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PTCInc / vuforia-engine

Bug and feedback issue tracker for the Vuforia Engine SDK
https://developer.vuforia.com
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Ground Plane camera feed lags in Android #140

Open thechargedneutron opened 4 days ago

thechargedneutron commented 4 days ago

Summarize the bug:

I made a basic ground plane app and deployed it to an iPhone and an Android phone. The iPhone quality is very good whereas I see a lag in the android camera feed on the app. Is there a solution to this?

Here are my device details

  1. iPhone 13 Pro (works very well)
  2. Samsung galaxy M33 5G running android 14

Here is the recorded video from two devices:

  1. iPhone - very stable response to camera motion - https://drive.google.com/file/d/13vZHYf6WuV3uO6VyMN_dKMxuuuzaa-tc/view?usp=sharing
  2. Android - the camera feed lags the camera motion - https://drive.google.com/file/d/1GEaQhWreuC_wKgJd4Ndwn-VpaXCcXkFt/view?usp=sharing

I feel this lag can cause eye fatigue with even minimal usage. Let me know if any more details are required.

Related bug report: https://forum.unity.com/threads/recurring-limitation-camera-feed-lag-in-android.517229/

If there are any settings or options that I can enable to improve the camera feed, that will be appreciated.

ptc-thesbyro commented 4 days ago

Hi,

Could you try to set the camera mode to optimize for speed: See the unity guide or native guide on setting the camera mode.

That should minimize the impact Vuforia Engine has on the device. Note that the iOS devices runs on 60 fps, while Android devices run on 30 fps. source, which may be a factor in the experienced differences.

Hope it helps,

thechargedneutron commented 4 days ago

Hi @ptc-thesbyro, setting the optimization for speed does improve the lag. There is still a slight lag between the mobile movement and the feed movement. Are there other optimizations that can be done? If not, I guess it's the limitation of the ARCore and android phones, in general.

ptc-epassaro commented 4 days ago

@thechargedneutron would it be possible for you to share with us the steps you used to set up your project? Also, which versions of Unity and Vuforia are you using? And are you also importing the ARCore XR Plugin or the ARFoundation packages in your project?

thechargedneutron commented 4 days ago

Hi @ptc-epassaro,

Unity version: 2022.3.20f1 Vuforia version: 10.21.3

I just imported the Vuforia package into the project and then developed the app. I did not import either ARCore XR Plugin or the ARFoundation packages separately -- not sure if that is loaded by default when importing Vuforia. I just have a ground plane in the scene along with a few 3D models that I want to show on top.

Let me know if any more details are required.