Try this: http://tagavalgal.blogspot.com/2011/11/quicktime-demuxer-not-found-in-ubuntu.html
After executing mv ~/.gstreamer-0.10/registry*.bin ~/.gstreamer-0.10/registry*.bin.org the problem was solved
Try this: tagavalgal. blogspot. com/2011/ 11/quicktime- demuxer- not-found- in-ubuntu. html
http://
After executing 0.10/registry* .bin ~/.gstreamer- 0.10/registry* .bin.org
mv ~/.gstreamer-
the problem was solved