wip: add vui timing injection, receive the requested fps from camera in rn layer, normalize timestamp

Implements HLS-compatible fragmented MP4 recording on Android using
AndroidX Media3 FragmentedMp4Muxer, matching the iOS implementation.

Changes:
- Add FragmentedRecordingManager for fMP4 segment output
- Add ChunkedRecorderInterface to abstract recorder implementations
- Add onInitSegmentReady callback for init segment (init.mp4)
- Update onVideoChunkReady to include segment duration
- RecordingSession now uses FragmentedRecordingManager by default

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package/android/CMakeLists.txt

@@ -19,9 +19,7 @@ endif()
 
 
 # Add react-native-vision-camera sources
-add_library(
+set(SOURCES
-        ${PACKAGE_NAME}
-        SHARED
         # Shared C++
         ../cpp/MutableRawBuffer.cpp
         # Java JNI
@@ -31,7 +29,11 @@ add_library(
         src/main/cpp/OpenGLContext.cpp
         src/main/cpp/OpenGLRenderer.cpp
         src/main/cpp/MutableJByteBuffer.cpp
-        # Frame Processor
+)
+
+# Only add Frame Processor sources if enabled
+if (ENABLE_FRAME_PROCESSORS)
+        list(APPEND SOURCES
                 src/main/cpp/frameprocessor/FrameHostObject.cpp
                 src/main/cpp/frameprocessor/FrameProcessorPluginHostObject.cpp
                 src/main/cpp/frameprocessor/JSIJNIConversion.cpp
@@ -43,6 +45,18 @@ add_library(
                 src/main/cpp/frameprocessor/java-bindings/JVisionCameraProxy.cpp
                 src/main/cpp/frameprocessor/java-bindings/JVisionCameraScheduler.cpp
         )
+endif()
+
+add_library(
+        ${PACKAGE_NAME}
+        SHARED
+        ${SOURCES}
+)
+
+# Force 16KB page alignment for Android 15+ compatibility
+set_target_properties(${PACKAGE_NAME} PROPERTIES
+    LINK_FLAGS "-Wl,-z,max-page-size=16384"
+)
 
 # Header Search Paths (includes)
 target_include_directories(
@@ -63,7 +77,7 @@ target_link_libraries(
         ${LOG_LIB}                      # <-- Logcat logger
         android                         # <-- Android JNI core
         ReactAndroid::jsi               # <-- RN: JSI
-        # ReactAndroid::reactnativejni      # <-- Temporarily disabled for RN 0.79+ compatibility
+        ReactAndroid::reactnative       # <-- RN: React Native JNI bindings (RN 0.76+)
         fbjni::fbjni                    # <-- fbjni
         GLESv2                          # <-- OpenGL (for VideoPipeline)
         EGL                             # <-- OpenGL (EGL) (for VideoPipeline)

package/android/build.gradle

@@ -133,8 +133,16 @@ android {
   }
 
   compileOptions {
-    sourceCompatibility JavaVersion.VERSION_1_8
+    sourceCompatibility JavaVersion.VERSION_17
-    targetCompatibility JavaVersion.VERSION_1_8
+    targetCompatibility JavaVersion.VERSION_17
+  }
+
+  kotlinOptions {
+    jvmTarget = "17"
+    freeCompilerArgs += [
+      "-opt-in=kotlin.RequiresOptIn",
+      "-opt-in=com.facebook.react.annotations.UnstableReactNativeAPI"
+    ]
   }
 
   externalNativeBuild {
@@ -157,6 +165,7 @@ android {
             "**/libhermes-executor-debug.so",
             "**/libhermes_executor.so",
             "**/libreactnativejni.so",
+            "**/libreactnative.so",
             "**/libturbomodulejsijni.so",
             "**/libreact_nativemodule_core.so",
             "**/libjscexecutor.so"

