I have a series of 476 PNGs, exported from Excel in a loop through a series of values to control the plotted range:
https://www.kan.org/download/1.png https://www.kan.org/download/2.png https://www.kan.org/download/3.png https://www.kan.org/download/4.png https://www.kan.org/download/5.png etc. If I convert them to MP4: ffmpeg -i %d.png -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2,scale=1920:-1" -c:v libx264 -y WeightLogLapse.mp4 the resulting video looks as I would expect: https://www.kan.org/download/WeightLogLapse.mp4 But if I convert to GIF: ffmpeg -i %d.png -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2,scale=1920:-1" -y WeightLogLapse.gif I get this weird color aliasing: https://www.kan.org/download/WeightLogLapse.gif Am I doing this incorrectly? Thanks! ffmpeg -i %d.png -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2,scale=1920:-1" -y WeightLogLapse.gif ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers built with Apple clang version 13.1.6 (clang-1316.0.21.2.5) configuration: --prefix=/Volumes/tempdisk/sw --extra-cflags=-fno-stack-check --arch=arm64 --cc=/usr/bin/clang --enable-gpl --enable-libvmaf --enable-libopenjpeg --enable-libopus --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libvpx --enable-libwebp --enable-libass --enable-libfreetype --enable-fontconfig --enable-libtheora --enable-libvorbis --enable-libsnappy --enable-libaom --enable-libvidstab --enable-libzimg --enable-libsvtav1 --enable-libharfbuzz --enable-libkvazaar --pkg-config-flags=--static --enable-ffplay --enable-postproc --enable-neon --enable-runtime-cpudetect --disable-indev=qtkit --disable-indev=x11grab_xcb libavutil 59. 8.100 / 59. 8.100 libavcodec 61. 3.100 / 61. 3.100 libavformat 61. 1.100 / 61. 1.100 libavdevice 61. 1.100 / 61. 1.100 libavfilter 10. 1.100 / 10. 1.100 libswscale 8. 1.100 / 8. 1.100 libswresample 5. 1.100 / 5. 1.100 libpostproc 58. 1.100 / 58. 1.100 Input #0, image2, from '%d.png': Duration: 00:00:18.64, start: 0.000000, bitrate: N/A Stream #0:0: Video: png, rgba(pc, gbr/bt709/iec61966-2-1), 2808x1550 [SAR 5669:5669 DAR 1404:775], 25 fps, 25 tbr, 25 tbn Stream mapping: Stream #0:0 -> #0:0 (png (native) -> gif (native)) Press [q] to stop, [?] for help Output #0, gif, to 'WeightLogLapse.gif': Metadata: encoder : Lavf61.1.100 Stream #0:0: Video: gif, bgr8(pc, gbr/bt709/iec61966-2-1, progressive), 1920x1060 [SAR 6201:6200 DAR 1404:775], q=2-31, 200 kb/s, 25 fps, 100 tbn Metadata: encoder : Lavc61.3.100 gif [out#0/gif @ 0x600001210000] video:13110KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.000149% frame= 466 fps= 31 q=-0.0 Lsize= 13110KiB time=00:00:18.64 bitrate=5761.8kbits/s speed=1.23x _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
