Difference between revisions of "GstSEIMetadata/Examples/Using Gstd"

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The following is an example of how to insert and receive metadata using gstd and the GstSEI plugin.
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<noinclude>
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Make sure you have gstd [https://developer.ridgerun.com/wiki/index.php?title=GStreamer_Daemon_-_GStreamer_Daemon_Basics gstd].
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{{GstSEIMetadata/Head|previous=Examples/Using gst-launch|next=Examples/C Example|metakeywords=}}
 +
</noinclude>
 +
 
 +
 
 +
 
 +
The following is an example of how to insert metadata and receive a signal using gstd and the GstSEI plugin.
 +
Make sure you have [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 the sender pipeline like this.
 +
<pre>
 +
pipeline_create sender videotestsrc is-live=true ! x264enc ! seimetatester ! seiinject ! rtph264pay ! capsfilter name=cf ! udpsink host=127.0.0.1 port=5000
 +
</pre>
 +
Create the receiver pipeline.
 +
<pre>
 +
pipeline_create receiver udpsrc port=5000 ! capsfilter name=cf ! rtph264depay ! h264parse ! seiextract signal-new-metadata=true name=extract ! fakesink
 +
</pre>
 +
 
 +
Set the appropriate caps.
 +
<pre>
 +
element_set receiver cf caps application/x-rtp,media=video,clock-rate=90000,encoding-name=H264
 +
</pre>
 +
Play the pipelines.
 +
<pre>
 +
pipeline_play sender
 +
pipeline_play receiver
 +
</pre>
 +
Then receive the signal.
 +
<pre>
 +
signal_connect receiver 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>
 +
A similar but slightly shorter example would be the following:
 +
 
 +
Once the daemon is running and the client has started create the following pipelines:
 +
 
 +
Sender:
 +
<pre>
 +
pipeline_create send videotestsrc is-live=true ! x264enc ! seimetatester ! seiinject ! mpegtsmux ! udpsink host=127.0.0.1 port=5000
 +
</pre>
 +
Receiver:
 +
<pre>
 +
pipeline_create receive udpsrc port=5000 ! tsdemux ! h264parse ! seiextract signal-new-metadata=true name=extract ! fakesink
 +
</pre>
 +
Play the pipelines.
 +
<pre>
 +
pipeline_play send
 +
pipeline_play receive
 +
</pre>
 +
Receive the signal.
 +
<pre>
 +
signal_connect receive extract new-metadata
 +
</pre>
 +
As before, 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) 0x7ffb9002fe10)"
 +
        }
 +
    ]
 +
}
 +
}
 +
</syntaxhighlight>
 +
 
 +
<noinclude>
 +
{{GstSEIMetadata/Foot|Examples/Using gst-launch|Examples/C Example}}
 +
</noinclude>

Latest revision as of 12:57, 7 March 2023


Previous: Examples/Using gst-launch Index Next: Examples/C Example


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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.

Now start the daemon 

gstd -e

Start the client 

gstd-client

Create the sender pipeline like this. 

pipeline_create sender videotestsrc is-live=true ! x264enc ! seimetatester ! seiinject ! rtph264pay ! capsfilter name=cf ! udpsink host=127.0.0.1 port=5000

Create the receiver pipeline. 

pipeline_create receiver udpsrc port=5000 ! capsfilter name=cf ! rtph264depay ! h264parse ! seiextract signal-new-metadata=true name=extract ! fakesink

Set the appropriate caps. 

element_set receiver cf caps application/x-rtp,media=video,clock-rate=90000,encoding-name=H264

Play the pipelines. 

pipeline_play sender
pipeline_play receiver

Then receive the signal. 

signal_connect receiver extract new-metadata

The expected output is something similar to this: 

{
  "code" : 0,
  "description" : "Success",
  "response" : {
    "name" : "new-metadata",
    "arguments" : [
        {
            "type" : "GstSeiExtract",
            "value" : "(GstSeiExtract) extract"
        },
        {
            "type" : "guint",
            "value" : 8
        },
        {
            "type" : "gpointer",
            "value" : "((gpointer) 0x7fdb9000fdc0)"
        }
    ]
}
}

A similar but slightly shorter example would be the following:

Once the daemon is running and the client has started create the following pipelines:

Sender: 

pipeline_create send videotestsrc is-live=true ! x264enc ! seimetatester ! seiinject ! mpegtsmux ! udpsink host=127.0.0.1 port=5000

Receiver: 

pipeline_create receive udpsrc port=5000 ! tsdemux ! h264parse ! seiextract signal-new-metadata=true name=extract ! fakesink

Play the pipelines. 

pipeline_play send
pipeline_play receive

Receive the signal. 

signal_connect receive extract new-metadata

As before, the expected output is something similar to this: 

{
  "code" : 0,
  "description" : "Success",
  "response" : {
    "name" : "new-metadata",
    "arguments" : [
        {
            "type" : "GstSeiExtract",
            "value" : "(GstSeiExtract) extract"
        },
        {
            "type" : "guint",
            "value" : 8
        },
        {
            "type" : "gpointer",
            "value" : "((gpointer) 0x7ffb9002fe10)"
        }
    ]
}
}


Previous: Examples/Using gst-launch Index Next: Examples/C Example



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