package/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

package/android/src/main/cpp/VisionCamera.cpp

@@ -9,11 +9,13 @@
 
 JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void*) {
   return facebook::jni::initialize(vm, [] {
+    // VideoPipeline is needed for video recording even without Frame Processors
+    vision::VideoPipeline::registerNatives();
+#if VISION_CAMERA_ENABLE_FRAME_PROCESSORS
+    // Frame Processor JNI bindings - only register when Frame Processors are enabled
     vision::VisionCameraInstaller::registerNatives();
     vision::JVisionCameraProxy::registerNatives();
     vision::JVisionCameraScheduler::registerNatives();
-    vision::VideoPipeline::registerNatives();
-#if VISION_CAMERA_ENABLE_FRAME_PROCESSORS
     vision::JFrameProcessor::registerNatives();
     vision::JSharedArray::registerNatives();
 #endif

package/android/src/main/java/com/mrousavy/camera/CameraView+Events.kt

@@ -40,15 +40,26 @@ fun CameraView.invokeOnStopped() {
   this.sendEvent(event)
 }
 
-fun CameraView.invokeOnChunkReady(filepath: File, index: Int) {
+fun CameraView.invokeOnChunkReady(filepath: File, index: Int, durationUs: Long?) {
-  Log.e(CameraView.TAG, "invokeOnError(...):")
+  Log.i(CameraView.TAG, "invokeOnChunkReady(...): index=$index, filepath=$filepath, durationUs=$durationUs")
   val event = Arguments.createMap()
   event.putInt("index", index)
   event.putString("filepath", filepath.toString())
+  if (durationUs != null) {
+    event.putDouble("duration", durationUs / 1_000_000.0) // Convert microseconds to seconds
+  }
   val reactContext = context as ReactContext
   reactContext.getJSModule(RCTEventEmitter::class.java).receiveEvent(id, "onVideoChunkReady", event)
 }
 
+fun CameraView.invokeOnInitReady(filepath: File) {
+  Log.i(CameraView.TAG, "invokeOnInitReady(...): filepath=$filepath")
+  val event = Arguments.createMap()
+  event.putString("filepath", filepath.toString())
+  val reactContext = context as ReactContext
+  reactContext.getJSModule(RCTEventEmitter::class.java).receiveEvent(id, "onInitReady", event)
+}
+
 fun CameraView.invokeOnError(error: Throwable) {
   Log.e(CameraView.TAG, "invokeOnError(...):")
   error.printStackTrace()

package/android/src/main/java/com/mrousavy/camera/CameraView.kt

@@ -271,8 +271,12 @@ class CameraView(context: Context) :
     invokeOnStopped()
   }
 
-  override fun onVideoChunkReady(filepath: File, index: Int) {
+  override fun onVideoChunkReady(filepath: File, index: Int, durationUs: Long?) {
-    invokeOnChunkReady(filepath, index)
+    invokeOnChunkReady(filepath, index, durationUs)
+  }
+
+  override fun onInitSegmentReady(filepath: File) {
+    invokeOnInitReady(filepath)
   }
 
   override fun onCodeScanned(codes: List<Barcode>, scannerFrame: CodeScannerFrame) {

package/android/src/main/java/com/mrousavy/camera/CameraViewManager.kt

@@ -32,7 +32,8 @@ class CameraViewManager : ViewGroupManager<CameraView>() {
       .put("cameraError", MapBuilder.of("registrationName", "onError"))
       .put("cameraCodeScanned", MapBuilder.of("registrationName", "onCodeScanned"))
       .put("onVideoChunkReady", MapBuilder.of("registrationName", "onVideoChunkReady"))
-      .build()
+      .put("onInitReady", MapBuilder.of("registrationName", "onInitReady"))
+      .build()?.toMutableMap()
 
   override fun getName(): String = TAG
 

package/android/src/main/java/com/mrousavy/camera/CameraViewModule.kt

@@ -31,10 +31,12 @@ class CameraViewModule(reactContext: ReactApplicationContext) : ReactContextBase
     init {
       try {
         // Load the native part of VisionCamera.
-        // Includes the OpenGL VideoPipeline, as well as Frame Processor JSI bindings
+        // Includes the OpenGL VideoPipeline (needed for video recording)
+        // Frame Processors remain disabled for RN 0.79+ compatibility
         System.loadLibrary("VisionCamera")
+        Log.i(TAG, "VisionCamera native library loaded successfully")
       } catch (e: UnsatisfiedLinkError) {
-        Log.e(VisionCameraProxy.TAG, "Failed to load VisionCamera C++ library!", e)
+        Log.e(TAG, "Failed to load VisionCamera C++ library!", e)
         throw e
       }
     }
@@ -73,14 +75,10 @@ class CameraViewModule(reactContext: ReactApplicationContext) : ReactContextBase
     }
 
