Create 5 second intro from image and concatenate to a video I want to make a 5 second intro from 55.png, and concatenate it to the beginning of 55.mp4. I would like to incorporate it into this command:

ffmpeg -y -i 55.mp4 -i intro -filter_complex "[0:a]atempo=1.15,volume=1.6,pan=stereo|c0&lt;c0+0*c1|c1&lt;c0+0*c1,aeval=val(0)|-val(1) [amain]; [0:v]setpts=PTS/1.15,crop=iw/1.2:ih/1.2,scale=1280:720,setdar=16/9 [vmain]; [1:v]scale=1280:720,setdar=16/9 [vintro]; [vintro][1:a][vmain][amain]concat=n=2:v=1:a=1" -vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1400k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -metadata title="" -metadata artist="" -metadata album_artist="" -metadata album="" -metadata date="" -metadata track="" -metadata genre="" -metadata publisher="" -metadata encoded_by="" -metadata copyright="" -metadata composer="" -metadata performer="" -metadata TIT1="" -metadata TIT3="" -metadata disc="" -metadata TKEY="" -metadata TBPM="" -metadata language="eng" -metadata encoder="" -bufsize 500000k -threads 0 -preset superfast out2222.mp4


Info about my ffmpeg and about 55.mp4:

ffmpeg version git-2020-04-13-59e3a9a Copyright (c) 2000-2020 the FFmpeg develop
ers
  built with gcc 9.3.1 (GCC) 20200328
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfi
g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libb
luray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --e
nable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-lib
twolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --
enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --e
nable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo
-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
--disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --ena
ble-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable
-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 42.102 / 56. 42.102
  libavcodec     58. 78.102 / 58. 78.102
  libavformat    58. 42.100 / 58. 42.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 77.101 /  7. 77.101
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '55.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2020-03-26T08:17:13.000000Z
  Duration: 00:04:29.12, start: 0.000000, bitrate: 1402 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709)
, 1280x720 [SAR 1:1 DAR 16:9], 1270 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 t
bc (default)
    Metadata:
      creation_time   : 2020-03-26T08:17:13.000000Z
      handler_name    : ISO Media file produced by Google Inc. Created on: 03/26
/2020.
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt
p, 127 kb/s (default)
    Metadata:
      creation_time   : 2020-03-26T08:17:13.000000Z
      handler_name    : ISO Media file produced by Google Inc. Created on: 03/26
/2020.


Info about 55.png:

    Stream #0:0: Video: png, rgba(pc), 305x432 [SAR 3778:3778 DAR 305:432], 25 tbr, 25 tbn, 25 tbc
ffmpeg -y -i 55.mp4 -loop 1 -framerate 30000/1001 -t 5 -i 55.png -t 0.5 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -filter_complex "[0:a]atempo=1.15,volume=1.6,pan=stereo|c0&lt;c0+0*c1|c1&lt;c0+0*c1,aeval=val(0)|-val(1) [amain]; [0:v]setpts=PTS/1.15,crop=iw/1.2:ih/1.2,scale=1280:720,setdar=16/9 [vmain]; [1:v]premultiply=inplace=1,scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[vintro]; [vintro][2][vmain][amain]concat=n=2:v=1:a=1" -vcodec libx264 -pix_fmt yuv420p -g 60 -b:v 1400k -profile:v main -level 3.1 -acodec libmp3lame -b:a 128k -ar 44100 -metadata title="" -metadata artist="" -metadata album_artist="" -metadata album="" -metadata date="" -metadata track="" -metadata genre="" -metadata publisher="" -metadata encoded_by="" -metadata copyright="" -metadata composer="" -metadata performer="" -metadata TIT1="" -metadata TIT3="" -metadata disc="" -metadata TKEY="" -metadata TBPM="" -metadata language="eng" -metadata encoder="" -bufsize 500000k -threads 0 -preset superfast out2222.mp4



The intro needs audio to concat to the audio of 55.mp4 or else concat will fail. This example uses the anullsrc filter to generate silent audio. A short duration is declared because anullsrc duration by default is infinite. The concat filter will automatically extend this shortened duration to match its associated video segment.
The width, height, and aspect ratio of the 55.png is modified with the scale, pad, and setsar filters to match those of 55.mp4.