Bug 419 – FFmpeg files import as noise but no error if FFmpeg missing

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Audacity 3.0.3 development began 19th April 2021

Audacity Bugzilla

Bug 419 - FFmpeg files import as noise but no error if FFmpeg missing


Summary:	FFmpeg files import as noise but no error if FFmpeg missing

Status:	RESOLVED FIXED

Product:	Audacity
Classification:	Unclassified
Component:	Formats
Version:	1.3.14 alpha
Hardware:	Per OS All

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

URL:
Keywords:	FFmpeg

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-06-25 19:26 UTC by Gale Andrews
Modified:	2018-08-20 11:46 UTC (History)
CC List:	3 users (show)

See Also:
Steps To Reproduce:	1 Disable FFmpeg by renaming the installed FFmpeg library file that Audacity looks for i.e. "avformat-52.dll" on Windows, "libavformat-52.dylib" on Mac or "libavformat.so.52" on Linux. 2 File > Import > Audio (or drag in) a native FFmpeg file such as wma or aac. 3 File imports as a few ms of screech using libmad but with no displayed error message to help user. 4 Repeat with 1.3.13 Beta. File import gives error stating file type (if dragged in), or explicitly requests FFmpeg (if File > Import > Audio is used).
Release Note:	GROUP: Imports and Exports Files that can only be imported using [http://manual.audacityteam.org/man/FAQ:Installation_and_Plug-Ins#installffmpeg FFmpeg] will import as a few milliseconds of noise (without error message) if FFmpeg is not available. '''Workaround:''' install FFmpeg to import these files, or use SUPER or iTunes to convert the file to WAV.
First Git SHA:
Group:	---
Workaround:
Closed:	2018-08-20 00:00:00

Flags:	gale: Regression+

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Description Gale Andrews 2011-06-25 19:26:12 UTC

Regression caused by fix for Bug 372 (MP2 files could not be imported without FFmpeg). Perhaps we need to stop libmad taking native FFmpeg files? It should not be a case of choosing one bug or another to live with because 1.3.12 both imported MP2 and threw an error when importing FFmpeg files with FFmpeg missing.

Comment 1 Michael Chinen 2011-08-01 16:52:25 UTC

Fixed via patch from David Wallace in r 11229- see audacity devel ML for more info including tests.

Comment 2 Gale Andrews 2012-06-28 18:50:57 UTC

RESOLVED - FIXED (tested all three platforms). MP2 still imports fine. Thanks.