> On May 19, 2024, at 10:26 AM, Michael Koch <astroelectro...@t-online.de> > wrote: > > Am 19.05.2024 um 19:02 schrieb Steven Kan: >> 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: > > It's a known problem. A workaround is described in chapter 2.70 in my book: > http://www.astro-electronic.de/FFmpeg_Book.pdf
Thanks! APNG works very well in this case: https://www.kan.org/pictures/WeightLogLapse.apng Thanks! _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
