some puzzles about appsrc

[Ugly Face]

Yes, you see. I have a "qtdemux". The output of "mediarecorder" is an mp4
file. I need to transmit it over rtp with no delay. As I am a new bee to
gstreamer. I tried filesrc first (with mp4 file that has been already
recorded ), and then I want to get appsrc to do the work filesrc does. (As
the filesrc would induce delay)I have no idea whether this is reasonable. 
In a word, My goal is to transmit mp4 video recorded by android device. The
output of recorder is placed in a byte buffer. I try to push these data to
pipeline.

Tim Müller wrote
> When you say an mp4 file, do you mean you want to push data of the whole
> container into the pipeline with appsrc and have a demuxer demux it, or
> are you talking about H.264 video data that you want to push into the
> pipeline?
> 
> Cheers
>  -Tim
> 
> ----- Original message -----
>> Hi, Sorry to keep asking 
>> 
>> My goal is to insert my Mp4 file into my pipeline (My mp4 file is
>> generated by Android device with MediaRecorder). After trying to get
>> some example of appsrc , I find out that they all push raw data into
>> pipeline which is different from my case.
>> 
>> It seems they all use pull mode with signal "need-data" and
>> "enough-data" . they push frames wrapped by buffer into pipeline, in
>> which case , the buffer size is fixed and can be easily calculated . And
>> thing in their buffer is clear too ----- frame!
>> 
>> My question : Can I get my work done in this mode? 
>>                                         If the answer is "yes" , what my
buffer should
>> contain (NALU)?
>>                                           For all know about decoding ,
the decoder need some
>> other information like sps and pps to do the work . The next question is
>> : how can I push these information into my pipeline?
>> 
>> if my way is totally wrong , would you please be kindly to inform me
>> anything that would be helpful?
>> 
>> Thanks
>> 
>> 
>> 
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