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• ffmpeg converting JPG slideshow to MKV

  17 décembre 2018, par phol

  I am trying to convert a set of jpg files to a slideshow with varying durations using ffconcat

  output.txt contents :

  ffconcat version 1.0
  
  file slide_0001.jpg
  
  duration 0.163
  
  file slide_0002.jpg
  
  duration 0.533
  
  file slide_0003.jpg
  
  duration 1.067
  
  file slide_0004.jpg
  
  duration 0.533
  
  file slide_0005.jpg
  
  etc.

  FFmpeg command :

  ffmpeg -i output.txt output.mkv

  I also tried :

  ffmpeg -i output.txt -c:v copy output.mkv

  However, when converting, the colours of the images become skewed.
  White becomes pink / purple and dark green becomes light green.
  The same happens when choosing different codecs and containers.
  Is there a way to solve this ?

  EDIT :
  I performed the same conversion again. I attached the log output as requested.
  However, in the meantime I have figured out that converting without ffconcat duration and then altering timecodes with mp4fpsmod is more efficient in terms of storage (3 vs 40 MB) and gives less issues in different players. The result is nonetheless the same : colours are still wrong, both on my workstation (Ubuntu 18.04) and laptop (macOS Mojave).

  I tried to alter things with pix_fmt and -vf format as can be seen in the second log output. This did not solve the problem.

  Background info :
  The input jpg files are from a lecture recording made with MediaSite, which has both a video stream for the room as well as this slideshow stream for the slides.

  Example of input :
  
  Example of output :
  
  log output MKV conversion :

      $ ffmpeg -i outputnew.txt output12345.mkv
  
  ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gpl --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-opencl --enable-videotoolbox
  
  libavutil      56. 22.100 / 56. 22.100
  
  libavcodec     58. 35.100 / 58. 35.100
  
  libavformat    58. 20.100 / 58. 20.100
  
  libavdevice    58.  5.100 / 58.  5.100
  
  libavfilter     7. 40.101 /  7. 40.101
  
  libavresample   4.  0.  0 /  4.  0.  0
  
  libswscale      5.  3.100 /  5.  3.100
  
  libswresample   3.  3.100 /  3.  3.100
  
  libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, concat, from 'outputnew.txt':
  
  Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x7fb284802800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7fb284802800] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-bit
  
  [libx264 @ 0x7fb284802800] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, matroska, to 'output12345.mkv':
  
  Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuvj444p(pc), 1280x720, q=-1--1, 25 fps, 1k tbn, 25 tbc
  
      Metadata:
  
      encoder         : Lavc58.35.100 libx264
  
      Side data:
  
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  [mjpeg @ 0x7fb284061200] EOI missing, emulating=00:02:12.96 bitrate= 491.3kbits/s speed=14.3x        
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 487.2kbits/s speed=14.3x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 333.0kbits/s speed=22.3x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 338.8kbits/s speed=22.7x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 164.7kbits/s speed=41.6x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 122.7kbits/s speed=55.7x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 111.2kbits/s speed=60.5x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte= 105.3kbits/s speed=64.4x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  82.2kbits/s speed=82.7x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  79.7kbits/s speed=85.8x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  59.7kbits/s speed= 114x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  53.8kbits/s speed= 127x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  54.7kbits/s speed= 124x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  47.1kbits/s speed= 143x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  47.0kbits/s speed= 144x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  44.6kbits/s speed= 151x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  34.4kbits/s speed= 194x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  32.9kbits/s speed= 204x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  32.8kbits/s speed= 203x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  32.6kbits/s speed= 202x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  28.8kbits/s speed= 229x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  27.9kbits/s speed= 236x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  27.9kbits/s speed= 233x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  23.9kbits/s speed= 274x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  24.2kbits/s speed= 273x    
  
      Last message repeated 2 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  24.2kbits/s speed= 274x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  24.0kbits/s speed= 276x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  24.2kbits/s speed= 273x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  23.6kbits/s speed= 278x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  23.7kbits/s speed= 279x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  23.6kbits/s speed= 279x    
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  24.0kbits/s speed= 276x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  23.5kbits/s speed= 281x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  20.4kbits/s speed= 325x    
  
  [mjpeg @ 0x7fb28502a000] EOI missing, emulating
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  20.1kbits/s speed= 329x    
  
      Last message repeated 1 times
  
  [matroska @ 0x7fb284812e00] Starting new cluster due to timestampte=  20.1kbits/s speed= 330x    
  
  frame=  635 fps= 14 q=-1.0 Lsize=   37389kB time=04:22:06.76 bitrate=  19.5kbits/s speed= 343x    
  
  video:37378kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.029620%
  
  [libx264 @ 0x7fb284802800] frame I:16    Avg QP:11.98  size:154224
  
  [libx264 @ 0x7fb284802800] frame P:184   Avg QP:13.30  size: 79029
  
  [libx264 @ 0x7fb284802800] frame B:435   Avg QP:13.19  size: 48887
  
  [libx264 @ 0x7fb284802800] consecutive B-frames:  6.0%  4.4% 10.9% 78.7%
  
  [libx264 @ 0x7fb284802800] mb I  I16..4: 55.7%  0.0% 44.3%
  
  [libx264 @ 0x7fb284802800] mb P  I16..4: 32.4%  0.0% 21.5%  P16..4: 13.3% 15.1% 11.3%  0.0%  0.0%    skip: 6.4%
  
  [libx264 @ 0x7fb284802800] mb B  I16..4: 17.8%  0.0%  7.2%  B16..8: 19.1% 19.4%  6.5%  direct:14.6%  skip:15.3%  L0:47.0% L1:38.9% BI:14.1%
  
  [libx264 @ 0x7fb284802800] coded y,u,v intra: 63.7% 26.1% 56.3% inter: 46.5% 24.6% 43.5%
  
  [libx264 @ 0x7fb284802800] i16 v,h,dc,p: 19% 18% 58%  4%
  
  [libx264 @ 0x7fb284802800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 20% 25%  4%  4%  3%  3%  3%  3%
  
  [libx264 @ 0x7fb284802800] Weighted P-Frames: Y:5.4% UV:5.4%
  
  [libx264 @ 0x7fb284802800] ref P L0: 43.2%  4.4% 30.8% 21.4%  0.2%
  
  [libx264 @ 0x7fb284802800] ref B L0: 64.1% 27.3%  8.6%
  
  [libx264 @ 0x7fb284802800] ref B L1: 85.3% 14.7%
  
  [libx264 @ 0x7fb284802800] kb/s:19.25

  Log output mp4 conversion :

  $ ffmpeg -i slide_%04d.jpg -vf format=rgba -pix_fmt yuv420p -vcodec libx264 -movflags +faststart -preset veryslow output12345.mp4
  
  ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gpl --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-opencl --enable-videotoolbox
  
  libavutil      56. 22.100 / 56. 22.100
  
  libavcodec     58. 35.100 / 58. 35.100
  
  libavformat    58. 20.100 / 58. 20.100
  
  libavdevice    58.  5.100 / 58.  5.100
  
  libavfilter     7. 40.101 /  7. 40.101
  
  libavresample   4.  0.  0 /  4.  0.  0
  
  libswscale      5.  3.100 /  5.  3.100
  
  libswresample   3.  3.100 /  3.  3.100
  
  libpostproc    55.  3.100 / 55.  3.100
  
  Input #0, image2, from 'slide_%04d.jpg':
  
  Duration: 00:00:25.36, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  File 'output12345.mp4' already exists. Overwrite ? [y/N] y
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0x7fb7e280b000] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0x7fb7e1803c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x7fb7e1803c00] profile High, level 5.0
  
  [libx264 @ 0x7fb7e1803c00] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=10 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=60 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output12345.mp4':
  
  Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
      encoder         : Lavc58.35.100 libx264
  
      Side data:
  
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  [mp4 @ 0x7fb7e1801800] Starting second pass: moving the moov atom to the beginning of the file     
  
  frame=  634 fps=8.5 q=-1.0 Lsize=    2252kB time=00:00:25.24 bitrate= 731.0kbits/s speed=0.337x    
  
  video:2245kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.307448%
  
  [libx264 @ 0x7fb7e1803c00] frame I:5     Avg QP:19.12  size: 49393
  
  [libx264 @ 0x7fb7e1803c00] frame P:131   Avg QP:22.18  size:  9379
  
  [libx264 @ 0x7fb7e1803c00] frame B:498   Avg QP:23.78  size:  1652
  
  [libx264 @ 0x7fb7e1803c00] consecutive B-frames:  3.2%  1.6%  3.3% 29.7%  7.9% 16.1%  7.7% 16.4% 14.2%
  
