title: Impossible to convert between the formats supported by the filter '...' - Error reinitializing filters
body: <p>I am using this ffmpeg command(values removed for simplicity)</p>
  <pre><code>ffmpeg -hwaccel cuvid -c:v h264_cuvid -y -ss 1 -i &quot;FILE0001.MOV&quot; -ss 0 -i &quot;GOPR0621.MP4&quot; -filter_complex 
  [0:v][1:v]
    midequalizer
  [al];
  [al]
    yadif
    lenscorrection
    scale
  [vl];
  [1:v]
    lenscorrection
    scale
  [vr];
  [vl][vr]
    hstack=shortest=1 
  -an -c:v h264_nvenc -preset slow &quot;output.mp4&quot;
  </code></pre>
  <p>on a machine with a cuda graphics card.</p>
  <p>I get</p>
  <pre><code>ffmpeg version N-90979-g08032331ac Copyright (c) 2000-2018 the FFmpeg developers
    built with gcc 7.3.0 (GCC)
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    libavutil      56. 18.100 / 56. 18.100
    libavcodec     58. 19.100 / 58. 19.100
    libavformat    58. 13.101 / 58. 13.101
    libavdevice    58.  4.100 / 58.  4.100
    libavfilter     7. 21.100 /  7. 21.100
    libswscale      5.  2.100 /  5.  2.100
    libswresample   3.  2.100 /  3.  2.100
    libpostproc    55.  2.100 / 55.  2.100
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00000254a8afc0c0] st: 0 edit list: 1 Missing key frame while searching for timestamp: 6006
  [mov,mp4,m4a,3gp,3g2,mj2 @ 00000254a8afc0c0] st: 0 edit list 1 Cannot find an index entry before timestamp: 6006.
  ....
  Stream mapping:
    Stream #0:0 (h264_cuvid) -&gt; midequalizer:in0
    Stream #1:0 (h264) -&gt; midequalizer:in1
    Stream #1:0 (h264) -&gt; lenscorrection
    hstack -&gt; Stream #0:0 (h264_nvenc)
    
  Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'
  Error reinitializing filters!
  </code></pre>
  <p>The same command without CUDA works, ie</p>
  <pre><code>ffmpeg -y -ss 1 -i &quot;FILE0001.MOV&quot; -ss 0 -i &quot;GOPR0621.MP4&quot; -filter_complex 
  [0:v][1:v]
    midequalizer
  [al];
  [al]
    yadif
    lenscorrection
    scale
  [vl];
  [1:v]
    lenscorrection
    scale
  [vr];
  [vl][vr]
    hstack=shortest=1 
  -an &quot;output.mp4&quot;
  </code></pre>
  <p>How do I make it work on a Windows 10 machine with cuda?</p>