[FFmpeg-user] set metadata in a jpg image

[Michael Koch]

Hello,

I want to set two exif tags in a *.jpg image, so that this image is 
recognized by Facebook as a spherical 360 image. This can be done with 
exiftool:

exiftool -overwrite_original -make="Ricoh" -model="Ricoh THETA S" test.jpg

Is it also possible to do the same thing with FFmpeg? This would 
simplify things, because the image is anyway created by FFmpeg and 
perhaps it can all be done in one command line.
I did try this command, but the metadata isn't written to the file:

ffmpeg -i test.jpg -metadata make="Ricoh" -y test2.jpg

The console output is below.

Thanks,
Michael


C:\Users\astro\Desktop\moon>ffmpeg -i test.jpg -metadata make="Ricoh" -y 
test2.jpg
ffmpeg version 2021-02-13-git-d5d6751a55-essentials_build-www.gyan.dev 
Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static 
--disable-w32threads --disable-autodetect --enable-fontconfig 
--enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp 
--enable-lzma --enable-zlib --enable-libsrt --enable-libssh 
--enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp 
--enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom 
--enable-libopenjpeg --enable-libvpx --enable-libass 
--enable-libfreetype --enable-libfribidi --enable-libvidstab 
--enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm 
--enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc 
--enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme 
--enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame 
--enable-libtheora --enable-libvo-amrwbenc --enable-libgsm 
--enable-libopencore-amrnb --enable-libopus --enable-libspeex 
--enable-libvorbis --enable-librubberband
   libavutil      56. 65.100 / 56. 65.100
   libavcodec     58.123.100 / 58.123.100
   libavformat    58. 67.100 / 58. 67.100
   libavdevice    58. 11.103 / 58. 11.103
   libavfilter     7.106.100 /  7.106.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
Input #0, image2, from 'test.jpg':
   Duration: 00:00:00.04, start: 0.000000, bitrate: 103504 kb/s
   Stream #0:0: Video: mjpeg (Baseline), yuvj444p(pc, 
bt470bg/unknown/unknown), 6000x3000 [SAR 1:1 DAR 2:1], 25 fps, 25 tbr, 
25 tbn, 25 tbc
Stream mapping:
   Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'test2.jpg':
   Metadata:
     make            : Ricoh
     encoder         : Lavf58.67.100
   Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown, 
progressive), 6000x3000 [SAR 1:1 DAR 2:1], q=2-31, 200 kb/s, 25 fps, 25 tbn
     Metadata:
       encoder         : Lavc58.123.100 mjpeg
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame=    1 fps=0.0 q=8.6 Lsize=N/A time=00:00:00.04 bitrate=N/A 
speed=0.267x
video:505kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB 
muxing overhead: unknown