Android: Download 4k Video From Youtube

<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="24dp" android:text="Sample Videos (Public Domain / CC)" android:textStyle="bold" android:textSize="16sp" />

private fun checkPermissionsAndDownload(url: String, fileName: String) { val permissions = mutableListOf<String>() if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) { if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) { permissions.add(Manifest.permission.WRITE_EXTERNAL_STORAGE) } } if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) { if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) { permissions.add(Manifest.permission.POST_NOTIFICATIONS) } } if (permissions.isNotEmpty()) { permissionLauncher.launch(permissions.toTypedArray()) } else { startDownload(url, fileName) } }

<com.google.android.material.textfield.TextInputEditText android:id="@+id/etFileName" android:layout_width="match_parent" android:layout_height="wrap_content" /> </com.google.android.material.textfield.TextInputLayout>

<com.google.android.material.textfield.TextInputEditText android:id="@+id/etUrl" android:layout_width="match_parent" android:layout_height="wrap_content" android:inputType="textUri" /> </com.google.android.material.textfield.TextInputLayout> download 4k video from youtube android

<com.google.android.material.button.MaterialButton android:id="@+id/btnOpenDownloads" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="Open Downloads" style="@style/Widget.MaterialComponents.Button.OutlinedButton" />

<com.google.android.material.button.MaterialButton android:id="@+id/btnDownload" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16dp" android:text="Download Video" app:icon="@android:drawable/stat_sys_download" />

private lateinit var binding: ActivityMainBinding 1. Add Permissions to AndroidManifest.xml &lt

<LinearLayout android:id="@+id/samplesContainer" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:orientation="vertical" />

However, I can help you build an that demonstrates video downloading concepts using legal sources (public domain, Creative Commons, or your own content). Below is a complete implementation. Legal Android Video Downloader App (Educational) This app downloads videos from public test URLs (not YouTube) to demonstrate the concept. 1. Add Permissions to AndroidManifest.xml <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" /> <uses-permission android:name="android.permission.FOREGROUND_SERVICE" /> <uses-permission android:name="android.permission.POST_NOTIFICATIONS" /> <!-- For Android 10+ --> <uses-permission android:name="android.permission.ACCESS_MEDIA_LOCATION" />

<application android:requestLegacyExternalStorage="true" ... > dependencies { implementation("androidx.core:core-ktx:1.12.0") implementation("androidx.appcompat:appcompat:1.6.1") implementation("com.google.android.material:material:1.11.0") // Networking implementation("com.squareup.okhttp3:okhttp:4.12.0") implementation("com.squareup.okhttp3:logging-interceptor:4.12.0") !-- For Android 10+ --&gt

override fun onDestroy() { super.onDestroy() if (isBound) { unbindService(connection) isBound = false } }

fun downloadVideo(url: String, fileName: String, onProgress: (Float) -> Unit, onComplete: (File?) -> Unit) { serviceScope.launch { try { startForegroundWithNotification() val request = Request.Builder().url(url).build() val response = client.newCall(request).execute() if (!response.isSuccessful) { withContext(Dispatchers.Main) { onComplete(null) } return@launch } val contentLength = response.body?.contentLength() ?: -1L val inputStream = response.body?.byteStream() val downloadsDir = getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS) val outputFile = File(downloadsDir, "$fileName.mp4") FileOutputStream(outputFile).use { outputStream -> val buffer = ByteArray(8192) var bytesRead: Int var totalBytesRead = 0L while (inputStream?.read(buffer).also { bytesRead = it ?: -1 } != -1) { outputStream.write(buffer, 0, bytesRead) totalBytesRead += bytesRead if (contentLength > 0) { val progress = (totalBytesRead.toFloat() / contentLength) * 100 withContext(Dispatchers.Main) { onProgress(progress) updateNotification(progress.toInt()) } } } } inputStream?.close() withContext(Dispatchers.Main) { onComplete(outputFile) } stopForeground(false) } catch (e: Exception) { e.printStackTrace() withContext(Dispatchers.Main) { onComplete(null) } } } }