I don't know. PNG is a different format and uses a different encoder. You can look at the source, post to the ffmpeg-user mailing list, or ask on the #ffmpeg IRC channel to find out more.
-- Can't create jpg thumbnails in Intrepid https://bugs.launchpad.net/bugs/320720 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
