AmityVideoPlayer crashes with null check error when playing livestream

Flutter
1

AmityVideoPlayer Crashes When Playing Live Stream

Setup

  • amity_sdk: ^7.6.0
  • amity_video_player: ^0.0.3
  • Flutter on iOS/Android
  • Stream ID: 985afaf858b1aed32986f2d52f7e4376

What We’re Doing

We’re streaming via OBS using the stream URL and key from Amity Portal. The stream shows as LIVE in the portal and we can see it broadcasting there.

In our Flutter app, we’re trying to display this livestream in the feed using AmityVideoPlayer:

class _PostContentLivestreamState extends State<PostContentLivestream> {
  AmityVideoContoller? _controller;

  @override
  void initState() {
    super.initState();
    _controller = AmityVideoContoller(streamId: widget.post.streamId!);
  }

  @override
  void dispose() {
    _controller?.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AmityVideoPlayer(controller: _controller!);
  }
}

The Errors

When the widget loads, we get these crashes:

Error 1: Null Check Exception

Unhandled Exception: Null check operator used on a null value
#0  StreamFunction.getStreamData (package:amity_sdk/src/functions/stream_function.dart:15:33)
#1  _AmityVideoPlayerState.initState (package:amity_video_player/core/presentation/amity_video_player.dart:53:39)

Console shows:

flutter: LIVE ----> false
flutter: STREAM DATA ----> Instance of 'PartialStreamData'
flutter: Error: Bad state: No element

Error 2: Disposal Crash

LateInitializationError: Field '_videoPlayerController' has not been initialized.
#0  _AmityVideoPlayerState._videoPlayerController
#1  _AmityVideoPlayerState.dispose (package:amity_video_player/core/presentation/amity_video_player.dart:223:5)

Error 3: VLC Player Fails

LateInitializationError: Field '_viewId' has not been initialized.
#0  VlcPlayerController._viewId
#1  VlcPlayerController.dispose (package:flutter_vlc_player/src/vlc_player_controller.dart:355:37)

PlatformException(channel-error, Unable to establish connection on channel., null, null)

These errors repeat in a loop, making the app unstable.

What We’ve Tried

  • :white_check_mark: Verified stream is live and broadcasting in Amity Portal (using OBS)
  • :white_check_mark: Confirmed streamId is valid and being passed correctly
  • :white_check_mark: Checked network connectivity
  • :warning: Still crashes every time

How Do We Fix This?

The stream is definitely live and working in the portal. What’s the correct way to implement AmityVideoPlayer for livestreams? Are there any specific configurations or initializations we’re missing?