Support ARM chip

[JokChen]

I found that the current MAC software does not support ARM well. When custom FFMPEG paths, the error will be reported. The specific content is as follows:
"The Selected File Does Not Appear to Be A USable FFMPEG AVFORMAT Library.
We have collected a more detailed log. Do you want to save it to disk? "
Will you support the chip of the Apple M series in the future?

[ChristianFeldmann]

Hi. As I pointed out here: #523 (comment) currently YUView is not building natively on Arm. One issue I am having is that I don't own an M1 mac. Feel free to send me one ;)
Also Qt is currently not building natively on mac so the only way to use FFmpeg in YUView is to get a x64 build of it so that it all runs in the emulation layer.

[frankplow]

To confirm, using x86_64 FFmpeg shared libraries works on M1 macs. To cross-compile for x86_64 from arm64 using Apple clang (as I suspect most will want to do to get this working), you configure the FFmpeg build with--cc="clang -arch x86_64"

[ulfzie]

Hi,
Just wanted to add another option to enable the use of ffmpeg and yuview with the help of homebrew:
Install X86_64 brew:

arch  -x86_64 /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Install FFMPEG v5 (v6 is not supported by YUView)

/usr/local/bin/brew install ffmpeg@5

Add libraries to YUView:

mkdir /Applications/YUView.app/Contents/MacOS/ffmpeg
cp  -r /usr/local/Cellar/ffmpeg@5/5.1.3/lib/* /Applications/YUView.app/Contents/MacOS/ffmpeg

Ulf