Update to FFMpeg 9.0

Merge pull request #74 from defisym/FFMpegD3D9CrashFix

FFMpeg D3D9 crash fix

rebuild to impl change

Update FFMpeg.md

Update ShaderCompiler.h

rebuild

Optimize base index calculate

Optimize base index calculate

Update FFMpeg.md

Merge pull request #49 from defisym/EOS_FIX

Callbacks protect & log state over frames