   @ReactMethod(isBlockingSynchronousMethod = true)
-  fun installFrameProcessorBindings(): Boolean =
+  fun installFrameProcessorBindings(): Boolean {
-    try {
+    // Frame Processors are disabled for React Native 0.79+ compatibility
-      val proxy = VisionCameraProxy(reactApplicationContext)
+    Log.i(TAG, "Frame Processor bindings not installed - Frame Processors disabled for RN 0.79+ compatibility")
-      VisionCameraInstaller.install(proxy)
+    return false
-      true
-    } catch (e: Error) {
-      Log.e(TAG, "Failed to install Frame Processor JSI Bindings!", e)
-      false
   }
 
   @ReactMethod
@@ -157,7 +155,7 @@ class CameraViewModule(reactContext: ReactApplicationContext) : ReactContextBase
   }
 
   private fun canRequestPermission(permission: String): Boolean {
-    val activity = currentActivity as? PermissionAwareActivity
+    val activity = reactApplicationContext.currentActivity as? PermissionAwareActivity
     return activity?.shouldShowRequestPermissionRationale(permission) ?: false
   }
 

package/android/src/main/java/com/mrousavy/camera/core/CameraSession.kt

@@ -15,6 +15,7 @@ import android.util.Log
 import android.util.Size
 import android.view.Surface
 import android.view.SurfaceHolder
+import android.view.WindowManager
 import androidx.core.content.ContextCompat
 import com.google.mlkit.vision.barcode.common.Barcode
 import com.mrousavy.camera.core.capture.RepeatingCaptureRequest
@@ -425,6 +426,21 @@ class CameraSession(private val context: Context, private val cameraManager: Cam
 
       val fps = configuration?.fps ?: 30
 
+      // Get actual device rotation from WindowManager since the React Native orientation hook
+      // doesn't update when rotating between landscape-left and landscape-right on Android.
+      // Map device rotation to the correct orientationHint for video recording:
+      // - Counter-clockwise (ROTATION_90) → 90° hint
+      // - Clockwise (ROTATION_270) → 270° hint
+      val windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
+      val deviceRotation = windowManager.defaultDisplay.rotation
+      val recordingOrientation = when (deviceRotation) {
+        Surface.ROTATION_0 -> Orientation.PORTRAIT
+        Surface.ROTATION_90 -> Orientation.LANDSCAPE_LEFT
+        Surface.ROTATION_180 -> Orientation.PORTRAIT_UPSIDE_DOWN
+        Surface.ROTATION_270 -> Orientation.LANDSCAPE_RIGHT
+        else -> Orientation.PORTRAIT
+      }
+
       val recording = RecordingSession(
         context,
         cameraId,
@@ -432,7 +448,7 @@ class CameraSession(private val context: Context, private val cameraManager: Cam
         enableAudio,
         fps,
         videoOutput.enableHdr,
-        orientation,
+        recordingOrientation,
         options,
         filePath,
         callback,
@@ -497,7 +513,8 @@ class CameraSession(private val context: Context, private val cameraManager: Cam
     fun onInitialized()
     fun onStarted()
     fun onStopped()
-    fun onVideoChunkReady(filepath: File, index: Int)
+    fun onVideoChunkReady(filepath: File, index: Int, durationUs: Long?)
+    fun onInitSegmentReady(filepath: File)
     fun onCodeScanned(codes: List<Barcode>, scannerFrame: CodeScannerFrame)
   }
 }

package/android/src/main/java/com/mrousavy/camera/core/ChunkedRecorder.kt

@@ -14,7 +14,7 @@ import java.io.File
 import java.nio.ByteBuffer
 
 class ChunkedRecordingManager(private val encoder: MediaCodec, private val outputDirectory: File, private val orientationHint: Int, private val iFrameInterval: Int, private val callbacks: CameraSession.Callback) :
-  MediaCodec.Callback() {
+  MediaCodec.Callback(), ChunkedRecorderInterface {
   companion object {
     private const val TAG = "ChunkedRecorder"
 
