Bug#790446: mpv: Warning about mismatch between build and run-time ffmpeg libraries

[Guillem Jover]

Package: mpv
Version: 0.9.2-1+ffmpeg
Severity: normal

Hi!

[ First of all, thanks for providing a ffmpeg version of the package,
  there's quite some media that does not play correctly with libav. ]

The mpv program emits the following warning on startup:

,---
Warning: mpv was compiled against a different version of ffmpeg than the shared
library it is linked against. This can expose subtle ABI compatibility issues
and can lead to misbehavior and crashes.
`---

Which, to me points out there's a problem somewhere. Either:

 * the warning is bogus, and
   - mpv should be silenced in common/av_log.c:print_libav_versions, or
   - ffmpeg should not be exposing the minor versions in its macros
     and *_version() functions, so that such warnings do not trigger, or
 * the warning is valid, and
   - mpv needs a strict versioned dependency, or
   - mpv very unfortunately needs to statically link against ffmpeg, or
 * something else?

I'm filing it here, because it's not clear to me where the real
problem lies. Please reassign as appropriate if need be.

Thanks,
Guillem