GstSEIMetadata/Examples/Using Gstd: Difference between revisions

GstSEIMetadata/Examples/Using Gstd (view source)

900 bytes added , 2 July 2021

no edit summary

227

edits

@@ Line 5: / Line 5: @@
-The following is an example of how to insert and receive metadata using gstd and the GstSEI plugin.
+The following is an example of how to insert metadata and receive a signal using gstd and the GstSEI plugin.
 Make sure you have gstd [https://developer.ridgerun.com/wiki/index.php?title=GStreamer_Daemon_-_GStreamer_Daemon_Basics gstd].
+Now start the daemon
+<pre>
+gstd -e
+</pre>
+Start the client
+<pre>
+gstd-client
+</pre>
+Create a pipeline like this one.
+<pre>
+pipeline_create p videotestsrc is-live=true ! x264enc ! seimetatester ! seiinject ! seiextract signal-new-metadata=true name=extract ! fakesink
+</pre>
+Play it
+<pre>
+pipeline_play p
+</pre>
+Then receive the signal
+<pre>
+signal_connect p extract new-metadata
+</pre>
+The expected output is something similar to this:
+<syntaxhighlight lang=bash>
+{
+  "code" : 0,
+  "description" : "Success",
+  "response" : {
+    "name" : "new-metadata",
+    "arguments" : [
+        {
+            "type" : "GstSeiExtract",
+            "value" : "(GstSeiExtract) extract"
+        },
+        {
+            "type" : "guint",
+            "value" : 8
+        },
+        {
+            "type" : "gpointer",
+            "value" : "((gpointer) 0x7fdb9000fdc0)"
+        }
+    ]
+}
+}
+</syntaxhighlight>