$ ffmpeg -i video_sample.mp4 -c:v h264_amf output.mp4

ffmpeg version N-107316-gf9dd8fcf9b Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/home/user/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/user/ffmpeg_build/include --extra-ldflags=-L/home/user/ffmpeg_build/lib --extra-libs='-lpthread -lm' --ld=g++ --bindir=/home/user/bin --enable-gpl --enable-gnutls --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libaom --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-shared --disable-static --enable-amf --enable-nonfree
  libavutil      57. 27.100 / 57. 27.100
  libavcodec     59. 36.100 / 59. 36.100
  libavformat    59. 26.100 / 59. 26.100
  libavdevice    59.  6.100 / 59.  6.100
  libavfilter     8. 41.100 /  8. 41.100
  libswscale      6.  6.100 /  6.  6.100
  libswresample   4.  6.100 /  4.  6.100
  libpostproc    56.  5.100 / 56.  5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video_sample.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:40.87, start: 0.000000, bitrate: 9392 kb/s
  Stream #0:0[0x1](und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p(pc, gbr/bt709/iec61966-2-1), 1920x1080 [SAR 1:1 DAR 16:9], 9391 kb/s, 30.02 fps, 30 tbr, 15360 tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
File 'output.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (h264_amf))
Press [q] to stop, [?] for help
Segmentation fault (core dumped)