[ffmpeg] Install tools#10486

Merged

dan-shaw merged 4 commits intomicrosoft:masterfrom

JackBoosY:dev/jack/9619

Mar 28, 2020

Commits on Mar 20, 2020

[ffmpeg] Install tools
JackBoosY
committed

Commits on Mar 22, 2020

[ffmpeg] Fix incorrect macro
JackBoosY
committed
[ffmpeg] Re-fix installation
JackBoosY
committed

Commits on Mar 26, 2020

re-trigger ci test
JackBoosY
committed