diff --git a/app/src/main/java/org/schabi/newpipe/DownloaderImpl.java b/app/src/main/java/org/schabi/newpipe/DownloaderImpl.java
index 5dd9d1b74..7e4ac304e 100644
--- a/app/src/main/java/org/schabi/newpipe/DownloaderImpl.java
+++ b/app/src/main/java/org/schabi/newpipe/DownloaderImpl.java
@@ -1,26 +1,42 @@
 package org.schabi.newpipe;
 
+import android.os.Build;
 import android.text.TextUtils;
 
 import org.schabi.newpipe.extractor.downloader.Downloader;
 import org.schabi.newpipe.extractor.downloader.Request;
 import org.schabi.newpipe.extractor.downloader.Response;
 import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
+import org.schabi.newpipe.util.TLSSocketFactoryCompat;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
-import androidx.annotation.NonNull;
+import javax.net.ssl.SSLSocketFactory;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
+import okhttp3.CipherSuite;
+import okhttp3.ConnectionSpec;
 import okhttp3.OkHttpClient;
 import okhttp3.RequestBody;
 import okhttp3.ResponseBody;
 
+import static org.schabi.newpipe.MainActivity.DEBUG;
+
 public class DownloaderImpl extends Downloader {
     public static final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0";
 
@@ -29,6 +45,9 @@ public class DownloaderImpl extends Downloader {
     private OkHttpClient client;
 
     private DownloaderImpl(OkHttpClient.Builder builder) {
+        if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
+            enableModernTLS(builder);
+        }
         this.client = builder
                 .readTimeout(30, TimeUnit.SECONDS)
                 //.cache(new Cache(new File(context.getExternalCacheDir(), "okhttp"), 16 * 1024 * 1024))
@@ -154,4 +173,47 @@ public class DownloaderImpl extends Downloader {
 
         return new Response(response.code(), response.message(), response.headers().toMultimap(), responseBodyToReturn);
     }
+
+    /**
+     * Enable TLS 1.2 and 1.1 on Android Kitkat. This function is mostly taken from the documentation of
+     * OkHttpClient.Builder.sslSocketFactory(_,_)
+     * <p>
+     * If there is an error, the function will safely fall back to doing nothing and printing the error to the console.
+     *
+     * @param builder The HTTPClient Builder on which TLS is enabled on (will be modified in-place)
+     */
+    private static void enableModernTLS(OkHttpClient.Builder builder) {
+        try {
+            // get the default TrustManager
+            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
+                    TrustManagerFactory.getDefaultAlgorithm());
+            trustManagerFactory.init((KeyStore) null);
+            TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
+            if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
+                throw new IllegalStateException("Unexpected default trust managers:"
+                        + Arrays.toString(trustManagers));
+            }
+            X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
+
+            // insert our own TLSSocketFactory
+            SSLSocketFactory sslSocketFactory = TLSSocketFactoryCompat.getInstance();
+
+            builder.sslSocketFactory(sslSocketFactory, trustManager);
+
+            // This will try to enable all modern CipherSuites(+2 more) that are supported on the device.
+            // Necessary because some servers (e.g. Framatube.org) don't support the old cipher suites.
+            // https://github.com/square/okhttp/issues/4053#issuecomment-402579554
+            List<CipherSuite> cipherSuites = new ArrayList<>();
+            cipherSuites.addAll(ConnectionSpec.MODERN_TLS.cipherSuites());
+            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA);
+            cipherSuites.add(CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA);
+            ConnectionSpec legacyTLS = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
+                    .cipherSuites(cipherSuites.toArray(new CipherSuite[0]))
+                    .build();
+
+            builder.connectionSpecs(Arrays.asList(legacyTLS, ConnectionSpec.CLEARTEXT));
+        } catch (KeyManagementException | NoSuchAlgorithmException | KeyStoreException e) {
+            if (DEBUG) e.printStackTrace();
+        }
+    }
 }
diff --git a/app/src/main/java/org/schabi/newpipe/MainActivity.java b/app/src/main/java/org/schabi/newpipe/MainActivity.java
index 927fc1589..90d299c7f 100644
--- a/app/src/main/java/org/schabi/newpipe/MainActivity.java
+++ b/app/src/main/java/org/schabi/newpipe/MainActivity.java
@@ -72,6 +72,7 @@ import org.schabi.newpipe.util.PeertubeHelper;
 import org.schabi.newpipe.util.PermissionHelper;
 import org.schabi.newpipe.util.ServiceHelper;
 import org.schabi.newpipe.util.StateSaver;
+import org.schabi.newpipe.util.TLSSocketFactoryCompat;
 import org.schabi.newpipe.util.ThemeHelper;
 
 import java.util.ArrayList;
@@ -108,6 +109,11 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         if (DEBUG) Log.d(TAG, "onCreate() called with: savedInstanceState = [" + savedInstanceState + "]");
 
