope to be of any help,thanks again for your concern .

J Van Mol wrote:I do my best to explain my way of working:
1)start Audacity
2)Ctrl+o to open a file
3)Ctrl+a to select the whole waveform
4)select: normalise -3.0db
5)export to the same file
6)the warning appears :file already exist,overrite YES
Then I reopen the newmade file and the changes are not made.That was the thing when I tried to normalise my files to the same volume.
As I told in the other posts I export them to e new folder and then it was O.K.
Hope to be of any help,thanks again for your concern .

Thanks for that, though of course I cannot reproduce any problem in either 1.3.13 or 1.3.14.

How big are the changes you are making to the peak volume - only small amounts like 0.1 dB, or much greater changes?

Exactly what menu option do you use to Export (File > Export or File > Export Multiple)? Do you see a window for Advanced Mixing Options when you export? Are you re-opening the exported MP3 in Audacity?

On what evidence do you say the changes have not been made? You can use Effect > Amplify before and after export to check the peak level of the track - the peak level will be the negative of the value in "Amplification (dB)".

Sorry I can't reproduce the problem at the moment. I think npw the only reasonable suggestion is for you to post an example file that creates this problem. If the file is up to 1 MB you can attach it to your reply.


Thanks


Gale