somebody told me to download imagemagick, and here's output;
taro@taro-HP-Mini-110-3000:~$ cd /usr/share/mplayer/skins/default taro@taro-HP-Mini-110-3000:/usr/share/mplayer/skins/default$ for FILE in *.png > do > sudo convert $FILE -define png:format=png24 $FILE > done [sudo] password for taro: taro@taro-HP-Mini-110-3000:/usr/share/mplayer/skins/default$ mplayer plays sound but no video. ** Attachment added: "2015-07-29-062854_1024x600_scrot.png" https://bugs.launchpad.net/ubuntu/+source/mplayer/+bug/1218510/+attachment/4435797/+files/2015-07-29-062854_1024x600_scrot.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1218510 Title: Fails to open due to: PNG read error in /usr/share/mplayer/skins/default/main To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mplayer/+bug/1218510/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs