Video window is not visible

[Ayan]

Hi,

I've tried the following gstreamer code but no video is there after running. I'm using this command: gcc -Wall test.c -o test `pkg-config --cflags --libs gstreamer-1.5` -lm and to run: ./test.

code:

#include <gst/gst.h>

int main(int argc, char *argv[]) {
  GstElement *pipeline;
  GstBus *bus;
  GstMessage *msg;

  /* Initialize GStreamer */
  gst_init (&argc, &argv);

  /* Build the pipeline */
  pipeline = gst_parse_launch ("playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm", NULL);

  /* Start playing */
  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  /* Wait until error or EOS */
  bus = gst_element_get_bus (pipeline);
  msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_ERROR | GST_MESSAGE_EOS);

  /* Free resources */
  if (msg != NULL)
    gst_message_unref (msg);
  gst_object_unref (bus);
  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_object_unref (pipeline);
  return 0;
}

[Yasushi SHOJI-2]

Hi,

On Thu, Jun 29, 2017 at 6:45 PM, Ayan <[hidden email]> wrote:
>
> I've tried the following gstreamer code but no video is there after running.
> I'm using this command: gcc -Wall test.c -o test `pkg-config --cflags --libs
> gstreamer-1.5` -lm and to run: ./test.

The code seems to work here.

Here is the command I used to build.

gcc -Wall -Wextra -g $(pkg-config --cflags --libs gstreamer-1.0) a.c

I don't think there is `gstreamer-1.5` package config, does it?

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[Ayan]

Hi.

Thanks for your response. I've tried to build using your command but getting errors:
/tmp/ccT3kyVs.o: In function `gst_message_unref':
/usr/include/gstreamer-1.0/gst/gstmessage.h:336: undefined reference to `gst_mini_object_unref'
/tmp/ccT3kyVs.o: In function `main':
/home/ayankarmakar/Desktop/test.c:9: undefined reference to `gst_init'
/home/ayankarmakar/Desktop/test.c:12: undefined reference to `gst_parse_launch'
/home/ayankarmakar/Desktop/test.c:15: undefined reference to `gst_element_set_state'
/home/ayankarmakar/Desktop/test.c:18: undefined reference to `gst_element_get_bus'
/home/ayankarmakar/Desktop/test.c:19: undefined reference to `gst_bus_timed_pop_filtered'
/home/ayankarmakar/Desktop/test.c:24: undefined reference to `gst_object_unref'
/home/ayankarmakar/Desktop/test.c:25: undefined reference to `gst_element_set_state'
/home/ayankarmakar/Desktop/test.c:26: undefined reference to `gst_object_unref'
collect2: error: ld returned 1 exit status

[Yasushi SHOJI-2]

Hi,

On Mon, Jul 3, 2017 at 6:05 PM, Ayan <[hidden email]> wrote:
>
> Thanks for your response. I've tried to build using your command but getting
> errors:
> /tmp/ccT3kyVs.o: In function `gst_message_unref':
> /usr/include/gstreamer-1.0/gst/gstmessage.h:336: undefined reference to
> `gst_mini_object_unref'

first of all, what is your dev env?

second of all, do you really have gstreamer-1.5 package config file?

try:

$ pkg-config --list-all | grep gstreamer-1.

third, print what pkg-config says with the following command:

$ pkg-config --cflags --libs gstreamer-1.5  (if you really have 1.5)

fourth, you are telling playbin to pick video sink.  I don't know which one the playbin

is using.

does the following command work for you?

$ gst-launch-1.0 -v playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm

if it works, it should print the video sink it's using.  (or at least it should

print what it tries to use?)

best,

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[Ayan]

Hi,
Thanks for your response, following are some info which you wanted to know:
1) Ubuntu 14.04 Terminal

2) yes, I have.

3) -pthread -I/usr/include/gstreamer-1.5 -I/usr/lib/x86_64-linux-gnu/gstreamer-1.5/include -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -lgstreamer-1.5 -lgobject-2.0 -lglib-2.0

4) yes , it is working, video is playing.

 

But don't understand what's wrong with my command/your command? 

Ayan.

On 4 July 2017 at 14:09, Yasushi SHOJI-2 [via GStreamer-devel] <[hidden email]> wrote:

Hi,

On Mon, Jul 3, 2017 at 6:05 PM, Ayan <[hidden email]> wrote:
>
> Thanks for your response. I've tried to build using your command but getting
> errors:
> /tmp/ccT3kyVs.o: In function `gst_message_unref':
> /usr/include/gstreamer-1.0/gst/gstmessage.h:336: undefined reference to
> `gst_mini_object_unref'

first of all, what is your dev env?

second of all, do you really have gstreamer-1.5 package config file?

try:

$ pkg-config --list-all | grep gstreamer-1.

third, print what pkg-config says with the following command:

$ pkg-config --cflags --libs gstreamer-1.5  (if you really have 1.5)

fourth, you are telling playbin to pick video sink.  I don't know which one the playbin

is using.

does the following command work for you?

$ gst-launch-1.0 -v playbin uri=https://www.freedesktop.org/software/gstreamer-sdk/data/media/sintel_trailer-480p.webm

if it works, it should print the video sink it's using.  (or at least it should

print what it tries to use?)

best,

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             yashi

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[Yasushi SHOJI-2]

Hi,

On Tue, Jul 4, 2017 at 5:55 PM, Ayan <[hidden email]> wrote:
>
> 1) Ubuntu 14.04 Terminal

Trusty doesn't seem to have gstreamer 1.5.

I don't know how you created your dev env.

> 4) yes , it is working, video is playing.

I assume that Ubuntu version of gstreamer is working.  but your 1.5 is not.

I'm sorry I can't help.

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[Ayan]

Hi,

I've installed gstreamer 1.5 for kurento-media-server. It's okay, I'll look around. Can you help me on this: Is there any other way to have bus without the help of pipeline ?

[Nicolas Dufresne-5]

Le mercredi 05 juillet 2017 à 01:34 -0700, Ayan a écrit :
> Hi,
>
> I've installed gstreamer 1.5 for kurento-media-server. It's okay, I'll look
> around. Can you help me on this: Is there any other way to have bus without
> the help of pipeline ? 

It is quite bad to depend on a development (unstable) release of
GStreamer. Is Kurento dead and that's why it's stuck in development ?

Nicolas
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[Ayan]

I'm stuck at this, can anyone help, please.

[filnet]

On Linux you might have to call XInitThreads() or something along those lines.

Le Jeudi 6 juillet 2017 9h50, Ayan <[hidden email]> a écrit :

I'm stuck at this, can anyone help, please.



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[Ayan]

I don't understand what you are saying.
I know that one way to get bus is:
  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));

My question is , Is there any other way to get bus without involving  pipeline?

[Ayan]

I think, we can get bus from gst element by gst_element_get_bus (), but I don't know whether this bus will produce element specific messages or application messages?