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I tried VLC and mplayer, but both failed to play video file with .vmw extension. I have given the following message

Required plugin could not be found

Python (v2.7) requires to install plugins to play media files of the following type: video/x-asf-unknown decoder

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Note: Below answers suggesting to install w32codecs from medibuntu.org will not work anymore. See Any new way to install w32codecs / w64codecs through apt-get? regarding this package. –  LiveWireBT Mar 20 at 10:19
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2 Answers 2

You can go here and add the ppa. Then type in the terminal sudo apt-get update once done open the software center and search for w32 codecs or w64 codecs which ever your computer needs, also search in the software center for Ubuntu-Restricted-Extras install these and I am sure this should fix your issue

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thanks for help ... but when i typed the first command i got an error (ERROR: certificate common name mail.pocentek.net' doesn't match requested host name www.medibuntu.org'. To connect to www.medibuntu.org insecurely, use `--no-check-certificate') –  azaer Jan 11 '13 at 13:47
    
Maybe just try installing Ubuntu restricted extras that might work for what ya need. I am not sure why you got an error message, but I am sure the ubuntu restricted extras should work you can find it in the software center –  rstreeter78 Jan 11 '13 at 14:04
    
you can copy and paste the command into a terminal, cause when we type commands in the terminal sometimes we mistype something –  rstreeter78 Jan 11 '13 at 14:06
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Add the medibuntu repository

sudo -E wget --output-document=/etc/apt/sources.list.d/medibuntu.list http://www.medibuntu.org/sources.list.d/$(lsb_release -cs).list && sudo apt-get --quiet update && sudo apt-get --yes --quiet --allow-unauthenticated install medibuntu-keyring && sudo apt-get --quiet update

Then install all the needed packages, and then some.

sudo apt-get install app-install-data-medibuntu apport-hooks-medibuntu w32codecs ubuntu-restricted-extras

You can nou play almost any media file.
Note: change the w32codecs to w64codecs i you have a 64bit computer!

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thanks for help ... but when i typed the first command i got an error (ERROR: certificate common name mail.pocentek.net' doesn't match requested host name www.medibuntu.org'. To connect to www.medibuntu.org insecurely, use `--no-check-certificate') –  azaer Jan 11 '13 at 13:45
    
@azaer try this sudo apt-get install -f it might! work. –  blade19899 Jan 14 '13 at 12:12
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