diff --git a/library/src/main/java/com/danikula/videocache/HttpUrlSource.java b/library/src/main/java/com/danikula/videocache/HttpUrlSource.java
index 90599ba..994202c 100644
--- a/library/src/main/java/com/danikula/videocache/HttpUrlSource.java
+++ b/library/src/main/java/com/danikula/videocache/HttpUrlSource.java
@@ -1,13 +1,5 @@
 package com.danikula.videocache;
 
-import android.text.TextUtils;
-
-import com.danikula.videocache.sourcestorage.SourceInfoStorage;
-import com.danikula.videocache.sourcestorage.SourceInfoStorageFactory;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -15,6 +7,12 @@
 import java.net.HttpURLConnection;
 import java.net.URL;
 
+import android.text.TextUtils;
+import com.danikula.videocache.sourcestorage.SourceInfoStorage;
+import com.danikula.videocache.sourcestorage.SourceInfoStorageFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import static com.danikula.videocache.Preconditions.checkNotNull;
 import static com.danikula.videocache.ProxyCacheUtils.DEFAULT_BUFFER_SIZE;
 import static java.net.HttpURLConnection.HTTP_MOVED_PERM;
@@ -125,7 +123,7 @@ private void fetchContentInfo() throws ProxyCacheException {
         HttpURLConnection urlConnection = null;
         InputStream inputStream = null;
         try {
-            urlConnection = openConnection(0, 10000);
+            urlConnection = openConnectionForHeader(10000);
             long length = getContentLength(urlConnection);
             String mime = urlConnection.getContentType();
             inputStream = urlConnection.getInputStream();
@@ -141,7 +139,36 @@ private void fetchContentInfo() throws ProxyCacheException {
             }
         }
     }
-
+    // only get http header information
+    private HttpURLConnection openConnectionForHeader(int timeout) throws IOException, ProxyCacheException {
+        HttpURLConnection connection;
+        boolean redirected;
+        int redirectCount = 0;
+        String url = this.sourceInfo.url;
+        do {
+            LOG.debug("Open connection for header to " + url);
+            connection = (HttpURLConnection) new URL(url).openConnection();
+            if (timeout > 0) {
+                connection.setConnectTimeout(timeout);
+                connection.setReadTimeout(timeout);
+            }
+            //only get HEAD ,not need BODY，to get header faster information
+            connection.setRequestMethod("HEAD");
+            int code = connection.getResponseCode();
+            redirected = code == HTTP_MOVED_PERM || code == HTTP_MOVED_TEMP || code == HTTP_SEE_OTHER;
+            if (redirected) {
+                url = connection.getHeaderField("Location");
+                LOG.debug("Redirect to:" + url);
+                redirectCount++;
+                connection.disconnect();
+                LOG.debug("Redirect closed:" + url);
+            }
+            if (redirectCount > MAX_REDIRECTS) {
+                throw new ProxyCacheException("Too many redirects: " + redirectCount);
+            }
+        } while (redirected);
+        return connection;
+    }
     private HttpURLConnection openConnection(long offset, int timeout) throws IOException, ProxyCacheException {
         HttpURLConnection connection;
         boolean redirected;
diff --git a/library/src/main/java/com/danikula/videocache/file/Files.java b/library/src/main/java/com/danikula/videocache/file/Files.java
index 5f5234a..bf0e333 100644
--- a/library/src/main/java/com/danikula/videocache/file/Files.java
+++ b/library/src/main/java/com/danikula/videocache/file/Files.java
@@ -1,18 +1,17 @@
 package com.danikula.videocache.file;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.File;
 import java.io.IOException;
 import java.io.RandomAccessFile;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
-import java.util.Date;
 import java.util.LinkedList;
 import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * Utils for work with files.
  *
@@ -48,13 +47,13 @@ static List<File> getLruListFiles(File directory) {
     static void setLastModifiedNow(File file) throws IOException {
         if (file.exists()) {
             long now = System.currentTimeMillis();
-            boolean modified = file.setLastModified(now); // on some devices (e.g. Nexus 5) doesn't work
+            boolean modified = file.setLastModified(now/1000*1000); // on some devices (e.g. Nexus 5) doesn't work
             if (!modified) {
                 modify(file);
-                if (file.lastModified() < now) {
-                    // NOTE: apparently this is a known issue (see: http://stackoverflow.com/questions/6633748/file-lastmodified-is-never-what-was-set-with-file-setlastmodified)
-                    LOG.warn("Last modified date {} is not set for file {}", new Date(file.lastModified()), file.getAbsolutePath());
-                }
+                //if (file.lastModified() < now) {
+                //    // NOTE: apparently this is a known issue (see: http://stackoverflow.com/questions/6633748/file-lastmodified-is-never-what-was-set-with-file-setlastmodified)
+                //    LOG.warn("Last modified date {} is not set for file {}", new Date(file.lastModified()), file.getAbsolutePath());
+                //}
             }
         }
     }