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ffmpeg -f lavfi -i color=color=black -loop 1 -i logo.png -filter_complex "\ [1:0] format=rgba,fade=in:st=0:d=3:alpha=1,fade=out:st=6:d=3:alpha=1 [ovr];\ [0:0][ovr] overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2\ " -t 10 -y out.gif |
format=rgba
- use RGB format with alpha channel for transparency
fade=in:st=0:d=3:alpha=1,fade=out:st=6:d=3:alpha=1
- fade in starting at 0s for 3s with alpha, fade out starting at 6s for 3s with alpha.
overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2
- overlay centered on source