title: How to add FFMPEG GPU Logo
body: <p>I just couldn't do it. Is the problem with the Filter?</p>
  <p>This is the command I am trying to run:</p>
  <p><code>ffmpeg -hwaccel_device 1 -hwaccel cuda -hwaccel_output_format cuda -f concat -safe 0 -stream_loop -1 -i /media/mylist.txt -i /logo.png -filter_complex &quot;overlay=x=main_w*0.01:y=main_h-overlay_h-(main_h*0.01)&quot; -c:a aac -c:v h264_nvenc -pix_fmt yuv420p -preset fast -tune hq -r 25 -b:v 3M -f flv rtmp://127.0.0.1:1935/live/mystream</code></p>
  <p>This is the output I am getting:</p>
  <pre><code>Input #1, png_pipe, from '/logo.png':
  Duration: N/A, bitrate: N/A
  Stream #1:0: Video: png, rgba(pc), 130x66 [SAR 2834:2834 DAR 65:33], 25 fps, 25 tbr, 25 tbn
  Codec AVOption tune (The metric that the encoder tunes for. Automatically chosen by the encoder by default) specified for output
  file #0 (rtmp://127.0.0.1:25462/live/mystream) has not been used for
  any stream. The most likely reason is either wrong type (e.g. a video
  option with no video streams) or that it is a private option of some
  encoder which was not actually used for any stream.
  Stream mapping:
  Stream #0:0 (h264) -&gt; overlay (graph 0)
  Stream #1:0 (png) -&gt; overlay (graph 0)
  overlay:default (graph 0) -&gt; Stream #0:0 (h264_nvenc)
  Stream #0:1 -&gt; #0:1 (ac3 (native) -&gt; aac (native))
  Press [q] to stop, [?] for help
  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scale_0'
  Error reinitializing filters!
  Failed to inject frame into filter network: Function not implemented
  Error while processing the decoded data for stream #1:0
  [aac @ 0x562ac3287f80] Qavg: 481.281
  [aac @ 0x562ac3287f80] 2 frames left in the queue on closing
  Conversion failed!
  </code></pre>