"do-timestamp" leds to [ no 'moov' atom within the first 10 MB ] problem in pipeline

[Sebastian Dröge]

On Di, 2016-01-05 at 05:17 -0800, Ashish Kumar Mishra wrote:
> Hi All , 
> 
> (w.r.t video playback , not considering the audio-video sync aspect
> as of
> now )
> 
> 1) Below is the pipeline ( actual implementation is in C code ) :-
>     filesrc ->  qtdemux -> avdec_h264  -> videoconvert -> timeoverlay
> ->  q1       
>                                                                      
>                                             
> -> avimux -> filesink
>                                                                   
> audiotestsrc -> capsfilter -> q2
> 
> 2) Clock is set by gst_pipeline_set_clock(GST_PIPELINE (pipeline),
> gst_system_clock_obtain())

If you want to force the system clock to be used you have to use
gst_pipeline_use_clock(), not gst_pipeline_set_clock().

> 3) Problem Statement :-
>     ----------------------
> a)  filesrc ( "do-timestamp" = FALSE )  + audiotestsrc ( "do-
> timestamp" =
> TRUE )
>     The created file seek bar plays for 2sec properly. 
>     Then the complete playback "PAUSE" with seek bar buffers for next
> 3sec. 
>     The complete file playback resumes. This continues for the total
> duration of file. 

What do you mean with pause and buffer here? The pipeline goes to
PAUSED state and you get BUFFERING messages? Or does it just hang for a
bit and then continues?

> b)  filesrc ( "do-timestamp" = TRUE )  + audiotestsrc ( "do-
> timestamp" =
> TRUE )
>      The pipeline fails throwing error
>      ERROR: from element /GstPipeline:pipeline/GstQTDemux:qtdemux0:
> GStreamer encountered a 
>      general stream error.
>      Additional debug info:
>      qtdemux.c(6065): gst_qtdemux_process_adapter ():
> /GstPipeline:pipeline/GstQTDemux:qtdemux0:
>      no 'moov' atom within the first 10 MB

do-timestamp=TRUE on filesrc is not going to work well as wrong
timestamps are going to be put on the buffers (the time whenever a
buffer is read!).

-- 
Sebastian Dröge, Centricular Ltd · http://www.centricular.com

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