-Added playback speed control dialog to allow full user control over player tempo and pitch parameters.

-Changed tempo and pitch button in service player activity and tempo button in main video player to open speed control dialog.
-Changed LIVE button to be no longer clickable when player position is at or beyond default position.
-Changed main video player to use AppCompatActivity rather than Activity.
-Fixed video player tempo button not updating when player speed parameters change.
-Fixed player crashing on lower sdk versions due to no MediaButtonReceiver, added intent back to manifest.
-Fixed inconsistent gradle library naming.
-Fixed stetho dependencies incorrect version.

app/build.gradle

@@ -51,9 +51,10 @@ ext {
     supportLibVersion = '27.1.0'
     exoPlayerLibVersion = '2.7.1'
     roomDbLibVersion = '1.0.0'
-    leakCanaryVersion = '1.5.4'
-    okHttpVersion = '1.5.0'
-    icepickVersion = '3.2.0'
+    leakCanaryLibVersion = '1.5.4'
+    okHttpLibVersion = '1.5.0'
+    icepickLibVersion = '3.2.0'
+    stethoLibVersion = '1.5.0'
 }
 dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2') {
@@ -81,8 +82,8 @@ dependencies {
     implementation "com.google.android.exoplayer:exoplayer:$exoPlayerLibVersion"
     implementation "com.google.android.exoplayer:extension-mediasession:$exoPlayerLibVersion"
 
-    debugImplementation "com.facebook.stetho:stetho:$okHttpVersion"
-    debugImplementation "com.facebook.stetho:stetho-urlconnection:$okHttpVersion"
+    debugImplementation "com.facebook.stetho:stetho:$stethoLibVersion"
+    debugImplementation "com.facebook.stetho:stetho-urlconnection:$stethoLibVersion"
     debugImplementation 'com.android.support:multidex:1.0.3'
 
     implementation 'io.reactivex.rxjava2:rxjava:2.1.10'
@@ -93,13 +94,13 @@ dependencies {
     implementation "android.arch.persistence.room:rxjava2:$roomDbLibVersion"
     annotationProcessor "android.arch.persistence.room:compiler:$roomDbLibVersion"
 
-    implementation "frankiesardo:icepick:$icepickVersion"
-    annotationProcessor "frankiesardo:icepick-processor:$icepickVersion"
+    implementation "frankiesardo:icepick:$icepickLibVersion"
+    annotationProcessor "frankiesardo:icepick-processor:$icepickLibVersion"
 
-    debugImplementation "com.squareup.leakcanary:leakcanary-android:$leakCanaryVersion"
-    betaImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leakCanaryVersion"
-    releaseImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leakCanaryVersion"
+    debugImplementation "com.squareup.leakcanary:leakcanary-android:$leakCanaryLibVersion"
+    betaImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leakCanaryLibVersion"
+    releaseImplementation "com.squareup.leakcanary:leakcanary-android-no-op:$leakCanaryLibVersion"
 
     implementation 'com.squareup.okhttp3:okhttp:3.9.1'
-    debugImplementation "com.facebook.stetho:stetho-okhttp3:$okHttpVersion"
+    debugImplementation "com.facebook.stetho:stetho-okhttp3:$okHttpLibVersion"
 }

app/src/main/AndroidManifest.xml

@@ -28,6 +28,12 @@
             </intent-filter>
         </activity>
 
+        <receiver android:name="android.support.v4.media.session.MediaButtonReceiver" >
+            <intent-filter>
+                <action android:name="android.intent.action.MEDIA_BUTTON" />
+            </intent-filter>
+        </receiver>
+
         <activity
             android:name=".player.old.PlayVideoActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"

app/src/main/java/org/schabi/newpipe/player/BasePlayer.java

@@ -553,7 +553,7 @@ public abstract class BasePlayer implements
                 // Ensure dynamic/livestream timeline changes does not cause negative position
                 if (isPlaylistStable && !isCurrentWindowValid() && !isSynchronizing) {
                     if (DEBUG) Log.d(TAG, "Playback - negative time position reached, " +
-                            "clamping position to default time.");
+                            "clamping position to 0ms.");
                     seekTo(/*clampToTime=*/0);
                 }
                 break;
@@ -639,7 +639,6 @@ public abstract class BasePlayer implements
                     "[" + getTimeString((int)recoveryPositionMillis) + "]");
             seekTo(recoveryPositionMillis);
             playQueue.unsetRecovery(currentSourceIndex);
-            isSynchronizing = false;
 
         } else if (isSynchronizing && simpleExoPlayer.isCurrentWindowDynamic()) {
             if (DEBUG) Log.d(TAG, "Playback - Synchronizing livestream to default time");
@@ -1111,6 +1110,24 @@ public abstract class BasePlayer implements
         return currentItem == null ? context.getString(R.string.unknown_content) : currentItem.getUploader();
     }
 
