I was trying to install Lightworks 11.5.1 (amd64) on Ubuntu 14.04(amd64) but there's a notice: Dependency is not satisfiable: libtiff4. Is there anyway to solve this dependency issue? Thanks in advance.
2 Answers
Lightworks 11.5.1 is only compatible with Ubuntu 13.10, see the following specs:
http://www.lwks.com/index.php?option=com_content&view=article&id=118&tmpl=component
14.04 provides libtiff5 but not libtiff4 (up to saucy 13.10).
To install the 13.10 amd64 version, go to the download page and select libtiff4_3.9.7-2ubuntu1_amd64.deb
.
Now open a Terminal with Ctrl+Alt+t and type in the folder where you downloaded the deb file:
sudo dpkg -i ./libtiff4_3.9.7-2ubuntu1_amd64.deb
Then try again to open lwks-11.5.1-amd64.deb
with the Software Center to continue the installation.

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Per this sticky on the Lightworks forum, this bug has been fixed in the latest beta release 11.5.2a, which you can download from the downloads page.
For more information see the changelog.
If you prefer to use the stable version Sylvain's answer works.
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I seem to be unable to download the beta version. All I get when I click on the provided link is a form to sign up for their website. The links for stable versions work fine though – byf-ferdy Jun 02 '14 at 15:59
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@byf-ferdy It looks like you're right, you do have to sign in. However, since you need to do that anyway, before using the application I guess it doesn't matter much. – Seth Jun 04 '14 at 01:51
/usr/lib/x86_64-linux-gnu/libtiff.so.5
and libtiff4/usr/lib/x86_64-linux-gnu/libtiff.so.4
– Sylvain Pineau May 16 '15 at 15:54