pipeline failure when going from cmdline to app.

[Ashwini Sharma]

Thanks a ton Nathanael.
It worked for me.



On Fri, Mar 11, 2011 at 12:25 PM, Nathanael D. Noblet <nathanael at gnat.ca>wrote:

>  On 03/10/2011 11:15 PM, Ashwini Sharma wrote:
>
>> Hi All,
>>
>> I am trying to play a mp4 file. When I play from command line using the
>> pipe:
>> "gst-launch filesrc location=/home/ashwini/streams/output.ts !
>> mpegtsparse ! mpegtsdemux ! decodebin ! ffmpegcolorspace ! ximagesink"
>>
>> The video is displayed well.
>>  But when i try to achieve the same pipe thru the application, It fails.
>>
>> The code snippet of pipelie creation is as follows:
>>
>> pipeline = gst_pipeline_new ("gst-player");
>> //gst_debug_set_default_threshold(GST_LEVEL_DEBUG);
>> gst_debug_set_threshold_for_name("mpegtsparse",GST_LEVEL_DEBUG);
>>     src = gst_element_factory_make ("filesrc", NULL);
>>     g_assert (src);
>> g_print("URI = %s\n",uri);
>>     g_object_set (G_OBJECT (src), "location", uri, NULL);
>>     parse = gst_element_factory_make ("mpegtsparse", NULL);
>>     g_assert (parse);
>>     demux = gst_element_factory_make ("mpegtsdemux", NULL);
>>     g_assert (demux);
>>     dec = gst_element_factory_make ("decodebin", NULL);
>>     g_assert (dec);
>>     csp = gst_element_factory_make ("ffmpegcolorspace", NULL);
>>     g_assert (csp);
>>     videosink = gst_element_factory_make ("ximagesink", NULL);
>>     g_assert (videosink);
>>
>>     /* Adding elements to the pipeline */
>>     gst_bin_add_many (GST_BIN (pipeline), src, parse, demux, dec, csp,
>> videosink, NULL);
>>     //  gst_bin_add_many (GST_BIN (pipeline), src, videosink, NULL);
>>    // g_assert (gst_element_link_many (src, parse, demux, dec, csp,
>> videosink, NULL));
>>     g_assert (gst_element_link (src, parse));
>>     g_assert (gst_element_link (parse, demux));
>>     gst_element_link (demux, dec);
>>     (gst_element_link (dec, csp));
>>     (gst_element_link (csp, videosink));
>>     if (GST_IS_X_OVERLAY (videosink))
>>     {
>>         gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (videosink),
>> GPOINTER_TO_INT (window));
>>     }
>>
>>     gst_element_set_state (pipeline, GST_STATE_PLAYING);
>>
>> What could be causing it to fail. (In the above snippet described, I
>> have used the gst-player code and modified the pipe to current state)
>>
>> Any help is appreciated.
>>
>
> You need to listen for 'pad-added' signal from the decoder and check the
> gst_element_link() calls for success.
>
>
> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-helloworld.html
>
> --
> Nathanael d. Noblet
> t 403.875.4613
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
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