+    /** Checks if the current playback is a livestream AND is playing at or beyond the live edge */
+    public boolean isLiveEdge() {
+        if (simpleExoPlayer == null) return false;
+        final boolean isLive = simpleExoPlayer.isCurrentWindowDynamic();
+        if (!isLive) return false;
+
+        final Timeline currentTimeline = simpleExoPlayer.getCurrentTimeline();
+        final int currentWindowIndex = simpleExoPlayer.getCurrentWindowIndex();
+        if (currentTimeline.isEmpty() || currentWindowIndex < 0 ||
+                currentWindowIndex >= currentTimeline.getWindowCount()) {
+            return false;
+        }
+
+        Timeline.Window timelineWindow = new Timeline.Window();
+        currentTimeline.getWindow(currentWindowIndex, timelineWindow);
+        return timelineWindow.getDefaultPositionMs() <= simpleExoPlayer.getCurrentPosition();
+    }
+
     public boolean isPlaying() {
         final int state = simpleExoPlayer.getPlaybackState();
         return (state == Player.STATE_READY || state == Player.STATE_BUFFERING)

app/src/main/java/org/schabi/newpipe/player/MainVideoPlayer.java

@@ -19,7 +19,6 @@
 
 package org.schabi.newpipe.player;
 
-import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -33,6 +32,7 @@ import android.preference.PreferenceManager;
 import android.provider.Settings;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.helper.ItemTouchHelper;
 import android.util.DisplayMetrics;
@@ -49,6 +49,7 @@ import android.widget.SeekBar;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.SubtitleView;
@@ -57,6 +58,7 @@ import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.fragments.OnScrollBelowItemsListener;
+import org.schabi.newpipe.player.helper.PlaybackParameterDialog;
 import org.schabi.newpipe.player.helper.PlayerHelper;
 import org.schabi.newpipe.playlist.PlayQueue;
 import org.schabi.newpipe.playlist.PlayQueueItem;
@@ -87,7 +89,8 @@ import static org.schabi.newpipe.util.StateSaver.KEY_SAVED_STATE;
  *
  * @author mauriciocolli
  */
-public final class MainVideoPlayer extends Activity implements StateSaver.WriteRead {
+public final class MainVideoPlayer extends AppCompatActivity
+        implements StateSaver.WriteRead, PlaybackParameterDialog.Callback {
     private static final String TAG = ".MainVideoPlayer";
     private static final boolean DEBUG = BasePlayer.DEBUG;
 
@@ -340,6 +343,15 @@ public final class MainVideoPlayer extends Activity implements StateSaver.WriteR
         }
     }
 
+    ////////////////////////////////////////////////////////////////////////////
+    // Playback Parameters Listener
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onPlaybackParameterChanged(float playbackTempo, float playbackPitch) {
+        if (playerImpl != null) playerImpl.setPlaybackParameters(playbackTempo, playbackPitch);
+    }
+
     ///////////////////////////////////////////////////////////////////////////
 
     @SuppressWarnings({"unused", "WeakerAccess"})
@@ -630,6 +642,12 @@ public final class MainVideoPlayer extends Activity implements StateSaver.WriteR
             showControlsThenHide();
         }
 
+        @Override
+        public void onPlaybackSpeedClicked() {
+            PlaybackParameterDialog.newInstance(getPlaybackSpeed(), getPlaybackPitch())
+                    .show(getSupportFragmentManager(), TAG);
+        }
+
         @Override
         public void onStopTrackingTouch(SeekBar seekBar) {
             super.onStopTrackingTouch(seekBar);

app/src/main/java/org/schabi/newpipe/player/ServicePlayerActivity.java

@@ -31,6 +31,7 @@ import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.fragments.OnScrollBelowItemsListener;
 import org.schabi.newpipe.fragments.local.dialog.PlaylistAppendDialog;
 import org.schabi.newpipe.player.event.PlayerEventListener;
+import org.schabi.newpipe.player.helper.PlaybackParameterDialog;
 import org.schabi.newpipe.playlist.PlayQueueItem;
 import org.schabi.newpipe.playlist.PlayQueueItemBuilder;
 import org.schabi.newpipe.playlist.PlayQueueItemHolder;
@@ -43,7 +44,8 @@ import static org.schabi.newpipe.player.helper.PlayerHelper.formatPitch;
 import static org.schabi.newpipe.player.helper.PlayerHelper.formatSpeed;
 
 public abstract class ServicePlayerActivity extends AppCompatActivity
-        implements PlayerEventListener, SeekBar.OnSeekBarChangeListener, View.OnClickListener {
+        implements PlayerEventListener, SeekBar.OnSeekBarChangeListener,
+        View.OnClickListener, PlaybackParameterDialog.Callback {
 
     private boolean serviceBound;
     private ServiceConnection serviceConnection;
@@ -57,8 +59,6 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     ////////////////////////////////////////////////////////////////////////////
 
     private static final int RECYCLER_ITEM_POPUP_MENU_GROUP_ID = 47;
-    private static final int PLAYBACK_SPEED_POPUP_MENU_GROUP_ID = 61;
-    private static final int PLAYBACK_PITCH_POPUP_MENU_GROUP_ID = 97;
 
     private static final int SMOOTH_SCROLL_MAXIMUM_DISTANCE = 80;
 
