Gstreamer with visual C++ express 2010 - tutorial 1

Question

I'm new to Gstreamer, and I have problems when I compile the tutorial 1 of Gstreamer. I'm using Windows 7 64 bit with visual c++ express 2010, and Gstreamer SDK 2012.11 32 bits (downloaded from here). Here is the code : ``` #include "stdafx.h" #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 ("playbin2 uri=file://E:/test_1.MOV", 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; } ``` First error : ``` error C2664: 'gst_bus_timed_pop_filtered' : cannot convert…

Accepted Answer

lFirst error

Probably the code is compiled as C++, which is a bit more strict at enum casts. Try replacing: `GST_MESSAGE_ERROR | GST_MESSAGE_EOS` with `(GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS)`

Second error

There is high probability, that the line:

```
pipeline = gst_parse_launch ("playbin2 uri=file://E:/test_1.MOV", NULL);
```

returns NULL, and the rest of errors are result of this. Why it could return NULL? There are many reasons. Maybe you have not installed plugin with "playbin2"? Try this:

- Pass a pointer to `GError` structure as second parameter to `gst_parse_launch` (it has a `message` field which can give you some hint)

- Pass `--gst-debug-level=4` or even higher as a commandline parameter when running your program. You will see many informations at console output, the reason of failure will be somewhere there.

Gstreamer with visual C++ express 2010 - tutorial 1

Solution

Problem