Download and unpack a .7z archive as part of install?

[bmt22033]

I have an installer that deploys my code and most of it's dependencies. However, one of my prerequisites has a very strict redistribution license and as such, I need to download and install it manually. This particular prerequisite is actually a 7zip archive (.7z). I know it's possible to download the file via my installer but I'm wondering if it's also possible to unpack the .7z archive to a particular directory once the download is complete? Is there any support built into AI for unpacking .7z archives or would I need to include the 7-Zip .exe/.dll file in my installer in order to be able to unpack the .7z archive? Also, would I need to do this as a custom action or is there another way to accomplish it? Thanks very much!

[bmt22033]

Just a couple of updates to my question:

- I'm using AI 10.8 with an Enterprise license
- The prerequisite that I need to download and install is FFmpeg
- The URL I'll be downloading from is http://ffmpeg.zeranoe.com/builds/win32/ ... -static.7z

- It doesn't appear that AI has any kind of integrated support for unpacking .7z archives but I'm guessing that I could just include the 7zip command line utility to unpack the file after it's been downloaded (although I'm not certain how to go about doing that).

- Also, when the .7z archive is unpacked, it will unpack into a folder named ffmpeg-20140110-git-d9481dc-win32-static. This is subject to change because it's tied to the build of FFmpeg which occurs on a nightly basis. Is it possible to somehow capture this folder name and rename it to something more consistent like just "ffmpeg"?

[Daniel]

Hello,

I'm afraid we don't have predefined support for your scenario. As you already noticed, you can try to implement the desired behavior through a custom action.

If you have any questions just let us know.

All the best,
Daniel