@@ -85,9 +85,7 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
     private ProgressBar progressBar;
 
     private TextView playbackSpeedButton;
-    private PopupMenu playbackSpeedPopupMenu;
     private TextView playbackPitchButton;
-    private PopupMenu playbackPitchPopupMenu;
 
     ////////////////////////////////////////////////////////////////////////////
     // Abstracts
@@ -317,45 +315,6 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
         shuffleButton.setOnClickListener(this);
         playbackSpeedButton.setOnClickListener(this);
         playbackPitchButton.setOnClickListener(this);
-
-        playbackSpeedPopupMenu = new PopupMenu(this, playbackSpeedButton);
-        playbackPitchPopupMenu = new PopupMenu(this, playbackPitchButton);
-        buildPlaybackSpeedMenu();
-        buildPlaybackPitchMenu();
-    }
-
-    private void buildPlaybackSpeedMenu() {
-        if (playbackSpeedPopupMenu == null) return;
-
-        playbackSpeedPopupMenu.getMenu().removeGroup(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID);
-        for (int i = 0; i < BasePlayer.PLAYBACK_SPEEDS.length; i++) {
-            final float playbackSpeed = BasePlayer.PLAYBACK_SPEEDS[i];
-            final String formattedSpeed = formatSpeed(playbackSpeed);
-            final MenuItem item = playbackSpeedPopupMenu.getMenu().add(PLAYBACK_SPEED_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedSpeed);
-            item.setOnMenuItemClickListener(menuItem -> {
-                if (player == null) return false;
-
-                player.setPlaybackSpeed(playbackSpeed);
-                return true;
-            });
-        }
-    }
-
-    private void buildPlaybackPitchMenu() {
-        if (playbackPitchPopupMenu == null) return;
-
-        playbackPitchPopupMenu.getMenu().removeGroup(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID);
-        for (int i = 0; i < BasePlayer.PLAYBACK_PITCHES.length; i++) {
-            final float playbackPitch = BasePlayer.PLAYBACK_PITCHES[i];
-            final String formattedPitch = formatPitch(playbackPitch);
-            final MenuItem item = playbackPitchPopupMenu.getMenu().add(PLAYBACK_PITCH_POPUP_MENU_GROUP_ID, i, Menu.NONE, formattedPitch);
-            item.setOnMenuItemClickListener(menuItem -> {
-                if (player == null) return false;
-
-                player.setPlaybackPitch(playbackPitch);
-                return true;
-            });
-        }
     }
 
     private void buildItemPopupMenu(final PlayQueueItem item, final View view) {
@@ -474,10 +433,12 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             player.onShuffleClicked();
 
         } else if (view.getId() == playbackSpeedButton.getId()) {
-            playbackSpeedPopupMenu.show();
+            PlaybackParameterDialog.newInstance(player.getPlaybackSpeed(),
+                    player.getPlaybackPitch()).show(getSupportFragmentManager(), getTag());
 
         } else if (view.getId() == playbackPitchButton.getId()) {
-            playbackPitchPopupMenu.show();
+            PlaybackParameterDialog.newInstance(player.getPlaybackSpeed(),
+                    player.getPlaybackPitch()).show(getSupportFragmentManager(), getTag());
 
         } else if (view.getId() == metadata.getId()) {
             scrollToSelected();
@@ -488,6 +449,15 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
         }
     }
 
+    ////////////////////////////////////////////////////////////////////////////
+    // Playback Parameters Listener
+    ////////////////////////////////////////////////////////////////////////////
+
+    @Override
+    public void onPlaybackParameterChanged(float playbackTempo, float playbackPitch) {
+        if (player != null) player.setPlaybackParameters(playbackTempo, playbackPitch);
+    }
+
     ////////////////////////////////////////////////////////////////////////////
     // Seekbar Listener
     ////////////////////////////////////////////////////////////////////////////
@@ -539,6 +509,10 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             progressSeekBar.setProgress(currentProgress);
             progressCurrentTime.setText(Localization.getDurationString(currentProgress / 1000));
         }
+
+        if (player != null) {
+            progressLiveSync.setClickable(!player.isLiveEdge());
+        }
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/player/VideoPlayer.java