@@ -73,7 +73,7 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
 
   private val targetDurationUs = iFrameInterval * 1000000
 
-  val surface: Surface = encoder.createInputSurface()
+  override val surface: Surface = encoder.createInputSurface()
 
   init {
     if (!this.outputDirectory.exists()) {
@@ -95,7 +95,9 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
     fun finish() {
       muxer.stop()
       muxer.release()
-      callbacks.onVideoChunkReady(filepath, chunkIndex)
+      // Calculate duration from start time - this is approximate
+      // The new FragmentedRecordingManager provides accurate duration
+      callbacks.onVideoChunkReady(filepath, chunkIndex, null)
     }
   }
 
@@ -105,6 +107,12 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
     muxerContext?.finish()
     chunkIndex++
 
+    val format = this.encodedFormat
+    if (format == null) {
+      Log.e(TAG, "Cannot create muxer: encodedFormat is null (onOutputFormatChanged not called yet)")
+      return
+    }
+
     val newFileName = "$chunkIndex.mp4"
     val newOutputFile = File(this.outputDirectory, newFileName)
     Log.i(TAG, "Creating new muxer for file: $newFileName")
@@ -114,7 +122,7 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
     )
     muxer.setOrientationHint(orientationHint)
     muxerContext = MuxerContext(
-        muxer, newOutputFile, chunkIndex, bufferInfo.presentationTimeUs, this.encodedFormat!!, this.callbacks
+        muxer, newOutputFile, chunkIndex, bufferInfo.presentationTimeUs, format, this.callbacks
     )
   }
 
@@ -123,15 +131,16 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
   }
 
   private fun chunkLengthUs(bufferInfo: BufferInfo): Long {
-    return bufferInfo.presentationTimeUs - muxerContext!!.startTimeUs
+    val context = muxerContext ?: return 0L
+    return bufferInfo.presentationTimeUs - context.startTimeUs
   }
 
-  fun start() {
+  override fun start() {
     encoder.start()
     recording = true
   }
 
-  fun finish() {
+  override fun finish() {
     synchronized(this) {
       muxerContext?.finish()
       recording = false
@@ -155,7 +164,13 @@ class ChunkedRecordingManager(private val encoder: MediaCodec, private val outpu
       if (muxerContext == null || (atKeyframe(bufferInfo) && chunkLengthUs(bufferInfo) >= targetDurationUs)) {
         this.createNextMuxer(bufferInfo)
       }
-      muxerContext!!.muxer.writeSampleData(muxerContext!!.videoTrack, encodedData, bufferInfo)
+      val context = muxerContext
+      if (context == null) {
+        Log.e(TAG, "Cannot write sample data: muxerContext is null")
+        encoder.releaseOutputBuffer(index, false)
+        return
+      }
+      context.muxer.writeSampleData(context.videoTrack, encodedData, bufferInfo)
       encoder.releaseOutputBuffer(index, false)
     }
   }

package/android/src/main/java/com/mrousavy/camera/core/ChunkedRecorderInterface.kt

@@ -0,0 +1,15 @@
+package com.mrousavy.camera.core
+
+import android.view.Surface
+
+/**
+ * Common interface for chunked video recorders.
+ * Implemented by both ChunkedRecordingManager (regular MP4) and
+ * FragmentedRecordingManager (HLS-compatible fMP4).
+ */
+interface ChunkedRecorderInterface {
+    val surface: Surface
+
+    fun start()
+    fun finish()
+}

package/android/src/main/java/com/mrousavy/camera/core/FragmentedRecordingManager.kt

