FFmpegTrademark Dispute

The FFmpeg project posted a note about a legal threat that concerned the logo for the project.  FFmpeg says the threat comes from “a previous root admin of FFmpeg, who now is root admin of the Libav fork of FFmpeg.”  The threat claimed a copyright on the diagonal line logo.  FFmpeg replaced it with a new version, which represents the shape with different shading and contours.  FFmpeg posted an email suggesting that the claimant did not come up with the original shape, only a particular rendering of it.