VLC @2.2.8: error: libavutil versions 56 and later are not supported

[jwhowse4]

I am running an Intel Mac Pro with Sierra 10.12.6 and XCode 9.2. After upgrading ffmpeg from 3.4.2 to 4.0.0, the macports check for linking errors identifies vlc as needing to be rebuilt. The rebuild fails with errors as listed in the attached log file. If I am interpreting the log file correctly vlc 2.2.8 does not support version 4.0.0 of ffmpeg. As the latest version of vlc is 3.0.2 perhaps the port should be updated? Any ideas about how to fix this?

[jwhowse4]

vlc rebuild log file

[RJVB (René Bertin)]

Nothing to be done about that unless/until VLC starts supporting FFMpeg 4, port:ffmpeg is reverted to FFMmpeg3 or an FFMpeg3 port is provided as a stop-gap measure for more conservative projects (port:mlt is concerned too here, and so might Audacity?). The FFMpeg 3 support was already hacked into VLC 2.2x.

I see that VLC 3.0.2 is out but I cannot seem to find a clear indication what FFMpeg versions it supports. VLC does have an option to build its own FFMpeg copy with its own patches; I might just use that to avoid future breakage.

[rant] Was it really necessary to update to an ABI and API breaking x.0.0 version instead of waiting a few patch or minor releases so that dependent projects can (could) catch up? A port:ffmpeg-devel would make perfect sense here (there used to be one IIRC). rant

[RJVB (René Bertin)]

I've started looking into this.

First observation: VLC 3.x run on 10.9 and up but require 10.10 or higher for building. That means I'm stuck on the 2.2.x series, and will be trying to get 2.2.8 to build against FFMpeg 4.

I do have a test port that provides VLC 3.0.2, if someone wants to git that a spin (preferably someone who can also test whether libVLC is useable by 3rd-party applications on Mac).

[RJVB (René Bertin)]

See ​https://github.com/macports/macports-ports/pull/1808 .

[ryandesign (Ryan Carsten Schmidt)]

The PR was merged.