The majority of Windows installs since Vista are 64-bit, because of that, these guides are formatted with instructions for the 64-bit versions of Windows. If the folder "Program Files (x86)" does not exist Windows is 32-bit and the install directory will be in "Program Files".
NOTE: If you wish to simplify the installation process then try out AMVpack, an all-in-one installer package including these tools and a few more!
Download AviSynth+.
Run AviSynthPlus_MT.exe
NOTE: The file name will vary based on the version you download.
Select your preferred language and click "OK".
On the Welcome Screen click "Next" to continue.
On the License Agreement Screen you will need to click "I accept the agreement" then "Next" to continue.
The Install Location Destination Folder will be "C:\Program Files (x86)\AviSynth+", click "Next" to continue.
On the Select Components Screen click "Next" to continue.
On the Ready to Install Screen click install.
When the install is completed click "Finish".
Download Bifrost, D2VSource, DAA, DGDecode, Dither, FFT3DFilter, Flashkyuu Deband, Hysteria, L-SMASH-Works, Mask Tools 2, MVTools 2, NNEDI3, TComb, and TIVTC.
NOTE: To save DAA, right click on the link and use the "Save link as..." option.
NOTE: To save Hysteria you will need to copy the code, paste it in notepad, then save it has Hysteria.avsi
NOTE: All 7z files will require 7zip to extract it.
Extract all of the files and copy the plugins into the following directories:
x86 Plugins: C:\Program Files (x86)\AviSynth+\plugins
x64 Plugins: C:\Program Files (x86)\AviSynth+\plugins64
NOTE: Do not put them in sub-folders within the plugins directory!
Download FFTW, Visual C++ Redistributable (x86), and Visual C++ Redistributable (x64).
Copy the 32-bit libfftw3f-3.dll to C:\Windows\SysWOW64 & the 64-bit version to C:\Windows\System32
NOTE: On 32-bit systems the 32-bit version will need to be placed in: C:\Windows\System32
Run vc_redist.x86.exe
In the “Microsoft Visual C++ Redistributable (x86)” installer check “I agree to the license terms and conditions” and click Install.
On the “Setup Successful” screen click Close.
Run vc_redist.x64.exe
In the “Microsoft Visual C++ Redistributable (x64)” installer check “I agree to the license terms and conditions” and click Install.
On the “Setup Successful” screen click Close.
Download AvsPmod.
Extract AvsPmod.Windows_x86-32.zip to the directory: C:\Program Files (x86)\AvsPmod
Extract AvsPmod.Windows_x86-64.zip to the directory: C:\Program Files\AvsPmod
NOTE: This is not needed on 32-bit systems.
Create a shortcut of both AvsPmod.exe versions and place them in the location of your choice.
Download DGMPGDec.
Extract dgmpgdec158.zip to the directory: C:\Program Files (x86)\dgmpgdec
Create a shortcut of DGIndex.exe and place it in the location of your choice.