@@ -49,6 +49,7 @@ import android.widget.TextView;
 
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.Format;
+import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.MergingMediaSource;
@@ -523,6 +524,12 @@ public abstract class VideoPlayer extends BasePlayer
         onTextTrackUpdate();
     }
 
+    @Override
+    public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
+        super.onPlaybackParametersChanged(playbackParameters);
+        playbackSpeedTextView.setText(formatSpeed(playbackParameters.speed));
+    }
+
     @Override
     public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {
         if (DEBUG) {
@@ -615,6 +622,7 @@ public abstract class VideoPlayer extends BasePlayer
         if (DEBUG && bufferPercent % 20 == 0) { //Limit log
             Log.d(TAG, "updateProgress() called with: isVisible = " + isControlsVisible() + ", currentProgress = [" + currentProgress + "], duration = [" + duration + "], bufferPercent = [" + bufferPercent + "]");
         }
+        playbackLiveSync.setClickable(!isLiveEdge());
     }
 
     @Override
@@ -718,7 +726,7 @@ public abstract class VideoPlayer extends BasePlayer
         wasPlaying = simpleExoPlayer.getPlayWhenReady();
     }
 
-    private void onPlaybackSpeedClicked() {
+    public void onPlaybackSpeedClicked() {
         if (DEBUG) Log.d(TAG, "onPlaybackSpeedClicked() called");
         playbackSpeedPopupMenu.show();
         isSomePopupMenuVisible = true;

