gst_bin_add_many: assertion `GST_IS_ELEMENT (element_1)' failed

[Marlos C. Machado-2]

Hi,

I need to implement this following stream on C++:
filesrc location=Video2.avi ! decodebin2 name=dec ! queue !
ffmpegcolorspace ! autovideosink dec. ! char audio [] = "queue !
audioconvert ! audioresample ! autoaudiosink
       
I've done this simple code:

int main(int argc, char ** argv)
{
        GError *error = NULL;
        GstElement *gstInit, *gstVideo, *gstAudio;
        GstElement *video_stream, *filesrc, *decodebin2, *queue_1, *ffmpegcolorspace;
        GstElement *autovideosink, *queue_2, *audioconvert, *audioresample,
*autoaudiosink;
       
        gst_init(&argc, &argv);

        video_stream = gst_pipeline_new("Video");
       
        filesrc          = gst_element_factory_make("filesrc
location=Video2.avi", "filesrc");
        decodebin2       = gst_element_factory_make("decodebin2 name=dec",
"decodebin2");
        queue_1          = gst_element_factory_make("queue", "queue1");
        ffmpegcolorspace = gst_element_factory_make("ffmpegcolorspace",
"ffmpegcolorspace");
        autovideosink    = gst_element_factory_make("autovideosink dec.",
"autovideosink");
        queue_2          = gst_element_factory_make("queue", "queue2");
        audioconvert     = gst_element_factory_make("audioconvert", "audioconvert");
        audioresample    = gst_element_factory_make("audioresample", "audioresample");
        autoaudiosink    = gst_element_factory_make("autoaudiosink", "autoaudiosink");

        gst_bin_add_many(GST_BIN(video_stream), filesrc, decodebin2, queue_1,
ffmpegcolorspace,
                                     autovideosink, queue_2, audioconvert, audioresample,
autoaudiosink, NULL);

}

It compiles, but when I try to run I get this:
(playVideo:4190): GStreamer-CRITICAL **: gst_bin_add_many: assertion
`GST_IS_ELEMENT (element_1)' failed

What Am I doing wrong?

Thanks in advance.



--
Marlos Cholodovskis Machado

------------------------------------------------------------------------------
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Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
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[Robert Powell-2]

Hi,

On Fri, Oct 22, 2010 at 10:01 AM, Marlos C. Machado <[hidden email]> wrote:

       decodebin2       = gst_element_factory_make("decodebin2 name=dec",
"decodebin2");

I'd bet that decodebin2 is equal to NULL.  The first parameter to gst_element_factory_make should just be "decodebin2"


Hope that helps

------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
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[Marlos C. Machado-2]

If I take off these additional parameters, including the file filesrc
location=Video2.avi it works.

How do I pass as parameter the path to filesrc?

2010/10/22 Robert Powell <[hidden email]>:

> Hi,
>
>
> On Fri, Oct 22, 2010 at 10:01 AM, Marlos C. Machado <[hidden email]>
> wrote:
>>
>>        decodebin2       = gst_element_factory_make("decodebin2 name=dec",
>> "decodebin2");
>
> I'd bet that decodebin2 is equal to NULL.  The first parameter to
> gst_element_factory_make should just be "decodebin2"
>
>
> Hope that helps
>
>
> ------------------------------------------------------------------------------
> Nokia and AT&T present the 2010 Calling All Innovators-North America contest
> Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
> $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
> Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
> http://p.sf.net/sfu/nokia-dev2dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>

--
Marlos Cholodovskis Machado

------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
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[Nathanael D. Noblet]

On 10/22/2010 11:39 AM, Marlos C. Machado wrote:
> If I take off these additional parameters, including the file filesrc
> location=Video2.avi it works.
>
> How do I pass as parameter the path to filesrc?

     g_object_set (G_OBJECT (filesrc), "location", "Video2.avi", NULL);

------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
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[Marlos C. Machado-2]

Thanks a lot! Robert and You helped me a lot!

2010/10/22 Nathanael D. Noblet <[hidden email]>

On 10/22/2010 11:39 AM, Marlos C. Machado wrote:
> If I take off these additional parameters, including the file filesrc
> location=Video2.avi it works.
>
> How do I pass as parameter the path to filesrc?

    g_object_set (G_OBJECT (filesrc), "location", "Video2.avi", NULL);

------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.sourceforge.net/lists/listinfo/gstreamer-devel

--
Marlos Cholodovskis Machado



------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
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[Stefan Sauer]

Am 22.10.2010 21:05, schrieb Marlos C. Machado:

> Thanks a lot! Robert and You helped me a lot!
>
> 2010/10/22 Nathanael D. Noblet <[hidden email] <mailto:[hidden email]>>
>
>     On 10/22/2010 11:39 AM, Marlos C. Machado wrote:
>     > If I take off these additional parameters, including the file filesrc
>     > location=Video2.avi it works.
>     >
>     > How do I pass as parameter the path to filesrc?
>
>         g_object_set (G_OBJECT (filesrc), "location", "Video2.avi", NULL);
>
>     ------------------------------------------------------------------------------
>     Nokia and AT&T present the 2010 Calling All Innovators-North America contest
>     Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
>     $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
>     Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
>     http://p.sf.net/sfu/nokia-dev2dev
>     _______________________________________________
>     gstreamer-devel mailing list
>     [hidden email]
>     <mailto:[hidden email]>
>     https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
> --
> Marlos Cholodovskis Machado
>

Maybe we should have gst_parse_element_from_description() like we have
gst_parse_bin_from_description() as a convinience api for quick tests.

Stefan

------------------------------------------------------------------------------
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for consumers in  U.S. and Canada
$10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing
Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store
http://p.sf.net/sfu/nokia-dev2dev
_______________________________________________
gstreamer-devel mailing list
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