User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
Firefox/52.0
Build Identifier: 

After starting mpv it shows a warning that is was compiled against an other
ffmpeg version then the installed one. I think this also leads to problems with
subtitle support (since this issue, mpv does not show subtitles correctly).

Reproducible: Always

Steps to Reproduce:
1. Install mpv from openSUSE 42.2 Update
2. Run it
Actual Results:  
mpv prints this warning:
> ffmpeg library versions:
>    libavutil       55.34.100 (runtime 55.34.101)                                                                                                             
>    libavcodec      57.64.100 (runtime 57.64.101)                                                                                                             
>    libavformat     57.56.100 (runtime 57.56.101)                                                                                                             
>    libswscale      4.2.100                                                                                                                                   
>    libavfilter     6.65.100                                                                                                                                  
>    libswresample   2.3.100                                                                                                                                   
> ffmpeg version: 3.2.4                                                                                                                                        
> 
> mpv was compiled against a different version of FFmpeg/Libav than the shared                                                                                 
> library it is linked against. This is most likely a broken build and could                                                                                   
> result in misbehavior and crashes.                                                                                                                           
> 
> Upstream does not support this configuration.                                                                                                                
> Please rebuild mpv in case of any problems. 

Expected Results:  
No warning.

Installed:
mpv version 0.22.0-6.1 from openSUSE-Leap-42.2-Update
libavutil55, libavformat57 and libavcodec57 version 3.2.4-6.5.1 from PackMan

BUT libavutil55, libavformat57 and libavcodec57 3.2.4-6.3.1 from
openSUSE-Leap-42.2-Update do not work either (same warning).