ExportWAV using FFmpeg won't export 24 bit

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anechoic
Posts: 22
Joined: Thu Aug 07, 2008 8:02 pm
Operating System: Linux Mint

ExportWAV using FFmpeg won't export 24 bit

Post by anechoic » Tue Feb 21, 2017 6:24 pm

I create a new chain using the ExportWAV
parameters for ExportWAV can't be set in chain edit box so...
I create a dummy file with a sine wave
set export params using Custom FFmpeg export from pulldown in save dialog
Open Custom format options in same dialog box
set to wav and pcm_s24le
close dummy wav file
go to Apply Chain
set to folder of aiff files
hit "OK"
exports to a new folder called "cleaned"
check the files using "sndfile-info" on command line
all the files are 16 bit as seen here
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
File : myfilepath/cleaned/myfile.wav
Length : 118327284
RIFF : 118327276
WAVE
fmt : 16
Format : 0x1 => WAVE_FORMAT_PCM
Channels : 2
Sample Rate : 44100
Block Align : 4
Bit Width : 16
Bytes/sec : 176400
data : 118327240
End
~~~~~~~~~~~~~~~~~
is this a known bug using FFmprg?

thanks!
KC

steve
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Posts: 47319
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu
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Re: ExportWAV using FFmpeg won't export 24 bit

Post by steve » Tue Feb 21, 2017 6:33 pm

anechoic wrote:is this a known bug using FFmprg?
It's a "limitation".
The only export options that are currently supported in Chains are those that are listed in the interface. FFmpeg is not currently supported at all in Chains, but I shall log your interest in this feature on the Audacity wiki "Feature Requests" page.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

steve
Site Admin
Posts: 47319
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu
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Re: ExportWAV using FFmpeg won't export 24 bit

Post by steve » Tue Feb 21, 2017 6:35 pm

steve wrote:I shall log your interest in this feature on the Audacity wiki "Feature Requests" page
"Vote" added.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

anechoic
Posts: 22
Joined: Thu Aug 07, 2008 8:02 pm
Operating System: Linux Mint

Re: ExportWAV using FFmpeg won't export 24 bit

Post by anechoic » Tue Feb 21, 2017 8:25 pm

thanks! I ended up using the "other uncompressed files" to do what I needed but having access to FFmpeg would be very handy as would being able to set params using ExportWAV :)

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