CameraX: setTargetResolution() does not work on some devices

Issue

The code below (which works fine on my old Samsung S4) does not work on my Samsung A7 :

val imageAnalysis = ImageAnalysis.Builder()
    .setTargetResolution(Size(176, 144))
    .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
    .build()

imageAnalysis.setAnalyzer(cameraExecutor, { image ->
    Log.i("LOG", "${image.width}x${image.height}")
    image.close()
})

val cameraProvider = cameraProviderList.get()
cameraProvider.unbindAll()
cameraProvider.bindToLifecycle(mainActivity, CameraSelector.DEFAULT_BACK_CAMERA, imageAnalysis)

Indeed, instead of returning a resolution of 176x144, it returns a resolution of 720x720

The resolution 176x144 is however one of the resolutions supported by this device (got from the StreamConfigurationMap.getOutputSizes() method) :

3264x2448
3264x1836
2160x2160
1920x1440
1920x1080
1440x1440
1440x1080
1280x720
1088x1088
1056x704
1024x768
960x720
800x450
720x720
720x480
640x480
480x320
352x288
320x240
256x144
**176x144**

If I don't set a target resolution, the returned resolution is 640x480 (which is in accordance with the documentation).

Do you see anything that would explain this problem?

Solution

Replacing

.setTargetResolution(Size(176, 144))

with

.setTargetResolution(Size(144, 176))

fixed the problem.

Answered By - Denis