title: How to to burn subtitles based image on video using 'overlay_cuda', ffmpeg video filter
body: <p>I have to burn subtitles based image on video using ffmpeg(v4.3) and cuda, hardware accelerator. I want to use 'overlay_cuda' in filter complex.</p>
  <p>It is my command.</p>
  <pre><code>./ffmpeg -init_hw_device cuda=cuda:1 -hwaccel cuda -filter_hw_device cuda -hwaccel_output_format cuda -i 2_dump.ts -filter_complex &quot;[v:0]scale_npp=1920:1080,format=yuv420p[base_video];[base_video][s:3]overlay_cuda[resurlt_video]&quot; -map &quot;[resurlt_video]&quot; -map 0:a -c:v h264_nvenc -f mpegts subtitle_test.ts
  </code></pre>
  <p>But it's fail.</p>
  <p>These are output massage included error.</p>
  <pre><code>ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
  configuration: --prefix=/usr/local --pkg-config-flags=--static --extra-cflags=-I/usr/local/include --extra-ldflags='-L/usr/local/lib -L/usr/local/lib64' --extra-libs='-lm -lpthread -lc' --bindir=/usr/local/bin --enable-cross-compile --enable-pic --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --enable-libass --enable-static --disable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
  [mpegts @ 0x4971500] start time for stream 5 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 6 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 7 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 8 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 9 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 10 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 11 is not set in estimate_timings_from_pts
  [mpegts @ 0x4971500] start time for stream 12 is not set in estimate_timings_from_pts
  Input #0, mpegts, from '2_dump.ts':
  Duration: 00:05:09.80, start: 1.400000, bitrate: 12595 kb/s
  Program 1 
  Metadata:
    service_name    : Service01
    service_provider: AMUZLAB
  Stream #0:0[0x100](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 384 kb/s
  Stream #0:1[0x101](ind): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:2[0x102](zho): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:3[0x103](kho): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:4[0x104]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
  Stream #0:5[0x105](CHI): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:6[0x106](CHS): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:7[0x107](IND): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:8[0x108](THA): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:9[0x109](MAN): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:10[0x10a](MON): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:11[0x10b](BUR): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  Stream #0:12[0x10c](ENG): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  File 'subtitle_test.ts' already exists. Overwrite? [y/N] y
  Stream mapping:
  Stream #0:4 (h264) -&gt; scale_npp (graph 0)
  Stream #0:8 (dvbsub) -&gt; overlay_cuda:overlay (graph 0)
  overlay_cuda (graph 0) -&gt; Stream #0:0 (h264_nvenc)
  Stream #0:0 -&gt; #0:1 (ac3 (native) -&gt; mp2 (native))
  Stream #0:1 -&gt; #0:2 (ac3 (native) -&gt; mp2 (native))
  Stream #0:2 -&gt; #0:3 (ac3 (native) -&gt; mp2 (native))
  Stream #0:3 -&gt; #0:4 (ac3 (native) -&gt; mp2 (native))
  Press [q] to stop, [?] for help
  [mpegts @ 0x4971500] sub2video: using 1920x1080 canvas
  Impossible to convert between the formats supported by the filter 'Parsed_scale_npp_0' and the filter 'auto_scaler_0'
  Error reinitializing filters!
  Failed to inject frame into filter network: Function not implemented
  Error while processing the decoded data for stream #0:4
  Conversion failed!
  </code></pre>
  <p>And, It is command line succeeded used 'overlay', software video filter, non_hardware accelerator.</p>
  <pre><code>./ffmpeg -hwaccel cuda -re -i 2_dump.ts -filter_complex &quot;[0:v:0][0:s:3]overlay[v]&quot; -map &quot;[v]&quot; -map 0:a -c:v h264_nvenc -f mpegts subtitle_test.ts
  </code></pre>
  <p><strong>How to to burn subtitles based image on video using ffmpeg(v4.3) and cuda, hardware accelerator?</strong></p>
  <p><strong>Thank you.</strong></p>