Bug 2578 – Linux/Windows: Export 24-bit AIFF exports as 16-bit

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Audacity 3.0.3 development began 19th April 2021

Audacity Bugzilla

Bug 2578 - Linux/Windows: Export 24-bit AIFF exports as 16-bit


Summary:	Linux/Windows: Export 24-bit AIFF exports as 16-bit

Status:	RESOLVED FIXED

Product:	Audacity
Classification:	Unclassified
Component:	Formats
Version:	2.4.2
Hardware:	All Windows and Linux

Importance:	P3 Repeatable
Assigned To:	Default Assignee for New Bugs

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2020-10-29 16:09 UTC by Steve Daulton
Modified:	2021-01-28 15:23 UTC (History)
CC List:	3 users (show)

See Also:
Steps To Reproduce:	1. Launch Audacity with factory settings 2. Record, import or generate an audio track 3. Export as "other uncompressed file > AIFF + 24-bit 4. Observe that the exported file is 16-bit AIFF
Release Note:	Import/Export: Exporting as 24-bit AIFF may produce a 16-bit AIFF file.
First Git SHA:
Group:	---
Workaround:	Export some audio as 24-bit WAV first before exporting as 24-bit AIFF.
Closed:	2021-01-28 00:00:00

Flags:	stevethefiddle: Must‑Test‑All‑OS+ stevethefiddle: Regression+ petersampsonaudacity: Test‑OK‑Win+ petersampsonaudacity: Test‑OK‑Mac+

Attachments
still 16-bit and not 24-bit (36.00 KB, image/png) 2021-01-23 12:06 UTC, Peter Sampson	Details
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Description Steve Daulton 2020-10-29 16:09:07 UTC

With default preferences, 24-bit AIFF export produces 16-bit  AIFF files.
Reported on Windows and confirmed on Linux.
This is a regression against Audacity 2.3.3.

Comment 1 Peter Sampson 2020-10-30 09:24:52 UTC

Testing on macOS 10.15.7 with Audacity 3.0.0 3978e8c

This works properly on Mac.

Note that on Mac AIFF (as native Apple format) is one of the primary choices in Export Audio as a primary "File Type" choice.  It is the default setting for "File Type" on Mac

Comment 2 Peter Sampson 2020-10-30 09:27:16 UTC

Testing on W10 with Audacity 3.0.0 3978e8c

I confirm that this is the erroneous case.

Comment 3 Leland Lucius 2021-01-23 07:09:39 UTC

Fix in:

https://github.com/audacity/audacity/commit/7427653

Comment 4 Peter Sampson 2021-01-23 12:06:19 UTC

Created attachment 1055 [details]
still 16-bit and not 24-bit

Tested on W10 with Audacity 3.0.0 4e6e3c2

This still exports a 16-bit AIFF and not a 24-bit one - see attachment

Comment 5 Leland Lucius 2021-01-23 19:16:01 UTC

Right you are Peter. I know I saw a 24-bit file at one point, but I have no idea how I created it.

Anyway, try:

https://github.com/audacity/audacity/commit/37a7583

Also, I REALLY like that MediaInfoOnline site!  Really simple and quick.

Comment 6 Peter Sampson 2021-01-24 10:48:57 UTC

Tested on W10 with Audacity 3.0.0 4b07fba

MediaInfo now shows the at AIFF file gets properly exported at 24-bit and not 16-bit.

So this is OK now on Windows.

Comment 7 Peter Sampson 2021-01-28 15:23:48 UTC

Examining the commit for this clearly shows that this fix is platform independent:
https://github.com/audacity/audacity/commit/37a75833066b07780e0976fad187dab8870534aa

Ans as this works OK on Win and Mac I shall close this as FIXED