More than one video at a time

[jankais3r]

Hi Oleksii,

Many thanks for this sample project and your great tutorial. Having no prior Android development experience, I was wondering how difficult would it be to support more than one image-video pair at a time. So far I commented out the code block that paused the video when it stopped being fully tracked, but that did not cut it.

I guess I'll have to modify this part as well, to include more than just one tracking image?

fullTrackingImages.firstOrNull()?.let { augmentedImage ->
    try {
        playbackArVideo(augmentedImage)
    } catch (e: Exception) {
        Log.e(TAG, "Could not play video [${augmentedImage.name}]", e)
    }
}

I'll comment here for future reference if I figure this out on my own. Thanks again!

[shliama]

Hey, thanks :) Glad this tutorial is still relevant.

For what you want to achieve it'll take much more changes to the ArVideoFragment.
First of all, take a look at the createArScene method - it creates and ExternalTexture and binds it to both MediaPlayer and videoRenderable (which is later assigned to a VideoAnchorNode). If you want to have multiple video Nodes playing different videos at the same time, you'd need to run createArScene method logic (create all that stuff) for every augmentedImage you want to play video on top.

Guess you'll want to extract that logic into a separate class (that will have own MediaPlayer and all other things created inside createArScene method) and have some sort of key-value Map where key is augmentedImage and value is all that "video playback texture" stuff.

Since you'll have multiple MediaPlayers at the same time, the sound may overlap, guess it won't be an issue if your videos are silent. You'll also have to properly dismiss resources when you no longer want to play a video for no-longer tracked augmented images.

[shliama]

Since my tutorial is quite outdated, I recommend you taking a look at this repository https://github.com/ThomasGorisse/sceneform-android-sdk

There is my example modified to run with the latest ARCore SDK and Filament instead of Sceneform (which is obsolete now).