@@ -0,0 +1,180 @@
+package com.mrousavy.camera.core
+
+import android.media.MediaCodec
+import android.media.MediaCodec.BufferInfo
+import android.media.MediaCodecInfo
+import android.media.MediaFormat
+import android.util.Log
+import android.util.Size
+import android.view.Surface
+import com.mrousavy.camera.types.Orientation
+import com.mrousavy.camera.types.RecordVideoOptions
+import java.io.File
+
+/**
+ * A recording manager that produces HLS-compatible fragmented MP4 segments.
+ *
+ * Uses HlsMuxer (following Android's MediaMuxer pattern) to produce:
+ * - init.mp4: Initialization segment (ftyp + moov with mvex)
+ * - 0.mp4, 1.mp4, ...: Media segments (moof + mdat)
+ */
+class FragmentedRecordingManager(
+    private val encoder: MediaCodec,
+    private val muxer: HlsMuxer,
+    private val configuredFps: Int
+) : MediaCodec.Callback(), ChunkedRecorderInterface {
+
+    companion object {
+        private const val TAG = "FragmentedRecorder"
+        private const val DEFAULT_SEGMENT_DURATION_SECONDS = 6
+
+        fun fromParams(
+            callbacks: CameraSession.Callback,
+            size: Size,
+            enableAudio: Boolean,
+            fps: Int? = null,
+            cameraOrientation: Orientation,
+            bitRate: Int,
+            options: RecordVideoOptions,
+            outputDirectory: File,
+            segmentDurationSeconds: Int = DEFAULT_SEGMENT_DURATION_SECONDS
+        ): FragmentedRecordingManager {
+            val mimeType = options.videoCodec.toMimeType()
+            // Use cameraOrientation from Android (computed from device rotation)
+            // instead of options.orientation from JS which may be stale
+            val recordingOrientationDegrees = cameraOrientation.toDegrees()
+
+            // Swap dimensions based on orientation - same logic as ChunkedRecordingManager
+            // When camera is in landscape orientation, we need to swap width/height for the encoder
+            val (width, height) = if (cameraOrientation.isLandscape()) {
+                size.height to size.width
+            } else {
+                size.width to size.height
+            }
+
+            Log.d(TAG, "Input size: ${size.width}x${size.height}, " +
+                    "encoder size: ${width}x${height}, " +
+                    "orientation: $cameraOrientation ($recordingOrientationDegrees°)")
+
+            val format = MediaFormat.createVideoFormat(mimeType, width, height)
+            val codec = MediaCodec.createEncoderByType(mimeType)
+
+            format.setInteger(
+                MediaFormat.KEY_COLOR_FORMAT,
+                MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface
+            )
+
+            val effectiveFps = fps ?: 30
+            format.setInteger(MediaFormat.KEY_FRAME_RATE, effectiveFps)
+            format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, segmentDurationSeconds)
+            format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate)
+
+            Log.d(TAG, "Video Format: $format, orientation: $recordingOrientationDegrees")
+
+            codec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE)
+
+            // Create muxer with callbacks and orientation
+            val muxer = HlsMuxer(
+                outputDirectory = outputDirectory,
+                callback = object : HlsMuxer.Callback {
+                    override fun onInitSegmentReady(file: File) {
+                        callbacks.onInitSegmentReady(file)
+                    }
+
+                    override fun onMediaSegmentReady(file: File, index: Int, durationUs: Long) {
+                        callbacks.onVideoChunkReady(file, index, durationUs)
+                    }
+                },
+                orientationDegrees = recordingOrientationDegrees
+            )
+            muxer.setSegmentDuration(segmentDurationSeconds * 1_000_000L)
+
+            Log.d(TAG, "Created HlsMuxer with orientation: $recordingOrientationDegrees degrees, fps: $effectiveFps")
+
+            return FragmentedRecordingManager(codec, muxer, effectiveFps)
+        }
+    }
+
+    private var recording = false
+    private var muxerStarted = false
+    private var trackIndex = -1
+
+    override val surface: Surface = encoder.createInputSurface()
+
+    init {
+        encoder.setCallback(this)
+    }
+
+    override fun start() {
+        encoder.start()
+        recording = true
+    }
+
+    override fun finish() {
+        synchronized(this) {
+            recording = false
+
+            if (muxerStarted) {
+                muxer.stop()
+                muxer.release()
+            }
+
+            try {
+                encoder.stop()
+                encoder.release()
+            } catch (e: Exception) {
+                Log.e(TAG, "Error stopping encoder", e)
+            }
+        }
+    }
+
+    // MediaCodec.Callback methods
+
+    override fun onInputBufferAvailable(codec: MediaCodec, index: Int) {
+        // Not used for Surface input
+    }
+
+    override fun onOutputBufferAvailable(codec: MediaCodec, index: Int, bufferInfo: BufferInfo) {
+        synchronized(this) {
+            if (!recording) {
+                encoder.releaseOutputBuffer(index, false)
+                return
+            }
+
+            if (!muxerStarted) {
+                encoder.releaseOutputBuffer(index, false)
+                return
+            }
+
+            val buffer = encoder.getOutputBuffer(index)
+            if (buffer == null) {
+                Log.e(TAG, "getOutputBuffer returned null")
+                encoder.releaseOutputBuffer(index, false)
+                return
+            }
+
+            try {
+                muxer.writeSampleData(trackIndex, buffer, bufferInfo)
+            } catch (e: Exception) {
+                Log.e(TAG, "Error writing sample", e)
+            }
+
+            encoder.releaseOutputBuffer(index, false)
+        }
+    }
+
+    override fun onError(codec: MediaCodec, e: MediaCodec.CodecException) {
+        Log.e(TAG, "Codec error: ${e.message}")
+    }
+
+    override fun onOutputFormatChanged(codec: MediaCodec, format: MediaFormat) {
+        synchronized(this) {
+            Log.i(TAG, "Output format changed: $format")
+
+            // Pass configured fps to muxer (not the encoder's output format fps which may differ)
+            trackIndex = muxer.addTrack(format, configuredFps)
+            muxer.start()
+            muxerStarted = true
+        }
+    }
+}

