data = gst_buffer_map (obuf, NULL, NULL, GST_MAP_WRITE);
gst_buffer_extract (*buf, 0, data, size);
+ /* assume 0 padding, at least makes outcome deterministic */
+ data[size] = 0;
gst_buffer_unmap (obuf, data, size + 1);
gst_buffer_replace (buf, obuf);
}