[gst-devel] Seek operation

Sumanth V sumanth.v at allaboutif.com
Thu Dec 25 11:06:59 CET 2008

Thanks for your reply..

   When i want to do PAUSE operation i send
gst_element_set_state (pipeline, GST_STATE_PAUSED)..

when i want to do FORWARD operation i send the following seek event.
gst_element_set_state (pipeline, GST_STATE_PLAYING);
 RetVal = gst_element_seek( pipeline,4.0, GST_FORMAT_TIME,

forward operation dose happen but it takes some time( after few seconds ).
when in FORWARD
i PAUSE the operation by gst_element_set_state (pipeline, GST_STATE_PAUSED).

now i want to resume the play in normal speed i do the following:-

gst_element_set_state (pipeline, GST_STATE_PLAYING);
RetVal = gst_element_seek( pipeline, 1.0,GST_FORMAT_TIME ,

but still it dose not resume the play from position where i had PAUSEd in
FORWARD mode, but instead it resume the Play back from where i had pressed
PAUSE before performing FORWARD operation.

is it the right way of performing the seek operation? previously i used to
use the  GST_SEEK_FLAG_FLUSH, now i have removed it, but still its playing
from the wrong offset.


On Thu, Dec 25, 2008 at 3:13 PM, Eric Zhang <nicolas.m.zhang at gmail.com>wrote:

> Hi, gstreamer-devel:
>     Did your seek operation succeed? Which state do you seek the pipeline?
> PAUSED or PLAYING? Maybe you can describe your steps more clearly.
> Eric Zhang
> 2008/12/24 Sumanth V <sumanth.v at allaboutif.com>
>> Hi All,
>>        I am writing a application which dose a trickmode operation on the
>> stored file. When i do PAUSE and then PLAY it resumes play from where i had
>> PAUSED. But when i do seek forward by setting the rate to 2.0 / 4.0 FORWARD
>> happens but when i press PLAY the play back dose not resume from where i
>> pressed PLAY but instead starts playing from offset where i had selected to
>> forward.
>> To play while forwarding i send this seek event.
>> gst_element_seek( pipeline, 1.0,GST_FORMAT_TIME ,GST_SEEK_FLAG_FLUSH ,
>>                                                GST_SEEK_TYPE_CUR, 0,
>> Is this this the correct seek event format??
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