AudioContext.decodeAudioData() error: Uncaught (in promise) DOMException: Unable to decode audio data

[lanly-dev]

Issue Type: Bug

Steps to Reproduce:

1. Run debug spectrogram from source
2. Open a directory that has an mp3 audio file
3. Select a valid mp3 -> webview shows up, and the error prompted Unable to decode audio data.
4. You could check out the error in the developer tool's console

The extension has never been working on official and insider build (same error), but somehow it worked in the exploration build in the past. The extension worked fine when I tried out the extension on this old exploration build: #94523 (comment). If I update the exploration vscode to 1.66, it doesn't work anymore and gives out the error.

I'm not sure if this error is intentional (maybe vscode or electron doesn't want to include the necessary codec to decode mp3 files) or a bug for the newer version? But AudioContext should work fine, at least in the past, see the issue #78333.

VS Code version: Code - Exploration 1.66.0-exploration (b056e68, 2022-03-10T09:18:09.603Z)
OS version: Windows_NT x64 10.0.19044
Restricted Mode: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8 x 2592)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_renderer: enabled_on video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.87GB (3.66GB free)
Process Argv	--crash-reporter-id 0f541a63-ae4f-4db5-913f-fc5df9332f75
Screen Reader	no
VM	40%

[mjbvz]

This is likely because the official builds do not include a full ffmpeg version (which I believe contributes support for mp3s)

[deepak1556]

Yes the current ffmpeg library shipped with insiders, stable and explorations does not support mp3 codec. We are currently looking to support it, you can follow #118275 for updates. Thanks!