Crossfade - Resource not found message at runtime
Rossana Guerra
guerra.rossana at gmail.com
Wed Sep 7 13:59:26 PDT 2011
Hi Nicolai, does the crossfade work?.
Actually this is the syntax of the command (from console)
./crossfade file:///video1.avi file:///video2.avi
crossfade : name of the programm
I intended the uri format in several ways (according to URI specification),
though noneone works, the same error. "Resource not found",
file:///video1.avi
file://video1.avi
file:/video1.avi
In the last 2 format the message says, resource for reading not found.
Thanks for your help
Rossana
2011/9/7 Nicolai Hess <nicolaihess at web.de>
> Hi Rossane,
> your code is working for me.
> Remember to use an URI for your input file arguments, example:
>
> nameofyourprogram file://<path_to_file1> file://<path_to_file2>
>
> 2011/9/7 Rossana Guerra <guerra.rossana at gmail.com>
>
>> Hi Angel, the path is correct. In fact I use the same path to another
>> example.
>> Can you please tell me what kind of bug is? I can't realize.
>> Thanks for your response
>>
>>
>> 2011/9/7 Angel Martin <amartin at vicomtech.org>
>>
>>> Dear Rossana,
>>>
>>> I think that this kind of error message is obtained when the video
>>> resource is not found so check the file path to the files and be sure that
>>> the paths are right in the location assignment of each gnlfilesource.
>>>
>>> Moreover, You have a bug in the getAndSetController concerning the
>>> duration of the transition:
>>>
>>> g_value_set_double (&val_double, 1.0);
>>> gst_interpolation_control_source_set(csource,(duracion *
>>> GST_MSECOND),&val_double);
>>>
>>> Best,
>>>
>>> Angel
>>>
>>> 2011/9/7 Rossana Guerra <guerra.rossana at gmail.com>
>>>
>>>> Hi all, I am totally new with GSteamer, so sorry for the lots of
>>>> mistakes I have. I am trying to do the example of this link in C/C++
>>>> http://notes.brooks.nu/gstreamer-video-crossfade-example/
>>>> It's about crossfade. I doing it with .AVI files.
>>>>
>>>> At runtime I got the Resource not found error. Another examples, like a
>>>> playbin, work properly with .AVI's, so I don't think is a codec issue.
>>>> The video files are passing as arguments (uri format).
>>>>
>>>> Thanks in advance.
>>>>
>>>> /////////////////////////
>>>> Heres the code
>>>>
>>>>
>>>> #include <gst.h>
>>>> #include <controller/gstcontroller.h>
>>>>
>>>> #include <iostream>
>>>>
>>>> using namespace std;
>>>>
>>>> // Error handler
>>>> static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data)
>>>> {
>>>> GMainLoop *loop = (GMainLoop *) data;
>>>>
>>>> switch (GST_MESSAGE_TYPE (msg))
>>>> {
>>>> case GST_MESSAGE_EOS:
>>>> g_print ("Final de stream\n");
>>>> g_main_loop_quit (loop);
>>>> break;
>>>> case GST_MESSAGE_ERROR:
>>>> {
>>>> gchar *debug;
>>>> GError *error;
>>>> gst_message_parse_error (msg, &error, &debug);
>>>> g_free (debug);
>>>> g_printerr ("Error: %s\n", error->message);
>>>> g_error_free (error);
>>>> g_main_loop_quit (loop);
>>>> break;
>>>> }
>>>> default:
>>>> break;
>>>> }
>>>> return TRUE;
>>>> }
>>>>
>>>> static void on_pad_added (GstElement *element, GstPad *pad, gpointer
>>>> data)
>>>> {
>>>> GstPad *sinkpad;
>>>> GstElement * queue = (GstElement *) data;
>>>>
>>>> /* We can now link this pad with the vorbis-decoder sink pad */
>>>> g_print ("Dynamic pad created, linking demuxer/decoder\n");
>>>> sinkpad = gst_element_get_static_pad (queue, "sink");
>>>>
>>>> gst_pad_link (pad, sinkpad);
>>>>
>>>> gst_object_unref (sinkpad);
>>>> }
>>>>
>>>> GstElement * getBin(const gchar * nomBin, GstElement * &alfa1,
>>>> GstElement *&alfa2, GstElement * &color)
>>>> {
>>>>
>>>> GstElement * bin = gst_bin_new(nomBin);
>>>>
>>>> if (!bin)
>>>> {
>>>> g_printerr ("No se pudo crear el bin. Saliendo\n");
>>>> return NULL;
>>>> }
>>>>
>>>> alfa1 = gst_element_factory_make ("alpha","alfa1");
>>>> alfa2 = gst_element_factory_make ("alpha","alfa2");
>>>> color = gst_element_factory_make ("ffmpegcolorspace", "color");
>>>> GstElement * mixer = gst_element_factory_make("videomixer", "mixer");
>>>>
>>>> if ((!alfa1) || (!alfa2) || (!color) || (!mixer))
>>>> {
>>>> g_printerr ("Alguno de los elementos del Bin no pudo ser creado.
