The claim on --enable-vaapi missing in official ffmpeg is wrong?
> Note: The flag --enable-vaapi needs to be configured to use VA-API with ffmpeg, which ffmpeg does not contain. You can check the configuration of ffmpeg: ffmpeg -buildconf
However, with the example transcode code above with `local/ffmpeg 2:4.3.1-3`
it does show that `encoder : Lavc58.91.100 h264_vaapi`
I think is due to the autodetect thing in ffmpeg compile time?