Version 2.8 cannot be Verified by Big Sur

[Brooka]

Hi Avidemux Users,
I have been using Avidemux v. 2.7.6 for some time on an iMac, running Big Sur 11.6.3, 32Gb RAM.

I have tried to download and install Avidemux v. 2.8.
The App is downloaded from the official Avid site (it does not appear to be available from the Apple Store).
The App downloads and installs into the Applications Folder satisfactorily, however when Big Sur attempts to Verify the maker of the App, it states it cannot be Verified.

I have tried several installations and all refuse to Verify.

Can anyone offer any explanation / solution to this problem?
T.I.A., Brooka

[eumagga0x2a]

Please try whether

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xattr -d com.apple.quarantine /Applications/Avidemux_2.8.0.app/
is enough to pacify gatekeeper as Avidemux disk image is not signed. Alternatively, you can build the latest Avidemux from source:

1. Install Homebrew

2. Install required build dependencies:

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brew install cmake nasm yasm qt xvid x264 x265 libvpx aom opus fdk-aac lame libass mp4v2 a52dec
(if you want to be able to pass VapourSynth scripts to Avidemux, add "vapoursynth" to the command)

3. Get Avidemux source code:

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git clone https://github.com/mean00/avidemux2.git && cd avidemux2 && git submodule update --init --recursive
This clones the git master branch of Avidemux and the translations to the subdirectory "avidemux2" of the current directory, typically your home directory.

4. Build it:

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export MACOSX_DEPLOYMENT_TARGET=$(xcrun --sdk macosx --show-sdk-version)
bash bootStrapOsx_Catalina.bash --enable-qt6
If everything goes well, you will find the generated disk image of Avidemux 2.8.1 in the "installer" subdirectory of the "avidemux2" folder.

The required Xcode command line tools (i.e. the compiler and everything it needs) should be installed automatically by brew, it is not necessary to install the huge Xcode app for that.