FFmpeg 5.0 compatibility

[alucryd]

Trying to build ffms2 against ffmpeg 5.0 produces an error during configure:

configure:17197: checking whether FFmpeg works
configure:17217: gcc -o conftest -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection -flto   -D__STDC_CONSTANT_MACROS -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -flto conftest.c  -lavformat -lavcodec -lswscale -lavutil -lswresample >&5
conftest.c: In function 'main':
conftest.c:31:17: warning: implicit declaration of function 'avcodec_register_all' [-Wimplicit-function-declaration]
   31 |                 avcodec_register_all();
      |                 ^~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccTVFp6e.ltrans0.ltrans.o: in function `main':
<artificial>:(.text.startup+0xc): undefined reference to `avcodec_register_all'
collect2: error: ld returned 1 exit status

Does ffms2 need to be updated?

[dwbuiten]

This was fixed in 586d87d in master, quite a while ago.

[alucryd]

Ah sorry, I had found the commit and forgot to close this, thanks for the fix!