diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 9909a0d..ada7ef1 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -82,7 +82,9 @@ dependencies {
     implementation("org.jetbrains.kotlinx:kotlinx-collections-immutable:0.3.7")
     implementation("com.godaddy.android.colorpicker:compose-color-picker:0.7.0")
     implementation("com.godaddy.android.colorpicker:compose-color-picker-android:0.7.0")
-    implementation("com.arthenica:ffmpeg-kit-min:6.0-2")
+    // TODO: ffmpeg-kit was retired and removed from Maven Central as of April 2025
+    // Need to find alternative or community fork
+    // implementation("com.arthenica:ffmpeg-kit-min:6.0-2")
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("androidx.test.ext:junit:1.2.1")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.6.1")
diff --git a/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/TransformManager.kt b/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/TransformManager.kt
index f715828..c16e688 100644
--- a/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/TransformManager.kt
+++ b/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/TransformManager.kt
@@ -31,9 +31,10 @@ import androidx.media3.transformer.TransformationRequest
 import androidx.media3.transformer.Transformer
 import androidx.media3.transformer.Transformer.PROGRESS_STATE_NOT_STARTED
 import androidx.media3.transformer.Transformer.PROGRESS_STATE_UNAVAILABLE
-import com.arthenica.ffmpegkit.FFmpegKit
-import com.arthenica.ffmpegkit.FFmpegKitConfig
-import com.arthenica.ffmpegkit.SessionState
+// TODO: ffmpeg-kit was retired and removed from Maven Central
+// import com.arthenica.ffmpegkit.FFmpegKit
+// import com.arthenica.ffmpegkit.FFmpegKitConfig
+// import com.arthenica.ffmpegkit.SessionState
 import io.github.devhyper.openvideoeditor.misc.PROJECT_FILE_EXT
 import io.github.devhyper.openvideoeditor.misc.getFileNameFromUri
 import kotlinx.collections.immutable.ImmutableList
@@ -405,6 +406,7 @@ class TransformManager {
         }
     }
 
+    // TODO: ffmpeg-kit was retired - lossless cut feature temporarily disabled
     private fun ffmpegLosslessCut(
         context: Context,
         trim: Trim,
@@ -412,6 +414,9 @@ class TransformManager {
         audioFallback: Boolean,
         onFFmpegError: () -> Unit
     ) {
+        // Temporarily disabled - ffmpeg-kit library no longer available
+        onFFmpegError()
+        /*
         val ffmpegInputPath =
             FFmpegKitConfig.getSafParameterForRead(context, projectData.uri.toUri())
         val ffmpegOutputPath = FFmpegKitConfig.getSafParameterForWrite(context, outputPath.toUri())
@@ -433,6 +438,7 @@ class TransformManager {
                 ffmpegLosslessCut(context, trim, outputPath, true, onFFmpegError)
             }
         }
+        */
     }
 
     @SuppressLint("Recycle")
@@ -490,27 +496,17 @@ class TransformManager {
     }
 
     fun cancel() {
-        FFmpegKit.cancel()
+        // FFmpegKit.cancel()  // TODO: ffmpeg-kit disabled
         transformer?.cancel()
     }
 
     fun getProgress(): Float {
-        val ffmpegSessions = FFmpegKit.listSessions()
-        return if (ffmpegSessions.isNotEmpty()) {
-            val sessionState = ffmpegSessions.last().state
-            return when (sessionState) {
-                SessionState.COMPLETED -> 1F
-                SessionState.RUNNING -> 0.5F
-                SessionState.CREATED -> 0F
-                else -> -1F
-            }
-        } else {
-            val progressHolder = ProgressHolder()
-            when (transformer?.getProgress(progressHolder)) {
-                PROGRESS_STATE_UNAVAILABLE -> -1F
-                PROGRESS_STATE_NOT_STARTED -> 1F
-                else -> progressHolder.progress.toFloat() / 100F
-            }
+        // TODO: ffmpeg-kit disabled - only using transformer progress now
+        val progressHolder = ProgressHolder()
+        return when (transformer?.getProgress(progressHolder)) {
+            PROGRESS_STATE_UNAVAILABLE -> -1F
+            PROGRESS_STATE_NOT_STARTED -> 1F
+            else -> progressHolder.progress.toFloat() / 100F
         }
     }
 }
diff --git a/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/UserEffects.kt b/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/UserEffects.kt
index 42ae336..866ac36 100644
--- a/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/UserEffects.kt
+++ b/app/src/main/java/io/github/devhyper/openvideoeditor/videoeditor/UserEffects.kt
@@ -4,6 +4,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.RotateRight
 import androidx.compose.material.icons.filled.Crop
 import androidx.compose.material.icons.filled.Filter
+import androidx.compose.material.icons.filled.Flip
 import androidx.compose.material.icons.filled.FormatSize
 import androidx.compose.material.icons.filled.InvertColors
 import androidx.compose.material.icons.filled.TextFormat
@@ -95,6 +96,24 @@ val dialogUserEffectsArray: ImmutableList<DialogUserEffect> = persistentListOf(
     ) { args ->
         val degrees = args["Degrees"]!!.toFloat();
         { ScaleAndRotateTransformation.Builder().setRotationDegrees(degrees).build() }
+    },
+    DialogUserEffect(
+        R.string.mirror,
+        { Icons.Filled.Flip },
+        persistentListOf(
+            EffectDialogSetting(
+                key = "Direction",
+                stringResId = R.string.direction,
+                dropdownOptions = mutableListOf(
+                    "Horizontal",
+                    "Vertical"
+                )
+            )
+        )
+    ) { args ->
+        val direction = args["Direction"]!!
+        val (x, y) = if (direction == "Horizontal") -1f to 1f else 1f to -1f
+        { ScaleAndRotateTransformation.Builder().setScale(x, y).build() }
     }
 )
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 1d351e8..b924706 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -58,6 +58,8 @@
     <string name="y" translatable="false">Y</string>
     <string name="rotate">Rotate</string>
     <string name="degrees">Degrees</string>
+    <string name="mirror">Mirror</string>
+    <string name="direction">Direction</string>
     <string name="crop">Crop</string>
     <string name="framerate_must_lower">Framerate must be lower than the framerate of the original video </string>
     <string name="lossless_cut">Lossless cut</string>
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755