Is it possible to do Audio and Video synchronization for parallel pipelines

[Manoj89]

Hi,
   (i)  I dont know whether PTS which I am getting from the application
thread is aligned or not? How 
        we can check aligment of PTS from application thread?
   (ii)  I am using the default GstSegment and not using any GstSegment bin.
   (iii) I have set time format of appsrc to GST_FORMAT_TIME like this:
     
      
g_object_set(GST_OBJECT(data->videoappsrc),"format",GST_FORMAT_TIME,NULL);
      
g_object_set(GST_OBJECT(data->audioappsrc),"format",GST_FORMAT_TIME,NULL);

   (iv) Today I tried by using "do-timestamp" property of appsrc for audio
and video.I get AV playabck with   
        sync for sometime and after that it goes out of sync.I have set
following properties for appsrc

       g_object_set(GST_OBJECT(data->videoappsrc),"format",GST_FORMAT_TIME
                                           ,"do-timestamp",TRUE
                                           ,"min-latency",videominlatency 
                                          
,"max-latency",videomaxlatency,NULL);

      videominlatency and videomaxlatency are queried from the latency event
of videoappsrc.
   (v) While implementing (iv) I return the 
        running_time = gst_clock_get_time(data->pipeline) -
gst_element_get_base_time(data->pipeline)
        
        to the application thread as my current position.

   (vi) My application thread expects me to send back the current_position
of playback as time update.So whether I can send running_time as
current_position when implementing (iv).

With Regards
Manoj




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