app/src/main/java/org/schabi/newpipe/player/helper/PlaybackParameterDialog.java

@@ -0,0 +1,348 @@
+package org.schabi.newpipe.player.helper;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.DialogFragment;
+import android.support.v7.app.AlertDialog;
+import android.util.Log;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.SeekBar;
+import android.widget.TextView;
+
+import org.schabi.newpipe.R;
+
+import static org.schabi.newpipe.player.BasePlayer.DEBUG;
+
+public class PlaybackParameterDialog extends DialogFragment {
+    private static final String TAG = "PlaybackParameterDialog";
+
+    public static final float MINIMUM_PLAYBACK_VALUE = 0.25f;
+    public static final float MAXIMUM_PLAYBACK_VALUE = 3.00f;
+
+    public static final String STEP_UP_SIGN = "+";
+    public static final String STEP_DOWN_SIGN = "-";
+    public static final float PLAYBACK_STEP_VALUE = 0.05f;
+
+    public static final float NIGHTCORE_TEMPO = 1.20f;
+    public static final float NIGHTCORE_PITCH_LOWER = 1.15f;
+    public static final float NIGHTCORE_PITCH_UPPER = 1.25f;
+
+    public static final float DEFAULT_TEMPO = 1.00f;
+    public static final float DEFAULT_PITCH = 1.00f;
+
+    private static final String INITIAL_TEMPO_KEY = "initial_tempo_key";
+    private static final String INITIAL_PITCH_KEY = "initial_pitch_key";
+
+    public interface Callback {
+        void onPlaybackParameterChanged(final float playbackTempo, final float playbackPitch);
+    }
+
+    private Callback callback;
+
+    private float initialTempo = DEFAULT_TEMPO;
+    private float initialPitch = DEFAULT_PITCH;
+
+    private SeekBar tempoSlider;
+    private TextView tempoMinimumText;
+    private TextView tempoMaximumText;
+    private TextView tempoCurrentText;
+    private TextView tempoStepDownText;
+    private TextView tempoStepUpText;
+
+    private SeekBar pitchSlider;
+    private TextView pitchMinimumText;
+    private TextView pitchMaximumText;
+    private TextView pitchCurrentText;
+    private TextView pitchStepDownText;
+    private TextView pitchStepUpText;
+
+    private CheckBox unhookingCheckbox;
+
+    private TextView nightCorePresetText;
+    private TextView resetPresetText;
+
+    public static PlaybackParameterDialog newInstance(final float playbackTempo,
+                                                      final float playbackPitch) {
+        PlaybackParameterDialog dialog = new PlaybackParameterDialog();
+        dialog.initialTempo = playbackTempo;
+        dialog.initialPitch = playbackPitch;
+        return dialog;
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Lifecycle
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        if (context != null && context instanceof Callback) {
+            callback = (Callback) context;
+        } else {
+            dismiss();
+        }
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (savedInstanceState != null) {
+            initialTempo = savedInstanceState.getFloat(INITIAL_TEMPO_KEY, DEFAULT_TEMPO);
+            initialPitch = savedInstanceState.getFloat(INITIAL_PITCH_KEY, DEFAULT_PITCH);
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putFloat(INITIAL_TEMPO_KEY, initialTempo);
+        outState.putFloat(INITIAL_PITCH_KEY, initialPitch);
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Dialog
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        final View view = View.inflate(getContext(), R.layout.dialog_playback_parameter, null);
+        setupView(view);
+
+        final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(requireActivity())
+                .setTitle(R.string.playback_speed_control)
+                .setView(view)
+                .setCancelable(true)
+                .setNegativeButton(R.string.cancel, (dialogInterface, i) ->
+                        setPlaybackParameters(initialTempo, initialPitch))
+                .setPositiveButton(R.string.finish, (dialogInterface, i) ->
+                        setPlaybackParameters(getCurrentTempo(), getCurrentPitch()));
+
+        return dialogBuilder.create();
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Dialog Builder
+    //////////////////////////////////////////////////////////////////////////*/
+
+    private void setupView(@NonNull View rootView) {
+        setupHookingControl(rootView);
+        setupTempoControl(rootView);
+        setupPitchControl(rootView);
+        setupPresetControl(rootView);
+    }
+
+    private void setupTempoControl(@NonNull View rootView) {
+        tempoSlider = rootView.findViewById(R.id.tempoSeekbar);
+        tempoMinimumText = rootView.findViewById(R.id.tempoMinimumText);
+        tempoMaximumText = rootView.findViewById(R.id.tempoMaximumText);
+        tempoCurrentText = rootView.findViewById(R.id.tempoCurrentText);
+        tempoStepUpText = rootView.findViewById(R.id.tempoStepUp);
+        tempoStepDownText = rootView.findViewById(R.id.tempoStepDown);
+
+        tempoCurrentText.setText(PlayerHelper.formatSpeed(initialTempo));
+        tempoMaximumText.setText(PlayerHelper.formatSpeed(MAXIMUM_PLAYBACK_VALUE));
+        tempoMinimumText.setText(PlayerHelper.formatSpeed(MINIMUM_PLAYBACK_VALUE));
+
+        tempoStepUpText.setText(getStepUpPercentString(PLAYBACK_STEP_VALUE));
+        tempoStepUpText.setOnClickListener(view ->
+                setTempo(getCurrentTempo() + PLAYBACK_STEP_VALUE));
+
+        tempoStepDownText.setText(getStepDownPercentString(PLAYBACK_STEP_VALUE));
+        tempoStepDownText.setOnClickListener(view ->
+                setTempo(getCurrentTempo() - PLAYBACK_STEP_VALUE));
+
+        tempoSlider.setMax(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, MAXIMUM_PLAYBACK_VALUE));
+        tempoSlider.setProgress(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, initialTempo));
+        tempoSlider.setOnSeekBarChangeListener(getOnTempoChangedListener());
+    }
+    
+    private SeekBar.OnSeekBarChangeListener getOnTempoChangedListener() {
+        return new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                final float currentTempo = getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, progress);
+                if (fromUser) { // this change is first in chain
+                    setTempo(currentTempo);
+                } else {
+                    setPlaybackParameters(currentTempo, getCurrentPitch());
+                }
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+                // Do Nothing.
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                // Do Nothing.
+            }
