seek in webrtcbin pipeline

[Jack]

Come back with this thread...

I tried the following to seek in a pipeline involving webrtcbin pad.
Sebastian recommended to seek only on the part before webrtcbin, but i
can't make it work, i certainly missed something or misunderstood
something. My soundfile on the hard drive last 18 min :

- create a pipeline 'main' : filesrc ! ... ! tee
- set state of this pipeline to PLAYING
- seek on this pipeline with seek_simple(Gst.Format.TIME,
Gst.SeekFlags.FLUSH | Gst.SeekFlags.KEY_UNIT, 120 * Gst.SECOND)
- gst_pipe_to_add = Gst.parse_bin_from_description('queue ! webrtcbin
name=sendrecv bundle-policy=max-bundle', True)
- add gst_pipe_to_add to the pipeline 'main'
- link between tee and gst_pipe_to_add
- set state of gst_pipe_to_add to PLAYING

I can get the sound stream but it start from the beginning instead of 2
min after the beginning.
Any clue or more ?
Thanx.
++

Jack




Le 11/02/2019 à 11:19, Jack a écrit :
> Trying to be more precise on the word "isolate" I used in my previous
> answer :
> do I need to use appsrc/appsink or proxysrc/proxysink to seek on the
> pipeline connected to a webrtcbin pipeline, or I am on the wrong way ?
> ++
> 
> Jack
> 
> 
> 
> Le 08/02/2019 à 17:41, Jack a écrit :
>> Hello Sebastian,
>>
>> Thanks for your answer.
>> Can you tell me how to achieve a seek on a particilar part of a pipeline
>> ? Do I have to "isolate" the part before webrtcbin, and then how ? Are
>> there different options ?
>> I am a little bit lost !
>> ++
>>
>> Jack
>>
>>
>>
>> Le 05/02/2019 à 10:52, Sebastian Dröge a écrit :
>>> On Fri, 2019-02-01 at 16:59 +0100, Jack wrote:
>>>> Hello !
>>>>
>>>> I am able to seek with seek_simple() in a simple pipeline like :
>>>>
>>>> 'filesrc location=17seconds48000D.wav ! wavparse ! audioconvert !
>>>> audioresample ! autoaudiosink'
>>>>
>>>> But how I can seek in this pipeline using webrtcbin ? :
>>>>
>>>> 'webrtcbin name=sendrecv bundle-policy=max-bundle filesrc
>>>> location=17seconds48000D.wav ! wavparse ! opusenc ! rtpopuspay !
>>>> application/x-rtp,media=audio,encoding-name=OPUS,payload=96,clock-
>>>> rate=48000
>>>> ! sendrecv.
>>>>
>>>> Using directly seek_simple() seems to not work.
>>>
>>> You need to seek only on the part of the pipeline before the webrtcbin
>>> and ensure that payloader and everything following get a contiguous
>>> segment of data.
>>>
>>>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>
>>
>>
>>
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>> gstreamer-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
> 
> 
> 
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