IntroductionHow to add CSS or JavaScript files to an Android/iOS projectHow to combat autoplay policiesPlayback issue with Internet Explorer 11Why does fullscreen not behave as expected on iOSWhy does the network API not work on iOS devicesWhy doesn't Chromecast work when embedded in an iframe on iOSWhy can't I select another video quality on iOSIs YouTube supportedWhy does the player load only one audio track (even though there are several in the manifest)Is it possible to see 360 degrees photo with THEOplayerWhy the visibility API does not work through an iframe on Safari and IE11What is an impressionHow to do error handlingHow to know whether a live stream is playingWhich error related events does the player exposeWhy did my subtitles stop workingHow does Media Engagement Index (MEI) affect Autoplay on ChromeWhat does the error message 'Unknown CDM error' meanWhat does the error message 'Something went wrong with Native playback' meanWhy are not all response headers exposedWhy does the currentTime seem off in my livestream & what can I do about itHow to remove CORS restrictions from a reproduction streamWhich network calls (or requests) does THEOplayer doWhy does the playback not work when using the Chrome iPhone/iPad simulatorWhat does the error message 'can only be initiated by a user gesture' imply? Can I still force the desired actionHow to remove unwanted CC track in iOS or SafariKnown Chromecast Limitations in 2.61.1What are the Product Flavor options in the Android SDK (minApi16 and minApi21)Why do I get a grey play button in my Android WebView and how to remove it?I'm unable to inspect Webview with the Android SDKMediaTek limitationsHow to fix Android DRM in Chrome 74How to use ProGuard with THEOplayer Android SDKSelf-hosting and versioning of THEOplayerDoes THEOplayer support EXT-X-DATERANGECan clipping be used on a playlistCan timeline thumbnails be made available before playback startWhat are the benefits of preloadingWhat are are the player seeking and seeked events and when are they firedCan we use HLS adsHow to change text in THEOplayerChange text when AirplayingITP2.1 problems using THEOplayerRemoving context menu/'Powered by THEOplayer v2...'What aspects of THEOplayer do we need to take into account to deploy a proper Content Security Policy (CSP)How can we avoid that the player keeps looking for chunks/segments if they are not foundCan we show a custom message on 403 on mp4Can we prevent UpNext feature from redirectingIs it possible to preload VOD content while the pre-roll is playingWhy is my video not playing automaticallyIs it possible to have multiple player instances play at the same timeIs it a problem if the viewer pauses a live stream for longer than the DVR windowTHEOplayer Features/ModulesChromecast on my webplayer does not work any longer despite no change in my implementationHow to track network errorsWhat is the support for WowzaHow to use the CDN fallback/backup stream featureHow to apply accurate buffering strategyHow can I distribute 4K content?What is the collaboration between Azure Media Services and THEOplayer

How to do error handling

Error handling comes in different sizes and shapes due to different needs:

  • The developer wants to render human-friendly error messages inside of the video player. Reading this error message,
  • the user can either remediate the issue by themselves (e.g. by refreshing the page, by checking again in some time, ...),
  • or contact a support service with this error code.
  • The developer wants to send error-data to an analytics service. This service helps identify frequent issues.
  • The developer wants to self-remediate the issue. For example, if a stream is unavailable, they want to retry to load the stream, or load a different stream.

THEOplayer exposes multiple events related to errors. Some events are exposed on platform X, but not on platform Y. The article at Which error related events does the player expose? overviews the error related events. Developers can subscribe to events and attach a callback function. The error handling is implemented inside of the callback function.

player.addEventListener('error', function(errorEvent) {
theoPlayerView.getPlayer().addEventListener(PlayerEventTypes.ERROR, new EventListener<ErrorEvent>() {
                public void handleEvent(ErrorEvent errorEvent) {
let listener = self.theoplayer?.addEventListener(type: PlayerEventTypes.ERROR, listener: { error in print(error.error)})

During error handling, we encourage developers to process the data inside of the callback event. The data in this event can be stringified, which can then be stored as a log, and be sent to the support service or an analytics service. Additionally, you could decide to render your own error messages inside of the video player. The article at http://demo.theoplayer.com/using-custom-error-messages illustrates this for the Web SDK.

THEOplayer does not expose a strict set of error codes at this time.

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