Opened 4 years ago
Closed 4 years ago
#9767 closed defect (wontfix)
rounding or +-1 error in rotate filter
| Reported by: | Michael Koch | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avfilter |
| Version: | git-master | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
It seems there is a rounding or +-1 error in the "rotate" filter, visible as artifacts at the edge. Can be reproduced as follows:
ffmpeg -f lavfi -i color=white:s=96x96 -vf drawbox=1:1:94:94:black:fill,rotate='PI/4' -frames 1 -y out.png
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No artifacts, one line is just less fat than other one. Dissapears with bilinear disabled.