gst_element_query_position and gst_element_query_duration always returns 0

[deeps8us]

I have a pipeline  : souphttpsrc -> id3demux -> ac3parse -> myaudioSink
In this case, gst_element_query_position and gst_element_query_duration always returns 0.

But  the below pipeline works fine:

neonhttpsrc -> id3demux ->  mp3parse -> myaudioSink.

Below is the function which fails:


    GstFormat fmt = GST_FORMAT_TIME;
    gint64 pos;
    qint64 dur;
    if (gst_element_query_position(GST_ELEMENT(getPipeline()), &fmt, &pos) &&
        gst_element_query_duration(GST_ELEMENT(getPipeline()), &fmt, &dur))
    {
       
    }
    else
    {
        printf("GStreamer: Could not query position and duration\n");
    }


Any suggestions?

[Mandeep Sandhu]

>     GstFormat fmt = GST_FORMAT_TIME;
>     gint64 pos;
>     qint64 dur;
>     if (gst_element_query_position(GST_ELEMENT(getPipeline()), &fmt, &pos)
> &&
>         gst_element_query_duration(GST_ELEMENT(getPipeline()), &fmt, &dur))
>     {
>
>     }
>     else
>     {
>         printf("GStreamer: Could not query position and duration\n");
>     }
>
>
> Any suggestions?

When are you posting this query? Is the pipeline in the playing state?

Did you try using the playbin/uridecode element to decode this media
and then issue position/duration queries on it?

I remember, my manually setup pipeline (on an embedded board) was
giving trouble with these queries. But switching to using playbin
fixed it (maybe I was setting up the pipeline incorrectly, I'm not
sure).

HTH,
-mandeep

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