+        // enable TLS1.1/1.2 for kitkat devices, to fix download and play for mediaCCC sources
+        if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
+            TLSSocketFactoryCompat.setAsDefault();
+        }
+
         ThemeHelper.setTheme(this, ServiceHelper.getSelectedServiceId(this));
 
         super.onCreate(savedInstanceState);
diff --git a/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java b/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
index d8c36e5cb..1f8d552d0 100644
--- a/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
+++ b/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
@@ -5,6 +5,7 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.text.InputType;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -203,17 +204,18 @@ public class PeertubeInstanceListFragment extends Fragment {
 
     private void showAddItemDialog(Context c) {
         final EditText urlET = new EditText(c);
+        urlET.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_URI);
         urlET.setHint(R.string.peertube_instance_add_help);
         AlertDialog dialog = new AlertDialog.Builder(c)
                 .setTitle(R.string.peertube_instance_add_title)
                 .setIcon(R.drawable.place_holder_peertube)
-                .setView(urlET)
                 .setNegativeButton(R.string.cancel, null)
                 .setPositiveButton(R.string.finish, (dialog1, which) -> {
                     String url = urlET.getText().toString();
                     addInstance(url);
                 })
                 .create();
+        dialog.setView(urlET, 50, 0, 50, 0);
         dialog.show();
     }
 
