$ ffmpeg -framerate 1 -pattern_type glob -i '*.png' -lossless 1 Fazenda.webm
ffmpeg version 4.1.3-1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-7)
  configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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 '*.png':
  Duration: 00:01:00.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1280x1280 [SAR 4724:4724 DAR 1:1], 1 fps, 1 tbr, 1 tbn, 1 tbc
File 'Fazenda.webm' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x7fffba4a6180] v1.7.0
Output #0, webm, to 'Fazenda.webm':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: vp9 (libvpx-vp9), yuva420p, 1280x1280 [SAR 1:1 DAR 1:1], q=-1--1, 200 kb/s, 1 fps, 1k tbn, 1 tbc
    Metadata:
      encoder         : Lavc58.35.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=   60 fps=2.8 q=0.0 Lsize=   26758kB time=00:00:38.00 bitrate=5768.3kbits/s speed=1.79x
video:26754kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.015148%