Use remoteId to properly fetch streaming video url

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

app/src/main/java/com/owncloud/android/ui/helpers/FileOperationsHelper.java

@@ -454,7 +454,7 @@ public class FileOperationsHelper {
         fileActivity.showLoadingDialog(fileActivity.getString(R.string.wait_a_moment));
         final User user = currentAccount.getUser();
         new Thread(() -> {
-            StreamMediaFileOperation sfo = new StreamMediaFileOperation(file.getLocalId());
+            StreamMediaFileOperation sfo = new StreamMediaFileOperation(file.getRemoteId());
             RemoteOperationResult result = sfo.execute(user.toPlatformAccount(), fileActivity);
 
             fileActivity.dismissLoadingDialog();

app/src/main/java/com/owncloud/android/ui/preview/PreviewMediaFragment.java

@@ -494,7 +494,7 @@ public class PreviewMediaFragment extends FileFragment implements OnTouchListene
             playVideoUri(getFile().getStorageUri());
         } else {
             try {
-                new LoadStreamUrl(this, user, clientFactory).execute(getFile().getLocalId());
+                new LoadStreamUrl(this, user, clientFactory).execute(getFile().getRemoteId());
             } catch (Exception e) {
                 Log_OC.e(TAG, "Loading stream url not possible: " + e);
             }