Can't convert PNG to ICO

[xavier-GitHub76]

Hello,

ffmpeg seems to be able to convert an image to ICO format

but the click on "Convert" is without effect

Regards

[C4illin]

can you convert other images? png to ico works here

[Aymendje]

ffmpeg wont convert images bigger than 256x256

[vost#0:0/bmp @ 0x5911946e9c0] Error initializing output stream: 
Conversion failed!

Failed to convert ./data/uploads/141871016628241/44/371766004-81c5a803-2ba4-4a3e-ae30-2a1228948374.bmp from bmp to ico using ffmpeg. error: Error: Command failed: ffmpeg -i "./data/uploads/141871016628241/44/371766004-81c5a803-2ba4-4a3e-ae30-2a1228948374.bmp" "./data/output/141871016628241/44/371766004-81c5a803-2ba4-4a3e-ae30-2a1228948374.ico"
ffmpeg version 6.0.1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.1 (Alpine 12.2.1_git20220924-r10) 20220924
  configuration: --prefix=/usr --disable-librtmp --disable-lzma --disable-static --disable-stripping --enable-avfilter --enable-gnutls --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopenmpt --enable-libopus --enable-libplacebo --enable-libpulse --enable-librist --enable-libsoxr --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-lto --enable-pic --enable-postproc --enable-pthreads --enable-shared --enable-vaapi --enable-vdpau --enable-vulkan --optflags=-O3 --enable-libjxl --enable-libsvtav1 --enable-libvpl
  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   5.  0.100 /  5.  0.100
  libpostproc    57.  1.100 / 57.  1.100
Input #0, bmp_pipe, from './data/uploads/141871016628241/44/371766004-81c5a803-2ba4-4a3e-ae30-2a1228948374.bmp':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: bmp, bgr24, 1767x630, 25 fps, 25 tbr, 25 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (bmp (native) -> bmp (native))
Press [q] to stop, [?] for help
[ico @ 0x5911ade8540] Unsupported dimensions 1767x630 (dimensions cannot exceed 256x256)
[out#0/ico @ 0x5911a6a1c40] Could not write header (incorrect codec parameters ?): Invalid argument
[vost#0:0/bmp @ 0x5911946e9c0] Error initializing output stream: 
Conversion failed!

Also, the error you are seeing in the console is unrelated

@C4illin ideally we might want some kind of chart / extension for each of the converters to add specific constraints (ie : convert ico cant be bigger than 265x265, or warning when converting gif to png that only the first frame is kept, etc.)
Also maybe adding custom argument (ie : in ffmpeg, you can rescale an image by adding some scale argument)

[C4illin]

I think that in this case it might be easier to just resize the image automatically with ffmpeg?