>>>> Saliendo\n");
>>>> return NULL;
>>>> }
>>>>
>>>> // Anexamos al bin
>>>> gst_bin_add_many(GST_BIN (bin),alfa1,alfa2,mixer,color,NULL);
>>>>
>>>> // Enlazamos elementos
>>>> gst_element_link (alfa1, mixer);
>>>> gst_element_link (alfa2, mixer);
>>>> gst_element_link (mixer,color);
>>>>
>>>> return bin;
>>>> }
>>>>
>>>> void getAndSetController(GstElement * alfa2, gdouble duracion)
>>>> {
>>>> GstController * ctrl = NULL;
>>>> if (!(ctrl = gst_controller_new (G_OBJECT (alfa2), "alpha",NULL))) {
>>>> GST_WARNING ("No puede controlar el elemento fuente\n");
>>>> return;
>>>> }
>>>>
>>>> // Todo valor GValue debe inicializarse en 0
>>>> GValue val_double = { 0, };
>>>> g_value_init (&val_double, G_TYPE_DOUBLE);
>>>>
>>>>
>>>> // Seteo los valores de control del alfa2
>>>>
>>>> GstInterpolationControlSource * csource =
>>>> gst_interpolation_control_source_new();
>>>>
>>>> gst_controller_set_control_source (ctrl, "alpha", GST_CONTROL_SOURCE
>>>> (csource));
>>>>
>>>>
>>>> gst_interpolation_control_source_set_interpolation_mode(csource,GST_INTERPOLATE_LINEAR);
>>>>
>>>>
>>>> g_value_set_double(&val_double, 0.0);
>>>> gst_interpolation_control_source_set(csource,(0*
>>>> GST_MSECOND),&val_double);
>>>>
>>>> g_value_set_double (&val_double, duracion);
>>>> gst_interpolation_control_source_set(csource,(1 *
>>>> GST_MSECOND),&val_double);
>>>>
>>>>
>>>> g_object_unref (csource);
>>>>
>>>> }
>>>>
>>>> void addGhostPadsToBin(GstElement *alfa1, GstElement * alfa2, GstElement
>>>> * color, GstElement* bin)
>>>> {
>>>> /* add ghostpad */
>>>> GstPad * pad1 = gst_element_get_static_pad (alfa1, "sink");
>>>> gst_element_add_pad(bin, gst_ghost_pad_new("alfasink1", pad1));
>>>> gst_object_unref (GST_OBJECT (pad1));
>>>>
>>>> GstPad * pad2 = gst_element_get_static_pad (alfa2, "sink");
>>>> gst_element_add_pad(bin, gst_ghost_pad_new("alfasink2", pad2));
>>>> gst_object_unref(GST_OBJECT(pad2));
>>>>
>>>> GstPad * pad3 = gst_element_get_static_pad (color, "src");
>>>> gst_element_add_pad(bin, gst_ghost_pad_new("colorsrc", pad3));
>>>> gst_object_unref(GST_OBJECT(pad3));
>>>>
>>>>
>>>> }
>>>>
>>>> void crossFade(gdouble duracion, GstElement * & bin)
>>>> {
>>>> // devuelve el bin
>>>> GstElement * alfa1, *alfa2, *color;
>>>> alfa1 = 0;
>>>> alfa2 = 0;
>>>> color = 0;
>>>>
>>>> bin = getBin("bin",alfa1, alfa2,color); // Crea el bin y los
>>>> elementos
>>>>
>>>> getAndSetController(alfa2,duracion);
>>>>
>>>> addGhostPadsToBin(alfa1, alfa2, color, bin);
>>>>
>>>>
>>>> }
>>>>
>>>> GstElement * getSetPipeline(gchar *argv[])
>>>> {
>>>> gint dur1 = 9000; // duration (in ms) to play of first clip
>>>> gint dur2 = 8000; // duration (in ms) to play of second clip
>>>> gint dur_crossfade = 500; //number of milliseconds to crossfade for
>>>> GstElement *comp = 0;
>>>> GstElement *pipeline, *video1, *video2, *op, *bin, *queue, *sink;
>>>>
>>>> //we play two clips serially with a crossfade between them
>>>> // using the gnonlin gnlcomposition element.