+        };
+    }
+
+    private void setupPitchControl(@NonNull View rootView) {
+        pitchSlider = rootView.findViewById(R.id.pitchSeekbar);
+        pitchMinimumText = rootView.findViewById(R.id.pitchMinimumText);
+        pitchMaximumText = rootView.findViewById(R.id.pitchMaximumText);
+        pitchCurrentText = rootView.findViewById(R.id.pitchCurrentText);
+        pitchStepDownText = rootView.findViewById(R.id.pitchStepDown);
+        pitchStepUpText = rootView.findViewById(R.id.pitchStepUp);
+
+        pitchCurrentText.setText(PlayerHelper.formatPitch(initialPitch));
+        pitchMaximumText.setText(PlayerHelper.formatPitch(MAXIMUM_PLAYBACK_VALUE));
+        pitchMinimumText.setText(PlayerHelper.formatPitch(MINIMUM_PLAYBACK_VALUE));
+
+        pitchStepUpText.setText(getStepUpPercentString(PLAYBACK_STEP_VALUE));
+        pitchStepUpText.setOnClickListener(view ->
+                setPitch(getCurrentPitch() + PLAYBACK_STEP_VALUE));
+
+        pitchStepDownText.setText(getStepDownPercentString(PLAYBACK_STEP_VALUE));
+        pitchStepDownText.setOnClickListener(view ->
+                setPitch(getCurrentPitch() - PLAYBACK_STEP_VALUE));
+
+        pitchSlider.setMax(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, MAXIMUM_PLAYBACK_VALUE));
+        pitchSlider.setProgress(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, initialPitch));
+        pitchSlider.setOnSeekBarChangeListener(getOnPitchChangedListener());
+    }
+
+    private SeekBar.OnSeekBarChangeListener getOnPitchChangedListener() {
+        return new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                final float currentPitch = getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, progress);
+                if (fromUser) { // this change is first in chain
+                    setPitch(currentPitch);
+                } else {
+                    setPlaybackParameters(getCurrentTempo(), currentPitch);
+                }
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+                // Do Nothing.
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                // Do Nothing.
+            }
+        };
+    }
+
+    private void setupHookingControl(@NonNull View rootView) {
+        unhookingCheckbox = rootView.findViewById(R.id.unhookCheckbox);
+        unhookingCheckbox.setOnCheckedChangeListener((compoundButton, isChecked) -> {
+            if (isChecked) return;
+            // When unchecked, slide back to the minimum of current tempo or pitch
+            final float minimum = Math.min(getCurrentPitch(), getCurrentTempo());
+            setSliders(minimum);
+        });
+    }
+
+    private void setupPresetControl(@NonNull View rootView) {
+        nightCorePresetText = rootView.findViewById(R.id.presetNightcore);
+        nightCorePresetText.setOnClickListener(view -> {
+            final float randomPitch = NIGHTCORE_PITCH_LOWER +
+                    (float) Math.random() * (NIGHTCORE_PITCH_UPPER - NIGHTCORE_PITCH_LOWER);
+
+            setTempoSlider(NIGHTCORE_TEMPO);
+            setPitchSlider(randomPitch);
+        });
+
+        resetPresetText = rootView.findViewById(R.id.presetReset);
+        resetPresetText.setOnClickListener(view -> {
+            setTempoSlider(DEFAULT_TEMPO);
+            setPitchSlider(DEFAULT_PITCH);
+        });
+    }
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Helper
+    //////////////////////////////////////////////////////////////////////////*/
+
+    private void setTempo(final float newTempo) {
+        if (unhookingCheckbox == null) return;
+        if (!unhookingCheckbox.isChecked()) {
+            setSliders(newTempo);
+        } else {
+            setTempoSlider(newTempo);
+        }
+    }
+
+    private void setPitch(final float newPitch) {
+        if (unhookingCheckbox == null) return;
+        if (!unhookingCheckbox.isChecked()) {
+            setSliders(newPitch);
+        } else {
+            setPitchSlider(newPitch);
+        }
+    }
+
+    private void setSliders(final float newValue) {
+        setTempoSlider(newValue);
+        setPitchSlider(newValue);
+    }
+
+    private void setTempoSlider(final float newTempo) {
+        if (tempoSlider == null) return;
+        // seekbar doesn't register progress if it is the same as the existing progress
+        tempoSlider.setProgress(Integer.MAX_VALUE);
+        tempoSlider.setProgress(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, newTempo));
+    }
+
+    private void setPitchSlider(final float newPitch) {
+        if (pitchSlider == null) return;
+        pitchSlider.setProgress(Integer.MAX_VALUE);
+        pitchSlider.setProgress(getSliderEquivalent(MINIMUM_PLAYBACK_VALUE, newPitch));
+    }
+
+    private void setPlaybackParameters(final float tempo, final float pitch) {
+        if (callback != null && tempoCurrentText != null && pitchCurrentText != null) {
+            if (DEBUG) Log.d(TAG, "Setting playback parameters to " +
+                    "tempo=[" + tempo + "], " +
+                    "pitch=[" + pitch + "]");
+
+            tempoCurrentText.setText(PlayerHelper.formatSpeed(tempo));
+            pitchCurrentText.setText(PlayerHelper.formatPitch(pitch));
+            callback.onPlaybackParameterChanged(tempo, pitch);
+        }
+    }
+
+    private float getCurrentTempo() {
+        return tempoSlider == null ? initialTempo : getSliderEquivalent(MINIMUM_PLAYBACK_VALUE,
+                tempoSlider.getProgress());
+    }
+
+    private float getCurrentPitch() {
+        return pitchSlider == null ? initialPitch : getSliderEquivalent(MINIMUM_PLAYBACK_VALUE,
+                pitchSlider.getProgress());
+    }
+
+    /**
+     * Converts from zeroed float with a minimum offset to the nearest rounded slider
+     * equivalent integer
+     * */
+    private static int getSliderEquivalent(final float minimumValue, final float floatValue) {
+        return Math.round((floatValue - minimumValue) * 100f);
+    }
+
+    /**
+     * Converts from slider integer value to an equivalent float value with a given minimum offset
+     * */
+    private static float getSliderEquivalent(final float minimumValue, final int intValue) {
+        return ((float) intValue) / 100f + minimumValue;
+    }
+
+    private static String getStepUpPercentString(final float percent) {
+        return STEP_UP_SIGN + PlayerHelper.formatPitch(percent);
+    }
+
+    private static String getStepDownPercentString(final float percent) {
+        return STEP_DOWN_SIGN + PlayerHelper.formatPitch(percent);
+    }
+}

