How Can I Troubleshoot Video and Audio Playback Issues with Unity's New VideoPlayer API?

Unity's New VideoPlayer API: Troubleshooting Video and Audio Playback

Unity's VideoPlayer and VideoClip APIs provide a robust solution for video playback across desktop and mobile platforms, superseding the outdated MovieTexture API. This guide addresses common issues encountered when using these APIs.

Resolving Audio Playback Problems

Audio playback failures often stem from incorrect execution order. Ensure the following code executes before videoPlayer.Prepare() is called:

<code class="language-csharp">videoPlayer.audioOutputMode = VideoAudioOutputMode.AudioSource;
videoPlayer.EnableAudioTrack(0, true);
videoPlayer.SetTargetAudioSource(0, audioSource);</code>

Addressing Prolonged "Preparing Video" States

Extended "Preparing Video" messages can be mitigated with these strategies:

1. Delayed Preparation: Introduce a short delay (e.g., 5 seconds) before checking video preparation status.
2. Temporary PlayOnAwake Enablement: Temporarily set videoPlayer.playOnAwake and audioSource.playOnAwake to true for debugging purposes.

Playing Videos from URLs and StreamingAssets

To play videos from a web address:

<code class="language-csharp">videoPlayer.source = VideoSource.Url;
videoPlayer.url = "http://www.example.com/video.mp4";</code>

For videos located in the StreamingAssets folder:

<code class="language-csharp">string url = "file://" + Application.streamingAssetsPath + "/" + "VideoName.mp4";

#if !UNITY_EDITOR && UNITY_ANDROID
    url = Application.streamingAssetsPath + "/" + "VideoName.mp4";
#endif

videoPlayer.source = VideoSource.Url;
videoPlayer.url = url;</code>

Supported Video File Formats

The VideoPlayer API supports a range of video formats:

Cross-Platform Compatibility:

• ogv
• vp8
• webm
• mov
• dv
• mp4
• m4v
• mpg
• mpeg

Windows-Specific Support:

• avi
• asf
• wmf

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