Cannot create FMOD - error during batch synthesis

[nehvaleem]

Bug Report

Overview

I am creating synthesized voices in batch, and some of the results aren't properly imported by unity. I am getting the exception Error: Cannot create FMOD::Sound instance for clip "" (FMOD error: Error loading file. ) (stacktrace is attached at the end). I am using the latest 3.2.9 version.

The issue is that for example, VLC is able to play the file. And I can reconvert it using some other 3rd party tool, but it doesn't make too much sense in the batch processing context.

Additional context

Error: Cannot create FMOD::Sound instance for clip "" (FMOD error: Error loading file. )
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Utilities.WebRequestRest.Rest/<DownloadAudioClipAsync>d__43:MoveNext () (at ./Library/PackageCache/com.utilities.rest@2.5.3/Runtime/Rest.cs:680)
System.Runtime.CompilerServices.AsyncMethodBuilderCore/MoveNextRunner:Run ()
Utilities.Async.AwaiterExtensions:RunOnUnityScheduler (System.Action) (at ./Library/PackageCache/com.utilities.async@2.1.3/Runtime/Async/AwaiterExtensions.cs:248)
Utilities.Async.SimpleCoroutineAwaiter:Complete (System.Exception) (at ./Library/PackageCache/com.utilities.async@2.1.3/Runtime/Async/SimpleCoroutineAwaiter.cs:47)
Utilities.Async.AwaiterExtensions/<ReturnVoid>d__27:MoveNext () (at ./Library/PackageCache/com.utilities.async@2.1.3/Runtime/Async/AwaiterExtensions.cs:334)
Unity.EditorCoroutines.Editor.EditorCoroutine:ProcessIEnumeratorRecursive (System.Collections.IEnumerator) (at ./Library/PackageCache/com.unity.editorcoroutines@1.0.0/Editor/EditorCoroutine.cs:148)
Unity.EditorCoroutines.Editor.EditorCoroutine:MoveNext () (at ./Library/PackageCache/com.unity.editorcoroutines@1.0.0/Editor/EditorCoroutine.cs:115)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions ()

[StephenHodgson]

How did you create this file?

Were you streaming or using the normal endpoint?

[nehvaleem]

How did you create this file?

Were you streaming or using the normal endpoint?

Using TextToSpeechEndpoint. I am creating 50-100 files in batch and around 5% of them aren't importing correctly to unity :(

[StephenHodgson]

What format are they generated for?

[StephenHodgson]

FWIW I also use batch processing and have not ran into this. It'd be helpful if you shared your implementation.