Valhalla Supermassive - does not accept audio input?

[pl4sma2389]

Hello,
I've been working on a little proof-of-concept, and one of the plugins I would like to use in it is an external .vst3 plugin called Supermassive, by Valhalla: https://valhalladsp.com/shop/reverb/valhalla-supermassive/

However, when I try to load it using
plg_supermassive = load_plugin("./VST3s/ValhallaSupermassive.vst3"), Python spits out ValueError: Plugin 'ValhallaSupermassive' does not accept audio input. It may be an instrument plug-in and not an audio effect processor.

This plugin is most definitely an effects plugin and not a synth plugin. In addition, I have some other external plugins already working fine in my project.

This is the only plugin that I want to have in my proof-of-concept that doesn't work-- but without it, the outputted audio just doesn't sound as realistic. I've tried using Pedalboard's built-in reverb, as well as some other reverbs that do work, but I can't get them dialed in as well as I have Supermassive dialed in inside my DAW.

Any help or pointers would be appreciated... Am I missing something?

[psobot]

Hi @pl4sma2389!

Which platform are you running this code on? I'm unable to reproduce this issue with Valhalla Supermassive 2.0.0 on macOS (Intel, x86) with either the Audio Unit or VST3 versions of the plugin:

The error message you've listed there could be thrown in one of two places: when checking the number of input channels reported by the plugin instance, or when trying to acquire the plugin's main input bus. If either operation fails, that message will be thrown. (I'll change the error messages there to be a bit more descriptive, but because I can't reproduce the issue locally, it might be tricky to track this bug down.)

[pl4sma2389]

@psobot I'm running it on Windows 11 22000.795 64bit, and I'm running the VST3 version.
Here's the actual error:

Traceback (most recent call last):
  File "S:\Assorted Project Files\{PROJECT}\main.py", line 12, in <module>
    plg_supermassive = load_plugin("./VST3s/ValhallaSupermassive.vst3")
  File "C:\Users\{USERNAME}\AppData\Local\Programs\Python\Python310\lib\site-packages\pedalboard\pedalboard.py", line 638, in load_plugin
    return plugin_class(
  File "C:\Users\{USERNAME}\AppData\Local\Programs\Python\Python310\lib\site-packages\pedalboard\pedalboard.py", line 589, in __init__
    _VST3Plugin.__init__(self, path_to_plugin_file, plugin_name)
ValueError: Plugin 'ValhallaSupermassive' does not accept audio input. It may be an instrument plug-in and not an audio effect processor.

[ravicodelabs]

Hi - to provide another data point: on macOs Intel Core i5, the vst3 plugin for Valhalla Supermassive 2.0.0 loads fine with the following code:

from pedalboard import load_plugin

plugin_supermassive = load_plugin("/Library/Audio/Plug-Ins/VST3/ValhallaSupermassive.vst3")

[psobot]

Thanks again for the bug report @pl4sma2389 - this has been fixed as of v0.5.7, which should now be available for download via pip/PyPI.