@@ -237,6 +239,7 @@ public class PeertubeInstanceListFragment extends Fragment {
 
     @Nullable
     private String cleanUrl(String url){
+        url = url.trim();
         // if protocol not present, add https
         if(!url.startsWith("http")){
             url = "https://" + url;
diff --git a/app/src/main/java/org/schabi/newpipe/util/TLSSocketFactoryCompat.java b/app/src/main/java/org/schabi/newpipe/util/TLSSocketFactoryCompat.java
new file mode 100644
index 000000000..d8b6f78f5
--- /dev/null
+++ b/app/src/main/java/org/schabi/newpipe/util/TLSSocketFactoryCompat.java
@@ -0,0 +1,104 @@
+package org.schabi.newpipe.util;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.Socket;
+import java.net.UnknownHostException;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocket;
+import javax.net.ssl.SSLSocketFactory;
+import javax.net.ssl.TrustManager;
+
+import static org.schabi.newpipe.MainActivity.DEBUG;
+
+
+/**
+ * This is an extension of the SSLSocketFactory which enables TLS 1.2 and 1.1.
+ * Created for usage on Android 4.1-4.4 devices, which haven't enabled those by default.
+ */
+public class TLSSocketFactoryCompat extends SSLSocketFactory {
+
+
+    private static TLSSocketFactoryCompat instance = null;
+
+    private SSLSocketFactory internalSSLSocketFactory;
+
+    public static TLSSocketFactoryCompat getInstance() throws NoSuchAlgorithmException, KeyManagementException {
+        if (instance != null) {
+            return instance;
+        }
+        return instance = new TLSSocketFactoryCompat();
+    }
+
+
+    public TLSSocketFactoryCompat() throws KeyManagementException, NoSuchAlgorithmException {
+        SSLContext context = SSLContext.getInstance("TLS");
+        context.init(null, null, null);
+        internalSSLSocketFactory = context.getSocketFactory();
+    }
+
+    public TLSSocketFactoryCompat(TrustManager[] tm) throws KeyManagementException, NoSuchAlgorithmException {
+        SSLContext context = SSLContext.getInstance("TLS");
+        context.init(null, tm, new java.security.SecureRandom());
+        internalSSLSocketFactory = context.getSocketFactory();
+    }
+
+    public static void setAsDefault() {
+        try {
+            HttpsURLConnection.setDefaultSSLSocketFactory(getInstance());
+        } catch (NoSuchAlgorithmException | KeyManagementException e) {
+            if (DEBUG) e.printStackTrace();
+        }
+    }
+
+    @Override
+    public String[] getDefaultCipherSuites() {
+        return internalSSLSocketFactory.getDefaultCipherSuites();
+    }
+
+    @Override
+    public String[] getSupportedCipherSuites() {
+        return internalSSLSocketFactory.getSupportedCipherSuites();
+    }
+
+    @Override
+    public Socket createSocket() throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket());
+    }
+
+    @Override
+    public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(s, host, port, autoClose));
+    }
+
+    @Override
+    public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
+    }
+
+    @Override
+    public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port, localHost, localPort));
+    }
+
+    @Override
+    public Socket createSocket(InetAddress host, int port) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port));
+    }
+
+    @Override
+    public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
+        return enableTLSOnSocket(internalSSLSocketFactory.createSocket(address, port, localAddress, localPort));
+    }
+
+    private Socket enableTLSOnSocket(Socket socket) {
+        if (socket != null && (socket instanceof SSLSocket)) {
+            ((SSLSocket) socket).setEnabledProtocols(new String[]{"TLSv1.1", "TLSv1.2"});
+        }
+        return socket;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 82fef9483..b36e2a390 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="main_bg_subtitle">Naciśnij Szukaj, aby zacząć</string>
-    <string name="install">Instaluj</string>
+    <string name="install">Zainstaluj</string>
     <string name="cancel">Anuluj</string>
     <string name="open_in_browser">Otwórz w przeglądarce</string>
     <string name="share">Udostępnij</string>
@@ -479,18 +479,18 @@
     <string name="error_unable_to_load_comments">Nie można załadować komentarzy</string>
     <string name="close">Zamknij</string>
     <string name="enable_playback_resume_title">Wznów odtwarzanie</string>
-    <string name="enable_playback_resume_summary">Przywróć pozycję odtwarzania</string>
-    <string name="enable_playback_state_lists_title">Pozycje na liście</string>
+    <string name="enable_playback_resume_summary">Przywróć ostatnią odtwarzaną pozycję</string>
+    <string name="enable_playback_state_lists_title">Pozycje na listach</string>
     <string name="enable_playback_state_lists_summary">Pokaż wskaźniki pozycji odtwarzania na listach</string>
     <string name="settings_category_clear_data_title">Wyczyść dane</string>
-    <string name="watch_history_states_deleted">Usunięto pozycję odtwarzania.</string>
-    <string name="missing_file">Plik przeniesiony lub usunięty</string>
-    <string name="overwrite_unrelated_warning">Plik o takiej nazwie już istnieje</string>
-    <string name="overwrite_failed">Nie można nadpisać tego pliku</string>
+    <string name="watch_history_states_deleted">Pozycja odtwarzania usunięta.</string>
+    <string name="missing_file">Plik usunięty lub przeniesiony</string>
+    <string name="overwrite_unrelated_warning">Plik z tą nazwą już istnieje</string>
+    <string name="overwrite_failed">nie można nadpisać pliku</string>
     <string name="download_already_pending">Pobieranie pliku z tą nazwą jest już w kolejce</string>
-    <string name="error_postprocessing_stopped">NewPipe został zamknięty w czasie pracy nad plikiem</string>
-    <string name="error_insufficient_storage">Brak wystarczającej ilości miejsca na urządzeniu</string>
-    <string name="error_progress_lost">Utracono postęp ponieważ plik został usunięty</string>
+    <string name="error_postprocessing_stopped">NewPipe został zamknięty podczas pracy nad plikiem</string>
+    <string name="error_insufficient_storage">Brak miejsca na urządzeniu</string>
+    <string name="error_progress_lost">Postęp został utracony ze wzgledu na usunięcie pliku</string>
     <string name="confirm_prompt">Czy jesteś pewien\?</string>
     <string name="enable_queue_limit">Ogranicz kolejkę pobierania</string>
     <string name="enable_queue_limit_desc">Tylko jedno pobieranie będzie realizowane w danej chwili</string>
@@ -502,8 +502,8 @@
     <string name="downloads_storage_ask_summary_kitkat">Zostaniesz zapytany, gdzie zapisać każde pobranie.
 \nWybierz SAF, jeśli chcesz pobrać na zewnętrzną kartę SD</string>
     <string name="downloads_storage_use_saf_title">Użyj SAF</string>
-    <string name="downloads_storage_use_saf_summary">Struktura dostępu do pamięci masowej umożliwia pobieranie danych na zewnętrzną kartę SD.
-\nUwaga: niektóre urządzenia nie są kompatybilne</string>
+    <string name="downloads_storage_use_saf_summary">Biblioteka dostępu do pamięci pozwala na pobieranie danych na zewnętrzną kartę.
+\nUwagi: Niektóre urządzenia nie są kompatybilne</string>
     <string name="clear_playback_states_title">Usuń pozycje odtwarzania</string>
     <string name="clear_playback_states_summary">Usuwa wszystkie pozycje odtwarzania</string>
     <string name="delete_playback_states_alert">Usunąć wszystkie pozycje odtwarzania\?</string>