  [libx264 @ 0x7fb7e1803c00] mb I  I16..4: 45.7% 37.9% 16.4%
  
  [libx264 @ 0x7fb7e1803c00] mb P  I16..4:  6.0%  5.3%  1.3%  P16..4: 19.9%  1.9%  3.7%  0.3%  0.1%    skip:61.5%
  
  [libx264 @ 0x7fb7e1803c00] mb B  I16..4:  0.3%  0.4%  0.1%  B16..8: 17.5%  1.0%  0.2%  direct: 0.3%  skip:80.2%  L0:52.3% L1:46.9% BI: 0.8%
  
  [libx264 @ 0x7fb7e1803c00] 8x8 transform intra:43.0% inter:48.9%
  
  [libx264 @ 0x7fb7e1803c00] direct mvs  spatial:99.2% temporal:0.8%
  
  [libx264 @ 0x7fb7e1803c00] coded y,uvDC,uvAC intra: 16.9% 25.8% 16.6% inter: 1.1% 1.9% 1.2%
  
  [libx264 @ 0x7fb7e1803c00] i16 v,h,dc,p: 61% 28%  6%  6%
  
  [libx264 @ 0x7fb7e1803c00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20%  9% 50%  3%  4%  3%  3%  3%  5%
  
  [libx264 @ 0x7fb7e1803c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 23% 19%  5%  7%  6%  6%  5% 10%
  
  [libx264 @ 0x7fb7e1803c00] i8c dc,h,v,p: 46% 40% 13%  1%
  
  [libx264 @ 0x7fb7e1803c00] Weighted P-Frames: Y:5.3% UV:5.3%
  
  [libx264 @ 0x7fb7e1803c00] ref P L0: 33.2%  3.1% 11.6%  7.3%  8.8%  6.4%  6.5%  3.1%  3.2%  2.6%  2.4%  2.5%  2.8%  2.8%  2.3%  1.4%
  
  [libx264 @ 0x7fb7e1803c00] ref B L0: 42.0% 15.1% 12.0%  5.4%  4.9%  4.3%  4.0%  1.9%  2.0%  1.8%  1.7%  1.8%  1.7%  1.1%  0.5%
  
  [libx264 @ 0x7fb7e1803c00] ref B L1: 83.5% 16.5%
  
  [libx264 @ 0x7fb7e1803c00] kb/s:725.10

  Player :
  QuickTime, VLC and Kodi on both Linux and Mac.

  EDIT 2 :
  Input files : https://drive.google.com/open?id=1kbBkSDSwe6ywgQ8lkjqkh-MKCzGA4bj8

• avcodec : move content light level SEI handling to h2645_sei

  12 juillet 2023, par Jan Ekström

  avcodec : move content light level SEI handling to h2645_sei
  This allows this common H.274 SEI to be parsed from both H.264
  
  as well as HEVC, as well as probably from VVC in the future.
  Generally attempts to keep the original code as similar as possible.
  FATE test refererence changes only change the order of side data
  
  export within a single frame. Nothing else seems to have changed.
  

  • [DH] libavcodec/h2645_sei.c
  • [DH] libavcodec/h2645_sei.h
  • [DH] libavcodec/h264_slice.c
  • [DH] libavcodec/hevc_sei.c
  • [DH] libavcodec/hevc_sei.h
  • [DH] libavcodec/hevcdec.c
  • [DH] tests/ref/fate/hevc-hdr-vivid-metadata
  • [DH] tests/ref/fate/hevc-hdr10-plus-metadata

• Getting a lot of Tail Silence when combining an image and audio into mp4 movie

  1er avril 2023, par Meryan

  As it can be seen from this snapshot the audio HELLO.mp3 combined with bitmap HELLO.jpg produced a movie HELLO_aac.mp4 that has a huge amount of tail silence

  


  

  


  The command line I was helped to put together is the following

  


