[Live-devel] Live media supports 3gp file format

Shaswata Jash shaswata at alumnux.com
Thu Sep 7 06:36:56 PDT 2006


Hi Rajesh,

I can think of two possibilities:

1. Offline (i.e. before starting the streaming of .3gp video file) extract the video(H263) and audio track(AMR) in two separate file. Now you have to stream this file simultaneously by creating two separate subsession.
H263 Video : H263plusVideoFileServerMediaSubsession (H263plusVideoRTPSink + H263plusVideoStreamFramer)
AMR audio : AMRAudioFileServerMediaSubsession ( AMRAudioRTPSink + AMRAudioFileSource)
The tracks can be easily be extracted by using 'mp4creator' tool of MPEG4IP project.
Audio and video synchronization will be taken care by the player (client) in most cases (if at all). 

2. Develop a completely new class derived from a FramedSource which can read individual frame from a .3gp file directly (ISO Base media compliant). Now write a new FileServerMediaSubsession which calls those new FramedSource. 

With regards,
Shaswata

  ----- Original Message ----- 
  From: Rajesh 
  To: LIVE555 Streaming Media - development & use 
  Sent: Thursday, September 07, 2006 4:51 PM
  Subject: Re: [Live-devel] Live media supports 3gp file format


  Hi Shaswata
  3gp file format (H263(Video) + AMR(Audio)).If I am receiving stream in this format then only I can play the file.can u tell me that live Media supports
  .mpg file format

  with regards
  rajesh
    ----- Original Message ----- 
    From: Shaswata Jash 
    To: LIVE555 Streaming Media - development & use 
    Sent: Thursday, September 07, 2006 4:41 PM
    Subject: Re: [Live-devel] Live media supports 3gp file format


    Hi Rajesh,

    I think live supports .mpg (both program and transport stream) file for streaming. But i'm pretty confused on looking your requirement: Mpeg Program Stream and transport Stream are completely different from .3gp format. It wil be easier to suggest if you mention little bit of the use case (including what kind of video codec is expected)...


    With regards,
    Shaswata
    ----- Original Message ----- 
      From: Rajesh 
      To: LIVE555 Streaming Media - development & use 
      Sent: Thursday, September 07, 2006 3:19 PM
      Subject: Re: [Live-devel] Live media supports 3gp file format


      Hi Shaswata
      using testOnDemandRTSpServer and sending req from VLc I am able to play the file.
      But my limitaions is 3gp format.I can play file only in 3gp format or at max mpg fomat.

      plz suggest in this way

      with regards
      rajesh

        ----- Original Message ----- 
        From: Shaswata Jash 
        To: LIVE555 Streaming Media - development & use 
        Sent: Thursday, September 07, 2006 2:53 PM
        Subject: Re: [Live-devel] Live media supports 3gp file format


        Hi Rajesh,

        Most probably it is the problem with the test.m4v file itself. The test.m4v file must conform to MPEG4 video elementary stream format. You can verify it easily by playing it through MPlayer.
        Even you can create a .m4v file by yourself by using 'mp4creator' tool of MPEG4IP project (just extract the video track from any .mp4 file).
        For further verification, just check with the etherial capture whether testOnDemandRTSPServer is sending the RTP packets. If it is not sending then you can be almost certain that 'test.m4v' is corrupt.
        Waiting for your test result...


        With regards,
        Shaswata

          ----- Original Message ----- 
          From: Rajesh 
          To: LIVE555 Streaming Media - development & use 
          Sent: Thursday, September 07, 2006 2:06 PM
          Subject: Re: [Live-devel] Live media supports 3gp file format


          Hi Shaswata
          when I tried with mpeg4 also it's not reading the file.
          i used testOnDemandRTSPServer and used mpeg4 file as test.m4v.
          The file is not opening.
          can u plz guide me for mpeg4 format.

          with regards
          rajesh

            ----- Original Message ----- 
            From: Shaswata Jash 
            To: LIVE555 Streaming Media - development & use 
            Sent: Thursday, September 07, 2006 1:49 PM
            Subject: Re: [Live-devel] Live media supports 3gp file format


            Hi Rajesh,

            To my best knowledge, Live Media does not support 3gp file format. A 3gp file format (most commonly with .3gp extension) can be of two type either hinted or without hint. In both of the case, the file format conforms to ISO Base Media file format.
            In live library, there is no FramedSource to read from a ISO BaseMedia file format.

            With regards,
            Shaswata
            ----- Original Message ----- 
              From: Rajesh 
              To: LIVE555 Streaming Media - development & use 
              Sent: Thursday, September 07, 2006 11:52 AM
              Subject: [Live-devel] Live media supports 3gp file format


              Hi All
              Live Media supports 3gp file format.if it supports,how to use this.

              with regards
              rajesh


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