qtmux: handle 0 size packets without dividing by 0

Coverity 1139691

diff --git a/gst/isomp4/gstqtmux.c b/gst/isomp4/gstqtmux.c
index 52b60c7707199116af1c435d9d337c280ed30d2a..b33904168aa2e34ad01fcadc321b10f52b7d0c90 100644 (file)
--- a/gst/isomp4/gstqtmux.c
+++ b/gst/isomp4/gstqtmux.c
@@ -2387,7 +2387,10 @@ gst_qt_mux_add_buffer (GstQTMux * qtmux, GstQTPad * pad, GstBuffer * buf)
     } else {
       nsamples = gst_buffer_get_size (last_buf) / sample_size;
     }
     } else {
       nsamples = gst_buffer_get_size (last_buf) / sample_size;
     }

-    duration = GST_BUFFER_DURATION (last_buf) / nsamples;
+    if (nsamples > 0)
+      duration = GST_BUFFER_DURATION (last_buf) / nsamples;
+    else
+      duration = 0;

 
     /* timescale = samplerate */
     scaled_duration = 1;
 
     /* timescale = samplerate */
     scaled_duration = 1;