Audacity Forum

Using Audacity 1.3.7 build Jan 28 2009

I need to use the FFmpeg library it seems to import a mobile phone .amr audio file.

Well the Audacity web link in the Prefs -FFmpeg Library Download icon points to a place which doesn't exist.

http://lame.buanzo.com.ar/ffmpeg.win32. ... encies.exe
is dead. (so this needs to be changed).

I did find - http://ffmpeg.arrozcru.org/builds/

and it seems I need to use - http://ffmpeg.arrozcru.org/builds/share ... 32.tar.bz2

I'm no expert.

Since these are 'unofficial', is there an official Windows binary source?

quatermass wrote:Using Audacity 1.3.7 build Jan 28 2009
I need to use the FFmpeg library it seems to import a mobile phone .amr audio file.
Well the Audacity web link in the Prefs -FFmpeg Library Download icon points to a place which doesn't exist.

http://lame.buanzo.com.ar/ffmpeg.win32. ... encies.exe
is dead. (so this needs to be changed).

I did find - http://ffmpeg.arrozcru.org/builds/

and it seems I need to use - http://ffmpeg.arrozcru.org/builds/share ... 32.tar.bz2 I'm no expert. Since these are 'unofficial', is there an official Windows binary source?

The link is correct but lame.buanzo.com is experiencing problems at present. You can download this instead:
http://www.gaclrecords.org.uk/FFmpeg_20 ... indows.exe

However the FFmpeg binary which that installs does not support AMR because AMR support is legally undistributable. To get AMR support you would have to compile FFmpeg from the source code:
http://ffmpeg.mplayerhq.hu/download.html

using the Cygwin development environment (the easier Visual Studio environment available from Microsoft won't compile FFmpeg):
http://www.cygwin.com/

More realistically, I would suggest you download SUPER which will convert the AMR file to PCM WAV then Audacity can import it:
http://www.erightsoft.com/SUPER.html#Dnload

Drag the AMR file into SUPER then:

1) in the output container list top left choose "WAV (audio only)"
2) in the output audio codec list top right "WAV pcm 16 little endian"
3) In the "audio" panel select 44 100 in "Sample Freq" and "1 channel"
4) Right-click > Specify the Output Folder Destination and choose a location
for the exported WAV that you can remember. Click "Save Changes".
5) Ensure the check box by the name of the file you dragged in is checked
then click "Encode (Active Files)". When a file size appears to right of the
file name under "Output Status", you're done.

If you need the file to remain in AMR format after editing, export from Audacity as WAV (Microsoft) signed 16 bit PCM, drag the WAV into SUPER, then choose AMR in the output container list at the top. Note re-encoding as AMR will reduce the quality.




Gale

Gale Andrews wrote:
The link is correct but lame.buanzo.com is experiencing problems at present. You can download this instead:
http://www.gaclrecords.org.uk/FFmpeg_20 ... indows.exe

Sounds like the Audacity Wiki page needs updating to include a backup link.
Do I need to report that to someone else to get it updated?

Gale Andrews wrote: However the FFmpeg binary which that installs does not support AMR because AMR support is legally undistributable. To get AMR support you would have to compile FFmpeg from the source code:
http://ffmpeg.mplayerhq.hu/download.html

using the Cygwin development environment (the easier Visual Studio environment available from Microsoft won't compile FFmpeg):
http://www.cygwin.com/

Thanks for letting me know about the license issues.

Gale Andrews wrote: More realistically, I would suggest you download SUPER which will convert the AMR file to PCM WAV then Audacity can import it:
http://www.erightsoft.com/SUPER.html#Dnload

Drag the AMR file into SUPER then:

Gale

Thanks I use Super already. But Audacity seemed to suggest I needed the FFmpeg library to import it which started me down this path.

I did also find a AMR to WAV file converter.
http://www.miksoft.net/mobileAMRconverter.htm


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