Description
Tracks fail to play in the Monochrome iOS app, while the same tracks work on monochrome.tf in Safari on the same device.
The app loads the track metadata, creates the audio context, and resolves an Amazon Music DASH/CENC stream. Playback then fails with Source not supported.
The logs also show that the Amazon service-worker decrypter is disabled for the native app shell, which may cause encrypted streams to behave differently inside the Capacitor WKWebView.
Reproduction steps
1. Open the Monochrome iOS app.
2. Sign in.
3. Play a track that resolves to an Amazon Music DASH/CENC source.
4. Observe that playback fails.
5. Open the same track on monochrome.tf in Safari.
6. Observe that it plays normally.
Expected Behavior
Tracks should play in the iOS app the same way they do in Safari.
Screenshots
No response
Logs (Desktop only)
This is the iOS logs.
[Amazon SW Decrypter] PWA disabled for native app shell
[AudioContext] Created: 48000Hz
[Amazon SW Decrypter] stream decision {"needsProxyDecryption":true,"shouldProxyAmazon":true,"hasDecryptionKey":true,"hasKeyId":true,"playbackType":"dash-cenc","urlHost":"d17vo8z6jop21h.cloudfront.net"}
Routing Amazon Music CENC stream through SW Decrypter
[AudioContext] Current state: running
Could not play track: One Dance {}
Media playback error (audio-player): Source not supported {"isTrusted":true}Browser
Monochrome iOS app using Capacitor WKWebView. Safari works correctly.
Device
iPhone 17 Pro Max simulator running iOS 26.5.
Description
Tracks fail to play in the Monochrome iOS app, while the same tracks work on monochrome.tf in Safari on the same device.
The app loads the track metadata, creates the audio context, and resolves an Amazon Music DASH/CENC stream. Playback then fails with
Source not supported.The logs also show that the Amazon service-worker decrypter is disabled for the native app shell, which may cause encrypted streams to behave differently inside the Capacitor WKWebView.
Reproduction steps
1. Open the Monochrome iOS app. 2. Sign in. 3. Play a track that resolves to an Amazon Music DASH/CENC source. 4. Observe that playback fails. 5. Open the same track on monochrome.tf in Safari. 6. Observe that it plays normally.Expected Behavior
Tracks should play in the iOS app the same way they do in Safari.
Screenshots
No response
Logs (Desktop only)
Browser
Monochrome iOS app using Capacitor WKWebView. Safari works correctly.
Device
iPhone 17 Pro Max simulator running iOS 26.5.