Fast forward play | seek rate | trick play

[Luis de Bethencourt]

2011/2/14 zwresh <zwresh at 126.com>:
> I used the  qtdemux  & matroskademux  plugin  for mp4 & mkv format
> container,
>  but i used  my decoder  plugin  for h264 and mpeg4asp codec.
> maybe my decoder plugin is not correct for trick play （X2,X4,X8,X16）?
>
>
>
> whether dropping the SKIP flag or not, the result is the same .
> it does't change rate but only change the seek position.
>
>
> I tried gst_element_seek_simple function, it could seek but how to change
> rate by param ?
>
>
>

So does the change of rate work with qtdemux/mkvdemux? It should.

You are right, I thought the simple_seek also had the rate flag but it
doesn't. So you need to use gst_element_seek ()
My bad.

Luis


>
>
>
>
> At 2011-02-14 02:30:25，"Luis de Bethencourt" <luis at debethencourt.com> wrote:
>
>>zwresh,
>>
>>What is the content format/codec?
>>Try the simple seek I mentioned and dropping the SKIP flag as Tim
>>suggested and let us know how it goes.
>>
>>Luis
>>
>>2011/2/12 zwresh <zwresh at 126.com>:
>>> It can seek  the right position and playback, but can not change the
>>> playback rate.
>>>
>>>
>>>
>>> At 2011-02-11 21:03:11，"Luis de Bethencourt" <luis at debethencourt.com> wrote:
>>>
>>>>2011/2/11 zwresh <zwresh at 126.com>:
>>>>>
>>>>> Anybody know how to  fast forward  play  such as by X2, X4 ,X8,X16 ?
>>>>>
>>>>> I tried the avidemux/qtdemux/flvdemux/matroskademux demuxer ,
>>>>> and used  the decoder of mine.
>>>>> And must i do somthing in my decoder plugin ?
>>>>>
>>>>> Following is the code snippet of app which I have:
>>>>> --------------------------------------------------------------------------------------
>>>>>                 ret =
>>>>> (int)gst_element_query_position(pipeline,&format,&pos_cur);
>>>>>                 pos_seek = pos_cur + ( time_seek * GST_SECOND );
>>>>>
>>>>>                 gst_element_seek (pipeline,
>>>>>          &nbsp ;                      4.0,
>>>>>                                 GST_FORMAT_TIME,
>>>>>                                 GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT
>>>>> | GST_SEEK_FLAG_SKIP,
>>>>>                                 GST_SEEK_TYPE_SET,
>>>>>                                 pos_seek,
>>>>>            &nbs p;                    GST_SEEK_TYPE_NONE,
>>>>>                                 GST_CLOCK_TIME_NONE);
>>>>> ------------------------------------------------------------------------------------------
>>>>
>>>>
>>>>So is it not accepting the change in the playback rate? or is it not seeking?
>>>>Have you tried using gst_element_seek_simple () ?
>>>>
>>>>Luis
>>>
>>>
>>>
>
>
>
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