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I have used and installed AviSynth+ 64-bit on a machine. I then wanted to install AviSynth+ 32-bit to use the watermark filter. I followed these instructions to install 32-bit, changed the registry keys, and got a blue screen of death.

After a fresh reinstallation of the Windows system, I want to install 32-bit AviSynth+ only and avoid another blue screen of death.

On the new version 3.5.1 of AviSynth+, is XP the 32-bit version, or is any installer able to install a 32-bit version?

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There is no problem with having installed both 32- and 64-bit version of AviSynth on your 64-bit machine, if you correctly placed 32-bit plugins vs. 64-bit ones to their appropriate places.

AviSynth is a frame server, it means, you never call it directly - other program call it back. It means that for example

  • 64-bit Media Player Classic will call the 64-bit version of AviSynth,
  • 32-bit Media Player Classic will call the 32-bit version of AviSynth.

Similarly

  • 64-bit FFmpeg will call the 64-bit version of AviSynth,
  • 32-bit FFmpeg will call the 32-bit version of AviSynth.

I guess that your problem lies in your FFmpeg installation — you have probably 64-bit, and it means that in the process of converting your .avs script to some media file the FFmpeg calls 64-bit version of AviSynth, and you need the 32-bit (because of your 32-bit filter).

So my advice is, install both 32- and 64-bit versions of FFmpeg (into different directories) and use the appropriate one for every particular case.

| improve this answer | |
  • I do not see a folder C:\Program Files (x86)\AviSynthor C:\Program Files\AviSynth. Where is AviSynth installed, so I can copy plugins there? And I do not see a 32-bit version of Media Player Classic at the K-Lite codec pack mega, where can I get the 32-bit version of Media Player Classic? – miguelmorin May 17 at 20:48
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    "Where is AviSynth installed?" See the Registry, key HKEY_LOCAL_MACHINE\SOFTWARE\Avisynth for 64-bit, HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Avisynth for 32-bit. – MarianD May 17 at 23:02
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    K-Lite codec pack installs both 32- and 64-bit version of Media Player Classic, c:\Program Files (x86)\K-Lite Codec Pack\MPC-HC\mpc-hc.exe is 32-bit, c:\Program Files (x86)\K-Lite Codec Pack\MPC-HC64\mpc-hc64.exe is 64-bit. – MarianD May 17 at 23:06
  • I found the location of installation by launching the Registry Editor app and going to those paths: AviSynth+ 64-bit is at C:\Program Files (x86)\AviSynth+`, AviSynth+ 32-bit shows the path where I extracted the universal installer, say C:\Users\<user>\Downloads\UniversalAvisynthInstaller\AVSPLUS_x86. K-Lite only installed the 64-bit version and C:\Program Files (x86)\K_Lite Codec Pack` has no MPC-HC directory. – miguelmorin May 19 at 16:55
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    Please try find mpc-hc.exe and mpc-hc-64.exe by other way — IMHO the best way is to install and use Everything — it's for free and very useful. – MarianD May 19 at 18:23

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