Yes, I tried, but this only works if your sequence has the '-' before the numeric elements. You can see they comment that in the thread, by saying you have to remove the '-' from the expression.
$ ffmpeg -v debug -start_number -24 -i Comentaris_prova_%05d.png out.mkv ffmpeg version 2020-10-17-git-62073cfa97-essentials_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers built with gcc 10.2.0 (Rev3, 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. 60.100 / 56. 60.100 libavcodec 58.111.101 / 58.111.101 libavformat 58. 62.100 / 58. 62.100 libavdevice 58. 11.102 / 58. 11.102 libavfilter 7. 87.100 / 7. 87.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument 'debug'. Reading option '-start_number' ... matched as AVOption 'start_number' with argument '-24'. Reading option '-i' ... matched as input url with argument 'Comentaris_prova_%05d.png'. Reading option 'out.mkv' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set logging level) with argument debug. Successfully parsed a group of options. Parsing a group of options: input url Comentaris_prova_%05d.png. Successfully parsed a group of options. Opening an input file: Comentaris_prova_%05d.png. [image2 @ 000001742817d100] Could find no file with path 'Comentaris_prova_%05d.png' and index in the range -24--20 Comentaris_prova_%05d.png: No such file or directory _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".