ppm2mp4 can't find library run on MacBook

[Virgile]

Dear All,

I have recently installed Basilisk on my MacBook (M3 Max) and I am struggling to make the bview test karman work. The first test bump2D did work flawless.

The code builds, then when I run it I get the error message below. Apparently, ppm2mp4 needs some library, libvpx.7.dylib, which it can't find. At the same path, I have libvpx.8.dylib, likely the updated version. Does that problem ring any bell?

Also, if I "hide" ppm2mp4, karman runs and produce ppm files, but then when I try to use ppm2pm4 to convert them to mp4, the problem comes back.

Cheers,

Virgile Thiévenaz

/Users/Virgile/Science/basilisk/src/ppm2mp4: line 44: 12739 Abort trap: 6           $command 2> $log
dyld[12739]: Library not loaded: /usr/local/opt/libvpx/lib/libvpx.7.dylib
  Referenced from: <F12F8172-D0EA-3619-9977-313C4EA8CB32> /usr/local/Cellar/libav/12.3_8/bin/avconv
  Reason: tried: '/usr/local/opt/libvpx/lib/libvpx.7.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/opt/libvpx/lib/libvpx.7.dylib' (no such file), '/usr/local/opt/libvpx/lib/libvpx.7.dylib' (no such file), '/usr/local/lib/libvpx.7.dylib' (no such file), '/usr/lib/libvpx.7.dylib' (no such file, not in dyld cache), '/usr/local/Cellar/libvpx/1.13.0/lib/libvpx.7.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/local/Cellar/libvpx/1.13.0/lib/libvpx.7.dylib' (no such file), '/usr/local/Cellar/libvpx/1.13.0/lib/libvpx.7.dylib' (no such file), '/usr/local/lib/libvpx.7.dylib' (no such file), '/usr/lib/libvpx.7.dylib' (no such file, not in dyld cache)

[Wojciech Aniszewski]

What happens if you do 'which avconv' and/or 'which ffmpeg' in the terminal?

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[Stephane Popinet]

Hi Virgile,

Don't use a Mac...

> The code builds, then when I run it I get the error message below.
> Apparently, ppm2mp4 needs some library, libvpx.7.dylib, which it can't
> find. At the same path, I have libvpx.8.dylib, likely the updated
> version. Does that problem ring any bell?

This has nothing to do with Basilisk. You should see/ask on the Mac
forums how to properly install ffmpeg/avconv.

cheers,

Stephane

[Virgile]

Ok ! I found the problem.

avconv is no longer maintained, but an older version was still installed on my computer and was called by ppm2mp4. The solution is to create a symbolic link avconv to ffmpeg (https://ubuntuforums.org/showthread.php?t=2491756).

Thanks to both of you for your help, it unlocked me.

Maybe next computer will be a Linux ^^