[FFmpeg-user] rounding errors in v360 filter

Michael Koch astroelectronic at t-online.de
Sun Feb 23 17:24:39 EET 2020


there seem to be some rounding (or +-1) errors in the v360 filter, when 
converting from double fisheye to equirectangular. Can be reproduced as 

ffmpeg -f lavfi -i color=red:size=40x40 -f lavfi -i 
color=green:size=40x40 -lavfi 
"[0][1]hstack,v360=input=dfisheye:output=e" -frames 1 -y out.png

Please have a look at the output image and you will see what I mean. 
FFmpeg version is 3 days old.


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