>>>> if ((comp = gst_element_factory_make("gnlcomposition",
>>>> "mycomposition")) == NULL)
>>>> {
>>>> printf ("\n Fallo al crear gnlcomposition \n");
>>>> return NULL;
>>>> }
>>>>
>>>> // setup first clip
>>>>
>>>> if ((video1 = gst_element_factory_make("gnlfilesource", "video1"))
>>>> == NULL)
>>>> {
>>>> printf ("\n Falló la creacion del gnlfilesource \n");
>>>> return NULL;
>>>> }
>>>> if (gst_bin_add (GST_BIN (comp), video1) == FALSE)
>>>> {
>>>> printf ("\n No pudo agregar video1 a comp \n");
>>>> return NULL;
>>>> }
>>>>
>>>> g_object_set (video1, "location", argv[1], NULL);
>>>> g_object_set (video1, "start", 0 * GST_MSECOND, NULL);
>>>> g_object_set (video1, "duration", dur1 * GST_MSECOND, NULL);
>>>> g_object_set (video1, "media-start", 0* GST_MSECOND, NULL);
>>>> g_object_set (video1, "media-duration", dur1 * GST_MSECOND, NULL);
>>>> g_object_set (video1, "priority", 1,NULL);
>>>>
>>>> if ((video2 = gst_element_factory_make("gnlfilesource", "video2"))
>>>> == NULL)
>>>> {
>>>> printf ("\n Falló la creacion del gnlfilesource \n");
>>>> return NULL;
>>>> }
>>>> if (gst_bin_add (GST_BIN (comp), video2) == FALSE)
>>>> {
>>>> printf ("\n No pudo agregar video2 a comp \n");
>>>> return NULL;
>>>> }
>>>>
>>>> // setup second clip
>>>> g_object_set (video2, "location", argv[2], NULL);
>>>> g_object_set (video2, "start", (dur1-dur_crossfade) * GST_MSECOND,
>>>> NULL);
>>>> g_object_set (video2, "duration", dur2 * GST_MSECOND, NULL);
>>>> g_object_set (video2, "media-start", 0 * GST_MSECOND, NULL);
>>>> g_object_set (video2, "media-duration", dur2 * GST_MSECOND, NULL);
>>>> g_object_set (video2, "priority", 2,NULL);
>>>>
>>>> // setup the crossfade
>>>> op = gst_element_factory_make("gnloperation", "op");
>>>>
>>>> crossFade(dur_crossfade, bin);
>>>>
>>>> if (gst_bin_add (GST_BIN (op), bin) == FALSE)
>>>> {
>>>> printf ("\n No pudo agregar el bin a la gnloperacion op \n");
>>>> return NULL;
>>>> }
>>>>
>>>> g_object_set (op,"start", (dur1-dur_crossfade) * GST_MSECOND,NULL);
>>>> g_object_set (op,"duration", dur_crossfade * GST_MSECOND,NULL);
>>>> g_object_set (op,"media-start", 0 * GST_MSECOND,NULL);
>>>> g_object_set(op,"media-duration", dur_crossfade * GST_MSECOND,NULL);
>>>> g_object_set(op,"priority",0,NULL);
>>>>
>>>> if (gst_bin_add (GST_BIN (comp), op) == FALSE)
>>>> {
>>>> printf ("\n No pudo agregar la gnloperacion a la gnlcomposition
>>>> \n");
>>>> return NULL;
>>>> }
>>>>
>>>> // setup the backend viewer
>>>> queue = gst_element_factory_make("queue", "queue");
>>>> sink = gst_element_factory_make("autovideosink", "sink");
>>>>
>>>> pipeline = gst_pipeline_new ("video-player");
>>>>
>>>>
>>>> /* Agrego elementos al pipeline */
>>>>
>>>> gst_bin_add_many (GST_BIN (pipeline),comp, queue, sink, NULL);
>>>>
>>>> g_signal_connect (comp, "pad-added", G_CALLBACK (on_pad_added),
>>>> queue);
>>>>
>>>> gst_element_link (queue, sink);
>>>>
>>>> cout << "creó pipeline!!!" << endl;
>>>>
>>>> return pipeline;
>>>>
>>>> }
>>>>
>>>> void startPlay(GstElement * pip)
>>>> {
>>>> /* Set the pipeline to "playing" state*/
>>>> cout << "antes del PLAY" << endl;
>>>> gst_element_set_state (pip, GST_STATE_PLAYING);
>>>> cout << "dp del PLAY" << endl;
>>>>
>>>> }
>>>>
>>>>
>>>> int main(gint argc, gchar *argv[])
>>>> {
>>>> GMainLoop *loop = NULL;
>>>>
>>>> /* init GStreamer */
>>>> gst_init (&argc, &argv);
>>>> gst_controller_init (&argc, &argv);
>>>>
>>>>