  ======================== 
IN_FILES=-i ".\HELLO.JPG" -i ".\HELLO.MP3"    
OUT_FILE=".\HELLO_aac.MP4"   
EXE="S:\_BINS\FFmpeg 4.2.1 20200112\bin\ffmpeg.exe"  
OPTIONS= -loop 1   -i ".\HELLO.JPG" -i ".\HELLO.MP3"    -vf "scale=-1:1080,pad=1920:1080:(1920-iw)/2:(1080-ih)/2,setsar=1"  -c:v libx264 -profile:v main -pix_fmt yuv420p -r 24 -video_track_timescale 24000    -c:a aac    -shortest -y ".\HELLO_aac.MP4"     
======================== 



  


  Here is the captured output from FFmpeg

  


  ffmpeg version git-2020-01-10-3d894db Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20191125
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 38.100 / 56. 38.100
  libavcodec     58. 65.103 / 58. 65.103
  libavformat    58. 35.101 / 58. 35.101
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 70.101 /  7. 70.101
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, image2, from '.\HELLO.JPG':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 23923 kb/s
    Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1600x1200 [SAR 120:120 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
[mp3 @ 000002019015d4c0] Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from '.\HELLO.MP3':
  Metadata:
    genre           : Blues
    id3v2_priv.XMP  : <?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\x0a\x0a \x0a  s
    Stream #1:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  Stream #1:0 -> #0:1 (mp3 (mp3float) -> aac (native))
Press [q] to stop, [?] for help
[swscaler @ 0000020190b10380] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0000020190b10380] Warning: data is not aligned! This can lead to a speed loss
[libx264 @ 0000020190759300] using SAR=1/1
[libx264 @ 0000020190759300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000020190759300] profile Main, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000020190759300] 264 - core 158 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=34 lookahead_threads=5 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '.\HELLO_aac.MP4':
  Metadata:
    encoder         : Lavf58.35.101
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 24k tbn, 24 tbc
    Metadata:
      encoder         : Lavc58.65.103 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 69 kb/s
    Metadata:
      encoder         : Lavc58.65.103 aac
frame=   69 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 drop=1 speed=   0x    
frame=   97 fps=0.0 q=-1.0 Lsize=     128kB time=00:00:03.91 bitrate= 267.1kbits/s dup=0 drop=2 speed=5.04x    
video:119kB audio:6kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.208101%
[libx264 @ 0000020190759300] frame I:1     Avg QP:12.88  size:103994
[libx264 @ 0000020190759300] frame P:24    Avg QP:14.05  size:   224
[libx264 @ 0000020190759300] frame B:72    Avg QP:12.67  size:   160
[libx264 @ 0000020190759300] consecutive B-frames:  1.0%  0.0%  0.0% 99.0%
[libx264 @ 0000020190759300] mb I  I16..4: 61.7%  0.0% 38.3%
[libx264 @ 0000020190759300] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.5%  0.1%  0.0%  0.0%  0.0%    skip:99.3%
[libx264 @ 0000020190759300] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.6%  0.0%  0.0%  direct: 0.0%  skip:98.4%  L0:81.1% L1:18.9% BI: 0.0%
[libx264 @ 0000020190759300] coded y,uvDC,uvAC intra: 34.5% 17.3% 15.6% inter: 0.0% 0.1% 0.0%
[libx264 @ 0000020190759300] i16 v,h,dc,p: 70% 19%  7%  3%
[libx264 @ 0000020190759300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 22% 12%  4%  5%  5%  3%  5%  4%
[libx264 @ 0000020190759300] i8c dc,h,v,p: 80%  8% 10%  2%
[libx264 @ 0000020190759300] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000020190759300] ref P L0: 97.6%  0.3%  1.5%  0.6%
[libx264 @ 0000020190759300] ref B L0:  1.8% 98.2%
[libx264 @ 0000020190759300] ref B L1: 99.9%  0.1%
[libx264 @ 0000020190759300] kb/s:239.28
[aac @ 000002019075bf40] Qavg: 8004.814
======================== 


  


  I have also tried the following command line

  


  "S:\_BINS\ffmpeg-2023-03-20\bin\ffmpeg.exe" -loop 1 -i "HELLO.JPG" -i "HELLO.MP3" -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -y -shortest "HELLO_aac.mp4"    


  


  With similar long dead tail silence ???