diff --git a/common/src/main/java/ctbrec/sites/cam4/Cam4Model.java b/common/src/main/java/ctbrec/sites/cam4/Cam4Model.java
index 299ea1df..4287b596 100644
--- a/common/src/main/java/ctbrec/sites/cam4/Cam4Model.java
+++ b/common/src/main/java/ctbrec/sites/cam4/Cam4Model.java
@@ -25,6 +25,7 @@ import com.iheartradio.m3u8.PlaylistParser;
 import com.iheartradio.m3u8.data.MasterPlaylist;
 import com.iheartradio.m3u8.data.Playlist;
 import com.iheartradio.m3u8.data.PlaylistData;
+import com.iheartradio.m3u8.data.StreamInfo;
 
 import ctbrec.AbstractModel;
 import ctbrec.Config;
@@ -38,31 +39,31 @@ import okhttp3.Response;
 
 public class Cam4Model extends AbstractModel {
 
-    private static final transient Logger LOG = LoggerFactory.getLogger(Cam4Model.class);
+    private static final Logger LOG = LoggerFactory.getLogger(Cam4Model.class);
     private String playlistUrl;
     private int[] resolution = null;
     private boolean privateRoom = false;
 
     @Override
     public boolean isOnline(boolean ignoreCache) throws IOException, ExecutionException, InterruptedException {
-        if(ignoreCache || onlineState == UNKNOWN) {
+        if (ignoreCache || onlineState == UNKNOWN) {
             try {
                 loadModelDetails();
             } catch (ModelDetailsEmptyException e) {
                 return false;
             }
         }
-        return onlineState == ONLINE && !privateRoom;
+        return onlineState == ONLINE && !privateRoom && playlistUrl != null && !playlistUrl.isEmpty();
     }
 
     private void loadModelDetails() throws IOException, ModelDetailsEmptyException {
         String url = site.getBaseUrl() + "/getBroadcasting?usernames=" + getName();
         LOG.trace("Loading model details {}", url);
         Request req = new Request.Builder().url(url).build();
-        try(Response response = site.getHttpClient().execute(req)) {
-            if(response.isSuccessful()) {
+        try (Response response = site.getHttpClient().execute(req)) {
+            if (response.isSuccessful()) {
                 JSONArray json = new JSONArray(response.body().string());
-                if(json.length() == 0) {
+                if (json.length() == 0) {
                     onlineState = OFFLINE;
                     throw new ModelDetailsEmptyException("Model details are empty");
                 }
@@ -71,13 +72,13 @@ public class Cam4Model extends AbstractModel {
                 setOnlineStateByShowType(showType);
                 playlistUrl = details.getString("hlsPreviewUrl");
                 privateRoom = details.getBoolean("privateRoom");
-                if(privateRoom) {
+                if (privateRoom) {
                     onlineState = PRIVATE;
                 }
-                if(details.has("resolution")) {
+                if (details.has("resolution")) {
                     String res = details.getString("resolution");
                     String[] tokens = res.split(":");
-                    resolution = new int[] {Integer.parseInt(tokens[0]), Integer.parseInt(tokens[1])};
+                    resolution = new int[] { Integer.parseInt(tokens[0]), Integer.parseInt(tokens[1]) };
                 }
             } else {
                 throw new HttpException(response.code(), response.message());
@@ -116,7 +117,7 @@ public class Cam4Model extends AbstractModel {
                 try {
                     loadModelDetails();
                 } catch (ModelDetailsEmptyException e) {
-                    LOG.warn("Couldn't load model details", e.getMessage());
+                    LOG.warn("Couldn't load model details {}", e.getMessage());
                 }
             }
             return onlineState;
@@ -124,9 +125,12 @@ public class Cam4Model extends AbstractModel {
     }
 
     private String getPlaylistUrl() throws IOException {
-        if(playlistUrl == null) {
+        if(playlistUrl == null || playlistUrl.trim().isEmpty()) {
             try {
                 loadModelDetails();
+                if (playlistUrl == null) {
+                    throw new IOException("Couldn't determine playlist url");
+                }
             } catch (ModelDetailsEmptyException e) {
                 throw new IOException(e);
             }
@@ -142,7 +146,7 @@ public class Cam4Model extends AbstractModel {
             if (playlist.hasStreamInfo()) {
                 StreamSource src = new StreamSource();
                 src.bandwidth = playlist.getStreamInfo().getBandwidth();
-                src.height = Optional.ofNullable(playlist.getStreamInfo()).map(si -> si.getResolution()).map(res -> res.height).orElse(0);
+                src.height = Optional.ofNullable(playlist.getStreamInfo()).map(StreamInfo::getResolution).map(res -> res.height).orElse(0);
                 String masterUrl = getPlaylistUrl();
                 String baseUrl = masterUrl.substring(0, masterUrl.lastIndexOf('/') + 1);
                 String segmentUri = baseUrl + playlist.getUri();
@@ -155,7 +159,7 @@ public class Cam4Model extends AbstractModel {
     }
 
     private MasterPlaylist getMasterPlaylist() throws IOException, ParseException, PlaylistException {
-        LOG.trace("Loading master playlist {}", getPlaylistUrl());
+        LOG.debug("Loading master playlist [{}]", getPlaylistUrl());
         Request req = new Request.Builder().url(getPlaylistUrl()).build();
 
         try (Response response = site.getHttpClient().execute(req)) {
@@ -226,14 +230,14 @@ public class Cam4Model extends AbstractModel {
 
         // we have to use a client without any cam4 cookies here, otherwise
         // this request is redirected to the login page. no idea why
-        try(Response response = site.getRecorder().getHttpClient().execute(req)) {
+        try (Response response = site.getRecorder().getHttpClient().execute(req)) {
             String broadCasterId = null;
-            if(response.isSuccessful()) {
+            if (response.isSuccessful()) {
                 String content = response.body().string();
                 try {
                     Element tag = HtmlParser.getTag(content, "input[name=\"broadcasterId\"]");
                     broadCasterId = tag.attr("value");
-                } catch(Exception e) {
+                } catch (Exception e) {
                     LOG.debug(content);
                     throw new IOException(e);
                 }
@@ -250,12 +254,12 @@ public class Cam4Model extends AbstractModel {
                         .post(body)
                         .addHeader("X-Requested-With", "XMLHttpRequest")
                         .build();
-                Response resp = site.getHttpClient().execute(req);
-                if(resp.isSuccessful()) {
-                    return Objects.equals(resp.body().string(), "Ok");
-                } else {
-                    resp.close();
-                    return false;
+                try (Response resp = site.getHttpClient().execute(req)) {
+                    if (resp.isSuccessful()) {
+                        return Objects.equals(resp.body().string(), "Ok");
+                    } else {
+                        return false;
+                    }
                 }
             } else {
                 return false;