# wget 俺が使ってるのはffmpeg-4.4でUbuntuのffmpeg configureで--enable-vulkanをしていない
wget -O ffmpeg-4.4.4.tar.bz2 https://ffmpeg.org/releases/ffmpeg-4.4.4.tar.bz2
tar xjvf ffmpeg-4.4.4.tar.bz2

mkdir $HOME/ffmpeg-build
PKG_CONFIG_PATH="/usr/local/lib/pkgconfig"
../configure \
--prefix="$HOME/ffmpeg-build" \


# AMF SDK のダウンロード
git clone https://github.com/GPUOpen-LibrariesAndSDKs/AMF.git

# AMF SDK の配置
cd AMF/amf/public/include
sudo mkdir /usr/local/include/AMF
sudo cp -r ./* /usr/local/include/AMF/

.bashrc
export VK_ICD_FILENAMES=/opt/amdgpu-pro/etc/vulkan/icd.d/amd_icd64.json

ffmpeg -ss 1 -i "in.ts" -vf "format=nv12, bwdif, scale=1280:720" -c:v hevc_amf -quality quality -min_qp_i 18 -max_qp_i 28 -min_qp_p 18 -max_qp_p 28 -header_insertion_mode idr -g 120 -rc vbr_peak -vbaq false -maxrate 10M -b:v 2.5M -filter_complex atrim=start_sample=1024,asetpts=PTS-STARTPTS -codec:a libfdk_aac -b:a 128k "out1.mp4"

Stream mapping:
Stream #0:1 (aac) -> atrim (graph 0)
asetpts (graph 0) -> Stream #0:0 (libfdk_aac)
Stream #0:0 -> #0:1 (mpeg2video (native) -> hevc (hevc_amf))
Stream #0:1: Video: hevc (hev1 / 0x31766568), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 2500 kb/s, 59.94 fps, 60k tbn

hevc_amf 1280x720 60p.mp4 557.0 MB