Compressed project files have no audio!

Help for Audacity on macOS.
Forum rules
ImageThis forum is for Audacity on macOS 10.4 and later.
Please state which version of macOS you are using,
and the exact three-section version number of Audacity from "Audacity menu > About Audacity".


Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
Post Reply
hivcnbdcvz
Posts: 4
Joined: Sun Apr 21, 2013 8:10 pm
Operating System: Please select

Compressed project files have no audio!

Post by hivcnbdcvz » Sun Apr 21, 2013 8:14 pm

I added some label to an mp3 file and then saved it with the 'Save Compressed copy of Project" command.
But opening the Project file just shows the label track and no audio!

Where is my audio??


Audacity 2.0.3 (dmg)
MacOS X 10.6.8

kozikowski
Forum Staff
Posts: 68938
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: Compressed project files have no audio!

Post by kozikowski » Sun Apr 21, 2013 10:03 pm

That does work for me using the same machine and Audacity.
I enclosed the stereo sound file I used. You try it. Koz
Attachments
DeniseFirstPass-Edited.mp3
(1.51 MiB) Downloaded 100 times

hivcnbdcvz
Posts: 4
Joined: Sun Apr 21, 2013 8:10 pm
Operating System: Please select

Re: Compressed project files have no audio!

Post by hivcnbdcvz » Sun Apr 21, 2013 11:06 pm

Do we need to save as a regular project file first an then do the "'Save Compressed copy of Project command?
I was able to successfully save a compressed project that way.

But, once I open the compressed project file again a full size copy of the data seems to be created within the project folder! That seems to sort of negate the whole point of the compression...

Gale Andrews
Quality Assurance
Posts: 41761
Joined: Fri Jul 27, 2007 12:02 am
Operating System: Windows 10

Re: Compressed project files have no audio!

Post by Gale Andrews » Mon Apr 22, 2013 1:52 am

hivcnbdcvz wrote: once I open the compressed project file again a full size copy of the data seems to be created within the project folder! That seems to sort of negate the whole point of the compression...
No. If you read the message when you click to save a compressed project, or read the Manual, this should be clearer.

The only purpose of a compressed project is to save its data as a small, lossy OGG file, rather than as uncompressed PCM data. The main rationale for that is to produce a much smaller project that you could send to someone else, but still retain data that can only be saved in projects, like envelope points.

When it comes to reopening the compressed project, Audacity decompresses the OGG file as it would any other imported OGG file. Audacity needs lossless PCM data to run many effects such as filters.
hivcnbdcvz wrote:Do we need to save as a regular project file first an then do the "'Save Compressed copy of Project command?
No. If your reopened compressed project had no audio, then might you have deleted the OGG file in the _data folder?


Gale
________________________________________FOR INSTANT HELP: (Click on Link below)
* * * * * Tips * * * * * Tutorials * * * * * Quick Start Guide * * * * * Audacity Manual

Post Reply