Android: Vuforia video black screen

[ianrothmann]

Hi there,

We have a Vuforia marker with a video that plays when the marker is scanned. The video is included in the Unity project. The video just appears black on Android devices and eventually crashes the unity part of the app. We've got other markers that display 3D assets too and they work perfectly fine on Android.

If we only run the Unity project separately the video works on Android, so this only happens when the project is integrated.

Everything is fine on iOS.

We've tried removing the multi-threaded rendering and transcoding the videos (and the override for android option). We also tried vp8 and h.264 codecs (specified in Unity).

We've been battling with this for 2 solid days and I'm out of ideas.

Do you perhaps have a clue of what could be the problem?

Kind regards,

Ian

[yasirkula]

In our project, we have also used VideoPlayer to play a video on a marker. We were using asset bundles but we had to do a workaround because VideoPlayer didn't support playing VideoClip's from asset bundles back then. What we did was changing the extension of the video asset to ".bytes" and referencing it from our script with a TextAsset variable. Then, when the scene starts, we temporarily save the video to the local file system:

string path = Path.Combine( Application.temporaryCachePath, "temp.mp4" );
File.WriteAllBytes( path, videoClipTextAsset.bytes );

Afterwards, we tell the video player to play the video at that path:

videoPlayer.url = path;
videoPlayer.source = VideoSource.Url;

In conclusion, we played videos from url rather than from VideoClip assets.

[yasirkula]

I can't remember whether it was videoPlayer.url = path; or videoPlayer.url = "file://" + path; though.

[ianrothmann]

Thank you very much, we'll try this today. I will post whether it solves the problem.

[ianrothmann]

It works like a charm! :) Thank you very much!

[RyuuYuki]

I solved this problem.
Put in the video folder in StreamingAssets/Ionic.mp4
After export, the video will be in the folder assets/Ionic.mp4
You can specify the path for the android with the following code:

videoPlayer.url = "jar:file://" + Application.dataPath + "!/assets/Ionic.mp4" ;

[erickcouto]

I'm still getting this error. My app just crash when the video start. Can you help me?

[yasirkula]

Are there any error messages in logcat/Xcode console?