>>>> loop = g_main_loop_new (NULL, FALSE);
>>>>
>>>> /* make sure we have a URI */
>>>> if (argc != 3)
>>>> {
>>>> g_print ("Uso: %s <URI1> <URI2>\n", argv[0]);
>>>> return -1;
>>>> }
>>>>
>>>> GstElement * play = getSetPipeline(argv);
>>>>
>>>> cout << "creo pipeline" << endl;
>>>>
>>>> GstBus *bus2 = gst_pipeline_get_bus (GST_PIPELINE (play));
>>>> gst_bus_add_watch (bus2, bus_call, loop);
>>>> gst_object_unref (bus2);
>>>>
>>>> cout << "start play" << endl;
>>>>
>>>> startPlay(play);
>>>>
>>>> /* now run */
>>>> g_main_loop_run (loop);
>>>>
>>>> /* also clean up */
>>>> gst_element_set_state (play, GST_STATE_NULL);
>>>> gst_object_unref (GST_OBJECT (play));
>>>> return 0;
>>>> }
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.freedesktop.org
>>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> Ángel Martín Navas
>>> Investigador / Researcher
>>> Televisión Digital y Servicios Multimedia / Digital TV & Multimedia Services
>>>
>>> Vicomtech - Visual Interaction Communication Technologies
>>>
>>>
>>>
>>> Mikeletegi Pasealekua, 57 - Parque Tecnológico
>>> 20009 Donostia - San Sebastián - Spain
>>> Tel: +[34] 943 30 92 30
>>> Fax: +[34] 943 30 93 93
>>>
>>>
>>> e-mail: amartin at vicomtech.org
>>> www.vicomtech.org
>>>
>>> *** member of IK4 Research Alliance ****
>>> www.ik4.es
>>> *** member of GraphicsMedia.net ****
>>>
>>>
>>> www.graphicsmedia.net
>>>
>>>
>>>
>>> -----------------------------------------------------
>>> Vicomtech is an ISO 9001:2000 certified institute
>>> -----------------------------------------------------
>>>
>>>
>>>
>>> Este mensaje se dirige exclusivamente a su destinatario.
>>> La información incluida en el presente correo es confidencial sometida a
>>> secreto profesional, especialmente en lo que respecta a los datos de
>>> carácter personal, cuya divulgación está prohibida, en virtud de la
>>>
>>>
>>>
>>> legislación vigente. Si usted no es el destinatario legítimo y lo ha
>>> recibido por error o tiene conocimiento del mismo por cualquier motivo,
>>> le rogamos que nos lo comunique por este medio y proceda a destruirlo o
>>>
>>>
>>>
>>> borrarlo. En todo caso abstengase de utilizar, reproducir, alterar,
>>> archivar o comunicar a terceros el presente mensaje así como los ficheros
>>> anexos, todo ello bajo pena de incurrir en responsabilidades legales.
>>>
>>>
>>>
>>> Cualquier opinión contenida en este correo es exclusiva de su autor y no
>>> representa necesariamente la opinión de ASOCIACIÓN CENTRO DE TECNOLOGÍAS
>>> DE INTERACCIÓN VISUAL Y COMUNICACIONES VICOMTECH (en adelante Vicomtech-IK4)
>>>
>>>
>>>
>>> El emisor no garantiza la integridad, rapidez o seguridad del presente correo,
>>> ni se responsabiliza de posibles perjuicios derivados de la captura,
>>> incorporaciones de virus o cualesquiera otras manipulaciones efectuadas por terceros.
>>>
>>>
>>>
>>> Con motivo de la entrada en vigor de la Ley 34/2002, de 11 de julio, de
>>> Servicios de la Sociedad de la Información y de Comercio Electrónico, le
>>> informamos que pueden revocar en cualquier momento, de forma sencilla y gratuita,
>>>
>>>
>>>
>>> el consentimiento para la recepción de mensajes de vicomtech.org en info.lopd at vicomtech.org.
>>>
>>>
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>>
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20110907/4c77f6dd/attachment-0001.htm>
More information about the gstreamer-devel
mailing list