How can I make a playbin2 to jump to the last video frame and display it?

[wl2776]

I would like my playbin2 to perform "Go End" command - display the last video frame in the loaded file.
Here is how I create the playbin:

m_player = gst_element_factory_make("playbin2","playbin0");
GstElement *bus = (GstElement *)gst_pipeline_get_bus(GST_PIPELINE(m_player));
gst_bus_set_sync_handler (GST_BUS(bus), (GstBusSyncHandler)gst_bus_sync_handler, this);
gst_bus_add_watch (GST_BUS(bus), bus_call, this);
gst_object_unref(bus);
m_loop = g_main_loop_new(NULL,FALSE);

if(!m_videosink){
        m_videosink = gst_element_factory_make("directdrawsink","videosink");
        if(m_videosink){
                g_object_set(m_videosink,"sync",TRUE,NULL);
                gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (m_videosink),m_hwnd);
                        g_object_set(G_OBJECT(m_player),"video-sink",m_videosink,NULL);
        }
}
g_object_set(G_OBJECT(m_player),"uri", g_locale_to_utf8(filename,-1,NULL,NULL,NULL),NULL);

gst_element_set_state(GST_ELEMENT(m_player),GST_STATE_PLAYING);

And here is how I currently jump to the end.

gst_element_seek_simple(GST_ELEMENT(m_player),
                GST_FORMAT_TIME,
                (GstSeekFlags)(GST_SEEK_FLAG_FLUSH|GST_SEEK_FLAG_ACCURATE),
                m_stream_duration);
gst_element_get_state(GST_ELEMENT(m_player),NULL,NULL,100 * GST_MSECOND);
gst_element_set_state(GST_ELEMENT(m_player),GST_STATE_PAUSED);

I've turned on the debug messages (--gst-debug=playbin2:5,playbin:5), however, I don't see anything, when seeking functions are called.

[wl2776]

Yes!
I've done it!
To those, who's interested, my solution is

void gst_player::go_end()
{
  if(m_player){
    gboolean rb;
    int attempts=0;
    do {
      rb=gst_element_seek(GST_ELEMENT(m_player),-1.0,
                  GST_FORMAT_TIME,(GstSeekFlags)(GST_SEEK_FLAG_FLUSH|GST_SEEK_FLAG_ACCURATE),
                  GST_SEEK_TYPE_SET,0,GST_SEEK_TYPE_END,0);
      if(!rb) Sleep(100);
    }while(!rb || ++attempts>3);
               
    if(rb){
        gst_element_set_state(GST_ELEMENT(m_player),GST_STATE_PLAYING);
    }
  }
}

This makes the playbin2 to display the last frame.
In all other cases, I've tried, it successfully positioned to the end of file, but didn't draw the last frame.

[wl2776]

Further studies have shown, that this doesn't work on all files. I tried avi and mpeg-2 PS files.
I am still looking for reliable solution.
I am developing a medial player with GStreamer, in windows. My task is to make it to jump to the end of file and display the last frame.

I use playbin2 with directdraw videosink.

wl2776 wrote

void gst_player::go_end()
{
  if(m_player){
    gboolean rb;
    int attempts=0;
    do {
      rb=gst_element_seek(GST_ELEMENT(m_player),-1.0,
                  GST_FORMAT_TIME,(GstSeekFlags)(GST_SEEK_FLAG_FLUSH|GST_SEEK_FLAG_ACCURATE),
                  GST_SEEK_TYPE_SET,0,GST_SEEK_TYPE_END,0);
      if(!rb) Sleep(100);
    }while(!rb || ++attempts>3);
               
    if(rb){
        gst_element_set_state(GST_ELEMENT(m_player),GST_STATE_PLAYING);
    }
  }
}

This makes the playbin2 to display the last frame.
In all other cases, I've tried, it successfully positioned to the end of file, but didn't draw the last frame.

[Kapil Agrawal]

Not sure what could be the exact usage of same?
But if we just jump to last frame it might happen that last frame is a black (probablity is high) , will still it be useful.

-kapil

On Sat, Feb 27, 2010 at 9:37 PM, wl2776 <[hidden email]> wrote:

Further studies have shown, that this doesn't work on all files. I tried avi
and mpeg-2 PS files.
I am still looking for reliable solution.
I am developing a medial player with GStreamer, in windows. My task is to
make it to jump to the end of file and display the last frame.

I use playbin2 with directdraw videosink.

wl2776 wrote:
>
> void gst_player::go_end()
> {
>   if(m_player){
>     gboolean rb;
>     int attempts=0;
>     do {
>       rb=gst_element_seek(GST_ELEMENT(m_player),-1.0,
>
> GST_FORMAT_TIME,(GstSeekFlags)(GST_SEEK_FLAG_FLUSH|GST_SEEK_FLAG_ACCURATE),
>                   GST_SEEK_TYPE_SET,0,GST_SEEK_TYPE_END,0);
>       if(!rb) Sleep(100);
>     }while(!rb || ++attempts>3);
>
>     if(rb){
>         gst_element_set_state(GST_ELEMENT(m_player),GST_STATE_PLAYING);
>     }
>   }
> }
>
> This makes the playbin2 to display the last frame.
> In all other cases, I've tried, it successfully positioned to the end of
> file, but didn't draw the last frame.
>

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[wl2776]

Kapil Agrawal wrote

Not sure what could be the exact usage of same?
But if we just jump to last frame it might happen that last frame is a black
(probablity is high) , will still it be useful.

For example, video editing. If we have a part of a video stream, saved (remuxed) to a file, for example the whole news translation and want to have one topic, exactly cut from the whole stream.
Anyway, I have this task, my customers want this option, I, actually, don't care very much, how they use this. And I would appreciate if the community helps me with finding a reliable solution.