Remote image being processed as a video

[Luiz Ferraz]

I got this on my markdown:

![xkcd about workflow](https://imgs.xkcd.com/comics/workflow.png)

Imgit tries to invoke ffmpeg and convert it to av1, which throws this error:

21:00:09 [ERROR] [vite] [imgit] Command failed: ffmpeg -y -loglevel error -i "/home/lotus/Workspace/blog/public/imgit/fetched/imgs.xkcd.com-comics-workflow.png" -c:v libaom-av1 -still-picture 1 -crf 23 -cpu-used 5 -an -filter_complex "[0:v]scale=iw*1:-1" "/home/lotus/Workspace/blog/public/imgit/encoded/[e-mail]"
Unrecognized option 'still-picture'.
Error splitting the argument list: Option not found

ffmpeg info:

ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.3.0 (GCC)
  configuration: --disable-static --prefix=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0 --target_os=linux --arch=x86_64 --pkg-config=pkg-config --enable-gpl --enable-version3 --disable-nonfree --enable-shared --enable-pic --disable-small --enable-runtime-cpudetect --disable-gray --enable-swscale-alpha --enable-hardcoded-tables --enable-safe-bitstream-reader --enable-pthreads --disable-w32threads --disable-os2threads --enable-network --enable-pixelutils --datadir=/nix/store/5zl2754g2r43yp553634fzbligcvj172-ffmpeg-6.0-data/share/ffmpeg --enable-ffmpeg --disable-ffplay --enable-ffprobe --bindir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0-bin/bin --enable-avcodec --enable-avdevice --enable-avfilter --enable-avformat --enable-avutil --enable-postproc --enable-swresample --enable-swscale --libdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0-lib/lib --incdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0-dev/include --enable-doc --enable-htmlpages --enable-manpages --mandir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0-man/share/man --enable-podpages --enable-txtpages --docdir=/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-ffmpeg-6.0-doc/share/doc/ffmpeg --enable-alsa --enable-bzlib --disable-libcelt --disable-cuda --disable-cuda-llvm --enable-libdav1d --disable-libfdk-aac --disable-libflite --enable-fontconfig --enable-libfreetype --disable-frei0r --disable-libfribidi --disable-libgme --enable-gnutls --disable-libgsm --disable-ladspa --enable-libmp3lame --disable-libaom --enable-libass --disable-libbluray --disable-libbs2b --disable-libdc1394 --enable-libdrm --enable-iconv --disable-libjack --disable-libmfx --disable-libmodplug --disable-libmysofa --enable-libopus --disable-librsvg --enable-libsrt --enable-libssh --disable-libtensorflow --enable-libtheora --enable-libv4l2 --enable-v4l2-m2m --enable-vaapi --enable-vdpau --enable-libvorbis --disable-libvmaf --enable-libvpx --disable-libwebp --disable-xlib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-libxcb-shape --disable-libxml2 --enable-lzma --enable-cuvid --enable-nvdec --enable-nvenc --disable-openal --disable-opencl --disable-libopencore-amrnb --disable-opengl --disable-libopenh264 --disable-libopenjpeg --disable-libopenmpt --enable-libpulse --disable-librav1e --enable-libsvtav1 --disable-librtmp --enable-sdl2 --enable-libsoxr --enable-libspeex --disable-libvidstab --disable-libvo-amrwbenc --enable-libx264 --enable-libx265 --disable-libxavs --enable-libxvid --disable-libzmq --enable-libzimg --enable-zlib --disable-vulkan --disable-libglslang --disable-libsmbclient --disable-debug --enable-optimizations --disable-extra-warnings --disable-stripping
  libavutil      58.  2.100 / 58.  2.100
  libavcodec     60.  3.100 / 60.  3.100
  libavformat    60.  3.100 / 60.  3.100
  libavdevice    60.  1.100 / 60.  1.100
  libavfilter     9.  3.100 /  9.  3.100
  libswscale      7.  1.100 /  7.  1.100
  libswresample   4. 10.100 /  4. 10.100
  libpostproc    57.  1.100 / 57.  1.100
Hyper fast Audio and Video encoder

[Artyom Sovetnikov]

I don't think it's trying to convert it to a video (the output file is .avif), but rather your build of ffmpeg is either missing libaom or it's an older version, which doesn't support still-picture option (hence the "Unrecognized option 'still-picture'" error).

[Artyom Sovetnikov]

To check if libaom is enabled, you can try ffmpeg -buildconf; it should list --enable-libaom in the output. Unfortunately, there doesn't seem to be a way to check actual version of a lib with ffmpeg. You can try manually encoding an image with the still-picture option, to check if it supports it, eg: ffmpeg -i ./img.png -c:v libaom-av1 -still-picture 1 img.avif. I've tested with ffmpeg installed on Ubuntu 13.2.0 via apt, seem to work ok.

[Luiz Ferraz]

Got it. Probably due to how Nix builds it. I'll try to figure it out.
It works on a separate machine with the same code.
Thanks!