playbin2, gst_element_seek and http.

[Kyrylo V Polezhaiev]

I found the following warning from FLV demuxer: "failed to find an index, seeking back to beginning." 
http://pastebin.com/DwGbp58W
GSTOVIDEMUX is just renamed GstFlvDemux.

> On 19 May 2012 13:49, Kyrylo V Polezhaiev <polezhaiev at ukr.net> wrote:
> > Thanks, Luis.
> >> Why is the GstElement 'pipeline' passed to all functions, except for
> >> the seek that is 'bin'?
> > I use pipeline as the first argument instead of playbin2 now.
> >> May I ask why you are changing the state to paused and then setting it
> >> back again?
> > Okay, now I am removed this part. So now I have:
> >
> >    gint64 position, length;
> >    GstFormat format = GST_FORMAT_TIME;
> >    gst_element_query_duration (pipeline, &format, &length);
> >    position = static_cast<gint64>(length * (percents * 0.01));
> >    if (!gst_element_seek(pipeline, 1.0, format, GST_SEEK_FLAG_FLUSH, GST_SEEK_TYPE_SET, position, GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
> >    {
> >        MessageBoxA(0, "gst_element_seek failed", "Error", 0);
> >    }
> >
> > Just before gst_element_seek I have following values:
> >    length   = 187623000000
> >    position = 73124858969
> >    percents = 38.974358
> >    format   = GST_FORMAT_TIME
> >
> > But now video still begins from start instead of from 73124858969.
> >
> >
> 
> That is very strange, it should work.
> Can you get a GST_DEBUG log and paste it in pastebin?
> I'm intrigued.
> 
> Thanks,
> Luis
> 
> >
> >> On 19 May 2012 11:53, Luis de Bethencourt <luis at debethencourt.com> wrote:
> >> > On 19 May 2012 09:58, Kyrylo V Polezhaiev <polezhaiev at ukr.net> wrote:
> >> >> Hello, I am using the following code in my browser plugin to set position in video:
> >> >>
> >> >> void OVIMediaPlayer::set_position(float percents)
> >> >> {
> >> >>     gint64 position, length;
> >> >>     GstFormat format = GST_FORMAT_TIME;
> >> >>     gst_element_query_duration (pipeline, &format, &length);
> >> >>     position = static_cast<gint64>(length * (percents * 0.01));
> >> >>     GstState state;
> >> >>     gst_element_get_state(pipeline, &state, NULL, GST_CLOCK_TIME_NONE);
> >> >>     gst_element_set_state(pipeline, GST_STATE_PAUSED);
> >> >>     gst_element_seek(bin, 1.0, format, GST_SEEK_FLAG_FLUSH, GST_SEEK_TYPE_SET, position, GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
> >> >>     gst_element_set_state(pipeline, state);
> >> >>     return;
> >> >> }
> >> >>
> >> >> My pipeline contains playbin2 with directdraw video sink and plays video from http server. Server supports HTTP Range Headers. My function gets percents argument in range [0; 100] to set position of video. But after each call video begins from begging.
> >> >>
> >> >
> >> > May I ask why you are changing the state to paused and then setting it
> >> > back again?
> >> > The rest looks OK, so I'm puzzled by this.
> >>
> >> Why is the GstElement 'pipeline' passed to all functions, except for
> >> the seek that is 'bin'?
> >> Can you check that you are really passing a [0-100] percent value?
> >> Considering you are passing
> >> that value as a float it might be [0-1] somewhere else.
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