[Audacity-quality] Stereo AIF files import as silence when using FFmpeg importer

[Bill W. <bi...@go...>]

I came across this while testing OD-import using FFmpeg (which seems to work fine).

I don't think this is a release blocker for 2.0.1. Possibly P3 (if it is not already in Bugzilla - I couldn't find it) as there is a simple workaround - don't use FFmpeg to import stereo AIF files.

Cross-posting to -devel as it is up to RM to decide the severity of this bug.

Audacity 2.0.1. Mac OSX 10.7.2. Clean install (no audacity.cfg file, no 1.2.x prefs existing on the system). FFmpeg files in standard location and found on startup.

Start Audacity.
File > Import > Audio; choose "FFmpeg-compatible files" then choose a WAV or AIF file
- the file imports with libsndfile complete with the "uncompressed file warning" dialog.
Delete track
Preferences > OK
- note that audacity.cfg is created at this point.
File > Import > Audio; choose "FFmpeg-compatible files" then choose a stereo AIF file
- the file imports as silence
Log says:
11:45:00: File name is /path/to/file.aiff
11:45:00: Mime type is *
11:45:00: Opening with libav
11:45:00: Open(/path/to/file.aiff) succeeded
Delete track
File > Import > Audio; choose "FFmpeg-compatible files" then choose a MONO AIF file
- file imports successfully
Delete Track
File > Import > Audio; choose "FFmpeg-compatible files" then choose a stereo WAV file
- file imports successfully
Delete track
Preferences > Libraries; check "Allow background on-demand loading"; OK
File > Import > Audio; choose "FFmpeg-compatible files" then choose a stereo AIF file
- the file imports as noise
Delete track
File > Import > Audio; choose "FFmpeg-compatible files" then choose a MONO AIF file
- file imports successfully

-- Bill