[Cin] Creating AppImage

[Phyllis Smith]

*Subject:  AppImage with Hardware Acceleration*
After experimenting with different AppImages created on different
computers, different Operating Systems with different graphics cards and
different vaapi/vdpau libraries installed, or none of these libraries
installed, I think I can safely conclude the following:

1) Hardware acceleration, vaapi or vdpau, works the same running either the
created binary or the created AppImage from that binary on that same
computer.
2) Hardware acceleration using an AppImage created on another computer
running a different Operating System or even just a different level of
Operating System, most likely will  not work unless the user's computer
just happens to have the same characteristics with respect to vaapi/vdpau
as the computer where the AppImage was created.

Does MatN or anyone else's experience differ from this?
I did open BT #604 in case there is some way to make hardware acceleration
more accessible.
Glitterball3 uses a workaround (see forum) to create links to different
libraries to get this to work, but varies so much.

***************************************  Some experimental results
******************************
For example using Test1 (hockey.ts television recording) and Test2 (Life
Untouched 4K HDR10 Demo.mp4 downloadable file):

CinGG-20220131-x86_64.AppImage
-on *AMD laptop *with Radeon RX-580 graphics card where AppImage was
created (Fedora 32):
  Test1 hardware acceleration vaapi and vdpau both work as expected.
  Test2 hardware acceleration vaapi works, but vdpau does not - this is as
expected.

CinGG-20220131-x86_64-older_distros.AppImage
- on AMD laptop with Radeon RX-580 using AppImage created on AMD Opteron
Ubuntu 16.04:
  Test1 and Test2 hardware acceleration do not work due to missing Radeon
so file.

CinGG-20220131-x86-64-older_distros-multibit.AppImage
- on AMD laptop with Radeon RX-580 using AppImage created on Intel 4-core
with Broadwell graphics:
  Test1 hardware acceleration only vdpau works and that could be due to a
"wrapper".
  Test2 hardware acceleration does not work.

CinGG-20220131-x86_64.AppImage (same results as if built on this
computer/this O/S)
- on *Intel 4-core laptop* with Broadwell using AppImage created on AMD
laptop with different O/S of Fedora 32:
  Test1 hardware acceleration only vaapi works, but vdpau does not.
  Test2 hardware acceleration does not work..

CinGG-20220131-x86_64-older_distros.AppImage
- on Intel 4-core laptop with Broadwell using AppImage created on AMD
Opteron Ubuntu 16.04:
  Test1 and Test2 hardware acceleration do not work.

CinGG-20220131-x86-64-older_distros-multibit.AppImage
- on Intel 4-core laptop with Broadwell using AppImage created on same
computer but older O/S of Fedora 29:
  Test1 and Test2 hardware acceleration do not work.
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