Hi! ffmpeg -i a.png b.png ffmpeg -f image2 -i a.png b.png ffmpeg -f image2 -vcodec png -i a.png b.png works but ffmpeg -f image2pipe -vcodec png -i a.png b.png won't work because only 4096 bytes are returned from img_read_packet. My patch now returns the whole image. Request for comment. cu Peter