Rudimentary ffmpeg thumbnail

app/build.gradle

@@ -133,7 +133,7 @@ dependencies {
 
 
     // Use the most recent version of CameraX
-    def cameraX_version = '1.1.0-rc01'
+    def cameraX_version = '1.1.0-rc02'
     implementation "androidx.camera:camera-core:$cameraX_version"
     implementation "androidx.camera:camera-camera2:$cameraX_version"
     // CameraX Lifecycle library
@@ -142,8 +142,6 @@ dependencies {
     // CameraX View class
     implementation "androidx.camera:camera-view:$cameraX_version"
 
-    implementation 'com.davemorrissey.labs:subsampling-scale-image-view-androidx:3.10.0'
-
     def room_version = "2.4.2"
     implementation "androidx.room:room-runtime:$room_version"
     kapt "androidx.room:room-compiler:$room_version"
@@ -155,6 +153,8 @@ dependencies {
      * ----------------------------------------------------------
      */
 
+    implementation 'com.davemorrissey.labs:subsampling-scale-image-view-androidx:3.10.0'
+    implementation 'com.arthenica:ffmpeg-kit-full:4.5.1-1.LTS'
 
     implementation 'com.google.android.material:material:1.6.1'
 

app/src/main/AndroidManifest.xml

@@ -26,6 +26,11 @@
             android:name=".posts.AlbumActivity"
             android:exported="false"
             android:theme="@style/AppTheme.ActionBar.Transparent"/>
+        <activity
+            android:name=".postCreation.photoEdit.VideoEditActivity"
+            android:exported="false"
+            android:theme="@style/AppTheme.ActionBar.Transparent"/>
+
         <activity
             android:name=".posts.MediaViewerActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"

app/src/main/java/org/pixeldroid/app/postCreation/PostCreationActivity.kt

@@ -37,6 +37,9 @@ import org.pixeldroid.app.utils.api.objects.Attachment
 import org.pixeldroid.app.utils.db.entities.InstanceDatabaseEntity
 import org.pixeldroid.app.utils.db.entities.UserDatabaseEntity
 import okhttp3.MultipartBody
+import org.pixeldroid.app.postCreation.photoEdit.VideoEditActivity
+import org.pixeldroid.app.posts.PostActivity
+import org.pixeldroid.app.utils.api.objects.Status
 import retrofit2.HttpException
 import java.io.File
 import java.io.FileNotFoundException
@@ -447,16 +450,14 @@ class PostCreationActivity : BaseActivity() {
     }
 
     private fun edit(position: Int) {
-        if(photoData[position].video){
-            AlertDialog.Builder(this).apply {
-                setMessage(R.string.video_edit_not_yet_supported)
-                setNegativeButton(android.R.string.ok) { _, _ -> }
-            }.show()
-        } else {
-            val intent = Intent(this, PhotoEditActivity::class.java)
-                .putExtra(PhotoEditActivity.PICTURE_URI, photoData[position].imageUri)
-                .putExtra(PhotoEditActivity.PICTURE_POSITION, position)
-            editResultContract.launch(intent)
-        }
+        val intent = Intent(
+            this,
+            if(photoData[position].video) VideoEditActivity::class.java else PhotoEditActivity::class.java
+        )
+            .putExtra(PhotoEditActivity.PICTURE_URI, photoData[position].imageUri)
+            .putExtra(PhotoEditActivity.PICTURE_POSITION, position)
+
+        editResultContract.launch(intent)
+
     }
 }

app/src/main/java/org/pixeldroid/app/postCreation/photoEdit/VideoEditActivity.kt

@@ -0,0 +1,57 @@
+package org.pixeldroid.app.postCreation.photoEdit
+
+import android.net.Uri
+import android.os.Bundle
+import android.util.Log
+import androidx.core.net.toUri
+import com.arthenica.ffmpegkit.*
+import com.arthenica.ffmpegkit.MediaInformation.KEY_DURATION
+import com.bumptech.glide.Glide
+import org.pixeldroid.app.databinding.ActivityVideoEditBinding
+import org.pixeldroid.app.utils.BaseActivity
+import java.io.File
+
+
+class VideoEditActivity : BaseActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val binding = ActivityVideoEditBinding.inflate(layoutInflater)
+
+        setContentView(binding.root)
+        val uri = intent.getParcelableExtra(PhotoEditActivity.PICTURE_URI) as Uri?
+        val videoPosition = intent.getIntExtra(PhotoEditActivity.PICTURE_POSITION, -1)
+
+        val inputVideoPath =if(uri.toString().startsWith("content://")) FFmpegKitConfig.getSafParameterForRead(this, uri) else uri.toString()
+        val inputVideoPath2 =if(uri.toString().startsWith("content://")) FFmpegKitConfig.getSafParameterForRead(this, uri) else uri.toString()
+        val mediaInformation: MediaInformation? = FFprobeKit.getMediaInformation(inputVideoPath).mediaInformation
+
+        val duration: Long? = mediaInformation?.getNumberProperty(KEY_DURATION)
+
+        val file = File.createTempFile("temp_img", ".png").toUri()
+
+        val outputImagePath =if(file.toString().startsWith("content://")) FFmpegKitConfig.getSafParameterForWrite(this, file) else file.toString()
+
+        val session = FFmpegKit.execute(
+            "-i $inputVideoPath2 -filter_complex \"select='not(mod(n,1000))',scale=240:-1,tile=layout=4x1\" -vframes 1 -q:v 2 -y $outputImagePath"
+        )
+        if (ReturnCode.isSuccess(session.returnCode)) {
+            Glide.with(this).load(file).into(binding.thumbnails)
+            // SUCCESS
+        } else if (ReturnCode.isCancel(session.returnCode)) {
+
+            // CANCEL
+        } else {
+
+            // FAILURE
+            Log.d("VideoEditActivity",
+                String.format("Command failed with state %s and rc %s.%s",
+                    session.state,
+                    session.returnCode,
+                    session.failStackTrace))
+        }
+
+    }
+    companion object {
+        const val VIDEO_TAG = "VideoEditTag"
+    }
+}

app/src/main/res/layout/activity_video_edit.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/black">
+
+    <ImageView
+        android:id="@+id/thumbnails"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:contentDescription="@string/thumbnail_reel_video_edit"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toTopOf="parent"/>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/strings.xml

@@ -262,4 +262,5 @@ For more info about Pixelfed, you can check here: https://pixelfed.org"</string>
     <string name="no_storage_permission">Storage permission not granted, grant the permission in settings if you want to let PixelDroid show the thumbnail</string>
     <string name="play_video">Play video</string>
     <string name="video_edit_not_yet_supported">Video editing is not yet supported</string>
+    <string name="thumbnail_reel_video_edit">Reel showing thumbnails of the video you are editing</string>
 </resources>

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.1.3'
+        classpath 'com.android.tools.build:gradle:7.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Tue Jun 07 20:42:16 CEST 2022
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME