Hi,

In changelog of libvpx we can read : 
- Upgrading:
This release is ABI incompatible with 1.5.0 due to a new 'color_range' enum
in vpx_image and some minor changes to the VP8_COMP structure.
The default key frame interval for VP9 has changed from 128 to 9999.
source : https://chromium.googlesource.com/webm/libvpx/+/master/CHANGELOG

So you can't create a symbolic link from libvpx.so.3 to libvpx.so.4, you need try to rebuild the library.

Kind regards

On Tue, Oct 11, 2016 at 10:31 AM, Ed Greshko <ed.greshko@greshko.com> wrote:


On 10/11/16 15:56, Joachim Backes wrote:
> Hi testers,
>
> I'm trying to install the F24 version of VirtualBox in F25 because no F25 version is
> available
>
> Anybody tried this and was successful?
>
> I'm experiencing this error:
>
> sudo dnf install VirtualBox-5.1-5.1.6_110634_fedora24-1.x86_64.rpm
> Last metadata expiration check: 3:04:28 ago on Tue Oct 11 06:49:21 2016.
> Error: *nothing provides libvpx.so.3()(64bit)* needed by
> VirtualBox-5.1-5.1.6_110634_fedora24-1.x86_64
> (try to add '--allowerasing' to command line to replace conflicting packages)
>
> All comments are welcome.
>

I have not tried to install it....  But the answer is libvpx-1.5.0-4.fc24.x86_64 in F24
provides /usr/lib/libvpx.so.3 while in F25 libvpx-1.6.0-1.fc25.x86_64.rpm is the new
package which provides the newer version /usr/lib/libvpx.so.4.

So, I guess you can try to download the source and try to rebuild it yourself for the F25
environment.  :-)

--
You're Welcome Zachary Quinto
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