title: Android FFMPEG is not able to read the font file
body: <p>Android FFmpeg failed to read the system's font file, although the font file exists</p>
  <p>This is the code:</p>
  <pre><code>ffmpeg -i /storage/emulated/0/DCIM/Camera/VID_20220414_215502.mp4 -vf drawtext=fontfile='/system/fonts/DroidSans.ttf':text='Hamer Hamer':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=100:y:100 -movflags +faststart /storage/emulated/0/Movies/random-1660738905069.mp4
  </code></pre>
  <p>This the error shown:</p>
  <pre><code>mobile-ffmpeg: [Parsed_drawtext_0 @ 0xb400006e074623d0] Cannot find a valid font for the family Sans
  </code></pre>