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

@@ -0,0 +1,313 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:clickable="false"
+    android:paddingLeft="@dimen/video_item_search_padding"
+    android:paddingRight="@dimen/video_item_search_padding"
+    android:paddingTop="@dimen/video_item_search_padding">
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:scrollbars="vertical"
+        android:scrollbarAlwaysDrawVerticalTrack="true">
+
+        <!-- START HERE -->
+        <TextView
+            android:id="@+id/tempoControlText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:layout_centerHorizontal="true"
+            android:text="@string/playback_tempo"
+            android:textStyle="bold"
+            android:textColor="?attr/colorAccent"
+            android:layout_alignParentTop="true"/>
+
+        <RelativeLayout
+            android:id="@+id/tempoControl"
+            android:layout_width="match_parent"
+            android:layout_height="40dp"
+            android:orientation="horizontal"
+            android:layout_marginTop="4dp"
+            android:layout_below="@id/tempoControlText">
+
+            <TextView
+                android:id="@+id/tempoStepDown"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:gravity="center"
+                android:layout_centerVertical="true"
+                android:clickable="true"
+                android:focusable="true"
+                android:text="--%"
+                android:textStyle="bold"
+                android:textColor="?attr/colorAccent"
+                android:background="?attr/selectableItemBackground"
+                android:layout_alignParentLeft="true"
+                android:layout_alignParentStart="true"
+                tools:ignore="HardcodedText"
+                tools:text="-5%"/>
+
+            <RelativeLayout
+                android:id="@+id/tempoDisplay"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal"
+                android:layout_marginLeft="4dp"
+                android:layout_marginRight="4dp"
+                android:layout_toRightOf="@id/tempoStepDown"
+                android:layout_toEndOf="@id/tempoStepDown"
+                android:layout_toLeftOf="@id/tempoStepUp"
+                android:layout_toStartOf="@id/tempoStepUp">
+
+                <TextView
+                    android:id="@+id/tempoMinimumText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="-.--x"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_alignParentLeft="true"
+                    android:layout_alignParentStart="true"
+                    android:layout_marginLeft="4dp"
+                    android:layout_marginStart="4dp"
+                    tools:ignore="HardcodedText"
+                    tools:text="1.00x"/>
+
+                <TextView
+                    android:id="@+id/tempoCurrentText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="---%"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_centerHorizontal="true"
+                    android:textStyle="bold"
+                    tools:ignore="HardcodedText"
+                    tools:text="100%"/>
+
+                <TextView
+                    android:id="@+id/tempoMaximumText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="---%"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_alignParentRight="true"
+                    android:layout_alignParentEnd="true"
+                    android:layout_marginRight="4dp"
+                    android:layout_marginEnd="4dp"
+                    tools:ignore="HardcodedText"
+                    tools:text="300%"/>
+
+                <android.support.v7.widget.AppCompatSeekBar
+                    android:id="@+id/tempoSeekbar"
+                    style="@style/Widget.AppCompat.SeekBar"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_below="@id/tempoCurrentText"
+                    android:paddingBottom="4dp"
+                    tools:progress="50"/>
+            </RelativeLayout>
+
+            <TextView
+                android:id="@+id/tempoStepUp"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:gravity="center"
+                android:clickable="true"
+                android:focusable="true"
+                android:text="+-%"
+                android:textStyle="bold"
+                android:textColor="?attr/colorAccent"
+                android:background="?attr/selectableItemBackground"
+                android:layout_centerVertical="true"
+                android:layout_alignParentRight="true"
+                android:layout_alignParentEnd="true"
+                android:layout_marginRight="4dp"
+                android:layout_marginEnd="4dp"
+                tools:ignore="HardcodedText"
+                tools:text="+5%"/>
+        </RelativeLayout>
+
+        <View
+            android:id="@+id/separatorPitch"
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:layout_below="@id/tempoControl"
+            android:layout_margin="@dimen/video_item_search_padding"
+            android:background="?attr/separator_color"/>
+
+        <TextView
+            android:id="@+id/pitchControlText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:layout_centerHorizontal="true"
+            android:text="@string/playback_pitch"
+            android:textStyle="bold"
+            android:textColor="?attr/colorAccent"
+            android:layout_below="@id/separatorPitch"/>
+
+        <RelativeLayout
+            android:id="@+id/pitchControl"
+            android:layout_width="match_parent"
+            android:layout_height="40dp"
+            android:orientation="horizontal"
+            android:layout_marginTop="4dp"
+            android:layout_below="@id/pitchControlText">
+
+            <TextView
+                android:id="@+id/pitchStepDown"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:gravity="center"
+                android:layout_centerVertical="true"
+                android:clickable="true"