package/android/src/main/java/com/mrousavy/camera/core/PreviewView.kt

@@ -9,8 +9,10 @@ import android.os.Looper
 import android.util.Log
 import android.util.Size
 import android.view.PixelCopy
+import android.view.Surface
 import android.view.SurfaceHolder
 import android.view.SurfaceView
+import android.view.WindowManager
 import com.facebook.react.bridge.UiThreadUtil
 import com.mrousavy.camera.extensions.resize
 import com.mrousavy.camera.extensions.rotatedBy
@@ -150,6 +152,8 @@ class PreviewView(context: Context, callback: SurfaceHolder.Callback) :
     val width = frame.width()
     val height = frame.height()
 
+    // Create bitmap matching surface frame dimensions for PixelCopy
+    // The original code swapped dimensions assuming landscape input - keep that for consistency
     val bitmap = Bitmap.createBitmap(height, width, Bitmap.Config.ARGB_8888)
 
     // Use a coroutine to suspend until the PixelCopy request is complete
@@ -159,7 +163,23 @@ class PreviewView(context: Context, callback: SurfaceHolder.Callback) :
         bitmap,
         { copyResult ->
           if (copyResult == PixelCopy.SUCCESS) {
-            continuation.resume(rotateBitmap90CounterClockwise(bitmap))
+            // Get actual device rotation from WindowManager instead of relying on
+            // the orientation prop, which may not update on Android when rotating
+            // between landscape-left and landscape-right.
+            val windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
+            val deviceRotation = windowManager.defaultDisplay.rotation
+
+            val actualOrientation = when (deviceRotation) {
+                Surface.ROTATION_0 -> Orientation.PORTRAIT
+                Surface.ROTATION_90 -> Orientation.LANDSCAPE_LEFT
+                Surface.ROTATION_180 -> Orientation.PORTRAIT_UPSIDE_DOWN
+                Surface.ROTATION_270 -> Orientation.LANDSCAPE_RIGHT
+                else -> Orientation.PORTRAIT
+            }
+
+            Log.i(TAG, "getBitmap: orientation prop = $orientation, deviceRotation = $deviceRotation, actualOrientation = $actualOrientation")
+
+            continuation.resume(bitmap.transformBitmap(actualOrientation))
           } else {
             continuation.resumeWithException(
                 RuntimeException("PixelCopy failed with error code $copyResult")

