encavcodec: fix 2 pass vp8 and vp9 encoding

libvpx only supplies the stats upon the final flush of the encoder.  So
we must also write stats after final flush.

(cherry picked from commit d64dba737d0136b58545be33c50db093df1880c1)

diff --git a/libhb/encavcodec.c b/libhb/encavcodec.c
index 0543fe47c50d9f6e1f86da1f7b7f001d0ceea82f..591aa4f08949f4e908fda34a78c681eb44b1b1e2 100644 (file)
--- a/libhb/encavcodec.c
+++ b/libhb/encavcodec.c
@@ -610,6 +610,15 @@ static void Flush( hb_work_object_t * w, hb_buffer_list_t * list )
     hb_work_private_t * pv = w->private_data;
 
     avcodec_send_frame(pv->context, NULL);
+
+    // Write stats
+    // vpx only writes stats at final flush
+    if (pv->job->pass_id == HB_PASS_ENCODE_1ST &&
+        pv->context->stats_out != NULL)
+    {
+        fprintf( pv->file, "%s", pv->context->stats_out );
+    }
+
     get_packets(w, list);
 }