+                android:focusable="true"
+                android:text="--%"
+                android:textStyle="bold"
+                android:textColor="?attr/colorAccent"
+                android:background="?attr/selectableItemBackground"
+                android:layout_alignParentLeft="true"
+                android:layout_alignParentStart="true"
+                tools:ignore="HardcodedText"
+                tools:text="-5%"/>
+
+            <RelativeLayout
+                android:id="@+id/pitchDisplay"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:orientation="horizontal"
+                android:layout_marginLeft="4dp"
+                android:layout_marginRight="4dp"
+                android:layout_toRightOf="@+id/pitchStepDown"
+                android:layout_toEndOf="@+id/pitchStepDown"
+                android:layout_toLeftOf="@+id/pitchStepUp"
+                android:layout_toStartOf="@+id/pitchStepUp">
+
+                <TextView
+                    android:id="@+id/pitchMinimumText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="---%"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_alignParentLeft="true"
+                    android:layout_alignParentStart="true"
+                    android:layout_marginLeft="4dp"
+                    android:layout_marginStart="4dp"
+                    tools:ignore="HardcodedText"
+                    tools:text="25%"/>
+
+                <TextView
+                    android:id="@+id/pitchCurrentText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="---%"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_centerHorizontal="true"
+                    android:textStyle="bold"
+                    tools:ignore="HardcodedText"
+                    tools:text="100%"/>
+
+                <TextView
+                    android:id="@+id/pitchMaximumText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center"
+                    android:text="---%"
+                    android:textColor="?attr/colorAccent"
+                    android:layout_alignParentRight="true"
+                    android:layout_alignParentEnd="true"
+                    android:layout_marginRight="4dp"
+                    android:layout_marginEnd="4dp"
+                    tools:ignore="HardcodedText"
+                    tools:text="300%"/>
+
+                <android.support.v7.widget.AppCompatSeekBar
+                    android:id="@+id/pitchSeekbar"
+                    style="@style/Widget.AppCompat.SeekBar"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_below="@+id/pitchCurrentText"
+                    android:paddingBottom="4dp"
+                    tools:progress="50"/>
+            </RelativeLayout>
+
+            <TextView
+                android:id="@+id/pitchStepUp"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:gravity="center"
+                android:clickable="true"
+                android:focusable="true"
+                android:text="+-%"
+                android:textStyle="bold"
+                android:textColor="?attr/colorAccent"
+                android:background="?attr/selectableItemBackground"
+                android:layout_centerVertical="true"
+                android:layout_alignParentRight="true"
+                android:layout_alignParentEnd="true"
+                android:layout_marginRight="4dp"
+                android:layout_marginEnd="4dp"
+                tools:ignore="HardcodedText"
+                tools:text="+5%"/>
+        </RelativeLayout>
+
+        <View
+            android:id="@+id/separatorCheckbox"
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:layout_below="@+id/pitchControl"
+            android:layout_margin="@dimen/video_item_search_padding"
+            android:background="?attr/separator_color"/>
+
+        <CheckBox
+            android:id="@+id/unhookCheckbox"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:checked="false"
+            android:clickable="true"
+            android:focusable="true"
+            android:text="@string/unhook_checkbox"
+            android:maxLines="1"
+            android:layout_centerHorizontal="true"
+            android:layout_below="@id/separatorCheckbox"/>
+
+        <LinearLayout
+            android:id="@+id/presetSelector"
+            android:layout_width="match_parent"
+            android:layout_height="40dp"
+            android:orientation="horizontal"
+            android:layout_below="@id/unhookCheckbox">
+
+            <TextView
+                android:id="@+id/presetNightcore"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:gravity="center"
+                android:text="@string/playback_nightcore"
+                android:background="?attr/selectableItemBackground"
+                android:textColor="?attr/colorAccent"/>
+
+            <TextView
+                android:id="@+id/presetReset"
+                android:layout_width="0dp"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:gravity="center"
+                android:text="@string/playback_default"
+                android:background="?attr/selectableItemBackground"
+                android:textColor="?attr/colorAccent"/>
+        </LinearLayout>
+
+        <!-- END HERE -->
+
+    </RelativeLayout>
+</ScrollView>

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

@@ -456,4 +456,12 @@
     <string name="import_soundcloud_instructions_hint">yourid, soundcloud.com/yourid</string>
 
     <string name="import_network_expensive_warning">Keep in mind that this operation can be network expensive.\n\nDo you want to continue?</string>
+
+    <!-- Playback Parameters -->
+    <string name="playback_speed_control">Playback Speed Control</string>
+    <string name="playback_tempo">Tempo</string>
+    <string name="playback_pitch">Pitch</string>
+    <string name="unhook_checkbox">Unhook (may cause distortion)</string>
+    <string name="playback_nightcore">Nightcore</string>
+    <string name="playback_default">Default</string>
 </resources>