Video capture fails on iOS 18.1.1 with error "The camera's active format is unsupported by this session"

[shepeliev]

Attempting to start video capture using the camera on iOS 18.1.1 fails with the error: The camera's active format is unsupported by this session.

This issue occurs in the 125.6422.05 and 125.6422.06 releases.
However, the 125.6422.04 release works as expected.

Environment

iPhone 13 Pro Max
iOS 18.1.1
iOS WebRTC SDK: 125.6422.06

Logs

(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:206 -[RTCCameraVideoCapturer startCaptureWithDevice:format:fps:completionHandler:]_block_invoke): startCaptureWithDevice <AVCaptureDeviceFormat: 0x3021ec340 'vide'/'420v' 1280x 720, { 1-120 fps}, photo dims:{1280x720}, fov:73.292, binned, supports vis (max strength:Low), max zoom:64.50 (upscales @1.43), ISO:23.0-920.0, SS:0.000022-1.000000, system exposure bias range:-2.0-2.0, supports Portrait Effect, supports Studio Lighting, supports Reactions> @ 30 fps
(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:399 -[RTCCameraVideoCapturer handleCaptureSessionRuntimeError:]): Capture session runtime error: Error Domain=AVFoundationErrorDomain Code=-11873 "Cannot Record" UserInfo={NSLocalizedDescription=Cannot Record, AVErrorDeviceKey=<AVCaptureFigVideoDevice: 0x10a1fb000 [Front Camera][com.apple.avfoundation.avcapturedevice.built-in_video:1]>, NSLocalizedRecoverySuggestion=Reset the camera to a supported active format, then restart the session., NSLocalizedFailureReason=The camera's active format is unsupported by this session.}
(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:435 -[RTCCameraVideoCapturer handleFatalError]_block_invoke): Attempting to recover from fatal capture error.
(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:447 -[RTCCameraVideoCapturer handleNonFatalError]_block_invoke): Restarting capture session after error.
(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:399 -[RTCCameraVideoCapturer handleCaptureSessionRuntimeError:]): Capture session runtime error: Error Domain=AVFoundationErrorDomain Code=-11873 "Cannot Record" UserInfo={NSLocalizedDescription=Cannot Record, AVErrorDeviceKey=<AVCaptureFigVideoDevice: 0x10a1fb000 [Front Camera][com.apple.avfoundation.avcapturedevice.built-in_video:1]>, NSLocalizedRecoverySuggestion=Reset the camera to a supported active format, then restart the session., NSLocalizedFailureReason=The camera's active format is unsupported by this session.}
(RTCLogging.mm:33): (RTCCameraVideoCapturer.m:439 -[RTCCameraVideoCapturer handleFatalError]_block_invoke): Previous fatal error recovery failed.

[cloudwebrtc]

I think you need to filter out the parts that the device does not support when enumerating the formats like this:
https://github.com/flutter-webrtc/flutter-webrtc/blob/main/common/darwin/Classes/FlutterRTCMediaStream.m#L938-L942

[shepeliev]

@cloudwebrtc thanks. It works.