[FFmpeg-user] Latest GIT version doesn't compile with libvpx_vp9 encoder

[ZikZak]

Hello,

I freshly recompiled libvpx (for both VP8 and VP9) then FFMPEG and
strangely the result only allows me libvpx_vp8 as encoder despite a
configure with enable-encoder=libvpx_vp8 and enable-encoder=libvpx_vp9

vpxenc's help lists VP9 as a possible encoder

Configuration for libvpx:
./configure --disable-unit-tests --disable-docs --enable-vp8 --enable-vp9
--enable-postproc --enable-vp9-postproc --enable-vp9-temporal-denoising
--enable-runtime-cpu-detect

Configuration for ffmpeg:
./configure --enable-nonfree --disable-doc --enable-libvpx
--prefix=/usr/local --disable-encoders --enable-encoder=libvpx_vp8
--enable-encoder=libvpx_vp9 --disable-ffserver --enable-gpl
--enable-encoder=png --enable-encoder=libopus --enable-encoder=webvtt
--enable-libopus --enable-ffplay --enable-ffprobe

It is on an ARM platform, if it matters.