avcodec encoder warning: cannot send one frame to encoder -22

[js1]

vlc -I dummy command not able to write to transcode output audio to mp3 file. Getting "avcodec encoder warning: cannot send one frame to encoder -22". Exact same command in 20.04 works. vlc debug attached.

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: vlc-bin 3.0.16-1
ProcVersionSignature: Ubuntu 5.13.0-22.22-generic 5.13.19
Uname: Linux 5.13.0-22-generic x86_64
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Thu Dec 9 00:02:37 2021
InstallationDate: Installed on 2021-12-07 (1 days ago)
InstallationMedia: Kubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[js1 (sujiannming)]

Same problem persisted into 22.04. Case opened with VLC developers: https://code.videolan.org/videolan/vlc/-/issues/26919

[Alex A. D. (hinell)]

Experiencing the same issue.

I've run the following command:
  $ cvlc -vvv pulse://alsa_output.pci-0000_07_00.3.iec958-stereo.monitor --no-sout-video --sout '#transcode{acodec=mp3,ab=128,channels=2}:std{access=http,dst=0.0.0.0:8888/pc.mp3}'

Platform:
- Kubuntu 22.04.1 LTS Linux 5.15.0-43-generic x86_64 GNU/Linux
- VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
- VLC version 3.0.16 Vetinari (3.0.13-8-g41878ff4f2)
- Pulseaudio 15.99.1

[js1 (sujiannming)]

Appears to be an incompatibility problem with ffmpeg 4.4 (focal shipped with ffmpeg-4.2, and impish and newer updated to 4.4), which appears to have been fixed in VLC 3.0.17.4: https://code.videolan.org/videolan/vlc/-/issues/25851