encodebin: allow more buffers in output queue for better performance

https://bugzilla.gnome.org/show_bug.cgi?id=744191

diff --git a/gst/encoding/gstencodebin.c b/gst/encoding/gstencodebin.c
index 59c19aa..21eb346 100644 (file)
--- a/gst/encoding/gstencodebin.c
+++ b/gst/encoding/gstencodebin.c
@@ -1260,11 +1260,11 @@ _create_stream_group (GstEncodeBin * ebin, GstEncodingProfile * sprof,
   }
 
   /* Output Queue.
-   * We only use a 1buffer long queue here, the actual queueing will be done
-   * in the input queue */
+   * The actual queueing will be done in the input queue, but some queuing
+   * after the encoder can be beneficial for encoding performance. */
   last = sgroup->outqueue = gst_element_factory_make ("queue", NULL);
-  g_object_set (sgroup->outqueue, "max-size-buffers", (guint32) 1,
-      "max-size-bytes", (guint32) 0, "max-size-time", (guint64) 0,
+  g_object_set (sgroup->outqueue, "max-size-buffers", (guint) 0,
+      "max-size-bytes", (guint) 0, "max-size-time", (guint64) 3 * GST_SECOND,
       "silent", TRUE, NULL);
 
   gst_bin_add (GST_BIN (ebin), sgroup->outqueue);