[bug] Cannot screen share a window in Flutter web app #463
Description
Describe the bug
When running in Flutter web, attempt to share a window fails with error Could not start video source
Sharing a tab (in Chrome) and sharing the whole screen work as expected.
App Code
participant.setScreenShareEnabled(
true,
captureScreenAudio: true,
);Call Stack
local.dart:478
setSourceEnabled()
local.dart:530
final tracks = await LocalVideoTrack.createScreenShareTracksWithAudio(captureOptions);
video.dart:211
final stream = await LocalTrack.createStream(options);
local.dart:173
stream = await rtc.navigator.mediaDevices.getDisplayMedia(constraints);jsutil function that errors
mediadevices_impl.dart:47
getDisplayMedia()
@ line 55
final jsStream = await jsutil.promiseToFuture<html.MediaStream>(jsutil.callMethod(mediaDevices, 'getDisplayMedia', [arg]));Exception:
DomException (NotReadableError: Could not start video source)
Flutter console log:
SEVERE: TLKController: _activateScreenShareWeb(): Web could not publish video: Unable to getDisplayMedia: NotReadableError: Could not start video source
To Reproduce
- Run app on web (I'm using Chrome)
- Commence screen share with call to Participant.setScreenShareEnabled()
- Select 'window' tab and select a window then hit 'share'
- Observe error in console.
Expected behavior
Expect the screen share to commence as it does for a shared tab or whole-screen share.
Platform information
Flutter Version
[✓] Flutter (Channel beta, 3.18.0-0.2.pre, on macOS 14.0 23A344 darwin-arm64, locale en-NL) • Flutter version 3.18.0-0.2.pre on channel beta at /Users/tpf-pricemoov/fvm/versions/3.18.0-0.2.pre • Upstream repository https://github.com/flutter/flutter.git • Framework revision fed06b31d9 (7 weeks ago), 2023-12-13 14:53:33 -0800 • Engine revision 39c6dc9bdd • Dart version 3.3.0 (build 3.3.0-174.3.beta) • DevTools version 2.30.0[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
• Android SDK at /Users/tpf-pricemoov/Library/Android/sdk
• Platform android-34, build-tools 34.0.0
• ANDROID_HOME = /Users/tpf-pricemoov/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.7+0-17.0.7b1000.6-10550314)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 15.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 15C500b
• CocoaPods version 1.14.3
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2023.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 17.0.7+0-17.0.7b1000.6-10550314)
[✓] VS Code (version 1.86.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.82.0
[✓] Connected device (2 available)
• macOS (desktop) • macos • darwin-arm64 • macOS 14.0 23A344 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 121.0.6167.139
[✓] Network resources
• All expected network resources are available.
• No issues found!
- Plugin version: 1.5.6
- Flutter target OS: Web/Chrome (simulator & prod)
- Flutter target OS version: N/A