package/android/src/main/java/com/mrousavy/camera/core/RecordingSession.kt

@@ -14,6 +14,7 @@ import android.os.Environment
 import java.text.SimpleDateFormat
 import java.util.Locale
 import java.util.Date
+
 class RecordingSession(
   context: Context,
   val cameraId: String,
@@ -27,6 +28,8 @@ class RecordingSession(
   private val callback: (video: Video) -> Unit,
   private val onError: (error: CameraError) -> Unit,
   private val allCallbacks: CameraSession.Callback,
+  // Use FragmentedRecordingManager for HLS-compatible fMP4 output
+  private val useFragmentedMp4: Boolean = true
 ) {
   companion object {
     private const val TAG = "RecordingSession"
@@ -34,6 +37,9 @@ class RecordingSession(
     private const val AUDIO_SAMPLING_RATE = 44_100
     private const val AUDIO_BIT_RATE = 16 * AUDIO_SAMPLING_RATE
     private const val AUDIO_CHANNELS = 1
+
+    // Segment duration in seconds (matching iOS default of 6 seconds)
+    private const val SEGMENT_DURATION_SECONDS = 6
   }
 
   data class Video(val path: String, val durationMs: Long, val size: Size)
@@ -41,7 +47,23 @@ class RecordingSession(
   private val outputPath: File = File(filePath)
 
   private val bitRate = getBitRate()
-  private val recorder = ChunkedRecordingManager.fromParams(
+
+  // Use FragmentedRecordingManager for HLS-compatible fMP4 output,
+  // or fall back to ChunkedRecordingManager for regular MP4 chunks
+  private val recorder: ChunkedRecorderInterface = if (useFragmentedMp4) {
+    FragmentedRecordingManager.fromParams(
+      allCallbacks,
+      size,
+      enableAudio,
+      fps,
+      cameraOrientation,
+      bitRate,
+      options,
+      outputPath,
+      SEGMENT_DURATION_SECONDS
+    )
+  } else {
+    ChunkedRecordingManager.fromParams(
       allCallbacks,
       size,
       enableAudio,
@@ -51,6 +73,7 @@ class RecordingSession(
       options,
       outputPath
     )
+  }
   private var startTime: Long? = null
   val surface: Surface
     get() {

package/android/src/main/java/com/mrousavy/camera/frameprocessor/VisionCameraProxy.kt

@@ -9,7 +9,6 @@ import com.facebook.jni.HybridData
 import com.facebook.proguard.annotations.DoNotStrip
 import com.facebook.react.bridge.ReactApplicationContext
 import com.facebook.react.bridge.UiThreadUtil
-// import com.facebook.react.turbomodule.core.CallInvokerHolderImpl // Commented out due to RN 0.79+ compatibility
 import com.facebook.react.uimanager.UIManagerHelper
 import com.mrousavy.camera.CameraView
 import com.mrousavy.camera.core.ViewNotFoundError
@@ -78,6 +77,9 @@ class VisionCameraProxy(private val reactContext: ReactApplicationContext) {
     FrameProcessorPluginRegistry.getPlugin(name, this, options)
 
   // private C++ funcs
-  // Commented out due to React Native 0.79+ API compatibility issues
+  // Frame Processors are disabled - native registration is skipped via VISION_CAMERA_ENABLE_FRAME_PROCESSORS=OFF
-  // private external fun initHybrid(jsContext: Long, jsCallInvokerHolder: CallInvokerHolderImpl, scheduler: VisionCameraScheduler): HybridData
+  // This method is never called or registered, kept for reference only
+  // @DoNotStrip
+  // @Keep
+  // private external fun initHybrid(jsContext: Long, jsCallInvokerHolder: Any, scheduler: VisionCameraScheduler): HybridData
 }

package/android/src/main/java/com/mrousavy/camera/utils/withPromise.kt

@@ -11,6 +11,6 @@ inline fun withPromise(promise: Promise, closure: () -> Any?) {
   } catch (e: Throwable) {
     e.printStackTrace()
     val error = if (e is CameraError) e else UnknownCameraError(e)
-    promise.reject("${error.domain}/${error.id}", error.message, error.cause)
+    promise.reject("${error.domain}/${error.id}", error.message ?: "Unknown error", error.cause)
   }
 }