[Live-devel] Audio + Video streaming in sync using Live555

Wed Oct 17 06:56:58 PDT 2018

Dear Ross Finlayson,

Thanks for your quick response.

We have done the changes according to your response.
After this changes, we are able to do Audio+Video streaming but we are
getting Audio+Video in sync only for one minute.
After that we are not getting Audio+video in sync.

Below is the code changes we have done in the testOnDemandRTSPServer.cpp.

1. {
char const* streamName = "AudioVideoTest";
char const* inputFileName = "/data/misc/qmmf/test_track_1_1920x1080.h264";
char const* inputFileNameAud = "/data/misc/qmmf/recorder_fifo_audio.aac";
ServerMediaSession* sms = ServerMediaSession::createNew(*env, streamName,
streamName, descriptionString);
sms->addSubsession(ADTSAudioFileServerMediaSubsession ::createNew(*env,
inputFileNameAud, reuseFirstSource));
sms->addSubsession(H264VideoFileServerMediaSubsession ::createNew(*env,
inputFileName, reuseFirstSource));
rtspServer->addServerMediaSession(sms);
announceStream(rtspServer, sms, streamName, inputFileName);
}

2. We have to make the changes in the ADTSAudioFileSource.cpp to read the
AAC-LC Header as we are getting the error
while streaming the AAC-LC Fifo with the H.264 Encoded Video Fifo. (I have
attached this file for your reference)

But, Now issue is we are not able to get the Audio/Video in sync for more
then one minute.

Please provide your valuable suggestions to resolve this issue.

*With Best Regards,*
Dhrupal Tilava
VVDN Technologies Pvt. Ltd
Cell : +91 9428158863 | Skype : dhrupal.tilava_1

On Wed, Oct 17, 2018 at 12:35 AM <live-devel-request at ns.live555.com> wrote:

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> Today's Topics:
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>    1. Audio + Video streaming in sync using Live555 (Dhrupal Tilava)
>    2. Re: Audio + Video streaming in sync using Live555 (Ross Finlayson)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 Oct 2018 17:03:48 +0530
> From: Dhrupal Tilava <dhrupal.tilava at vvdntech.in>
> To: live-devel at ns.live555.com
> Subject: [Live-devel] Audio + Video streaming in sync using Live555
> Message-ID:
>         <
> CAB2eDJWn_FuVOxBxL1insD8MzpgDyTJ7gW71WT9bOyyvxFGnJA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear Team,
>
> we are using *testOnDemandRTSPServer.cpp *for the Live Video streaming.
> So, in the input I am giving H.264 Encoded fifo to the compile binary using
> this testOnDemandRTSPServer.cpp and I am getting RTSP URL for the Video
> streaming.
> This is working fine.
>
> Now,we want to add the Audio with Video in the Live streaming. For the
> Audio I have one AAC-LC Encoded fifo.
> But to stream Audio and Video fifo in time sync, I am not able to find any
> option in the testOnDemarRTSPServer.cpp file.
>
> It would be really helpful if you can provide any example/reference in
> which, I give the Audio fifo and video fifo as input and then I get the URL
> for the streaming.
> So, I can do the audio and video streaming smoothly.
>
> Note: we have separate fifo for the Audio and Video.
>
> Thank you so much in advance for your kind support.
>
> *With Best Regards,*
> Dhrupal Tilava
> VVDN Technologies Pvt. Ltd
> Cell : +91 9428158863 | Skype : dhrupal.tilava_1
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 2
> Date: Tue, 16 Oct 2018 06:01:22 -0700
> From: Ross Finlayson <finlayson at live555.com>
> To: LIVE555 Streaming Media - development & use
>         <live-devel at ns.live555.com>
> Subject: Re: [Live-devel] Audio + Video streaming in sync using
>         Live555
> Message-ID: <3582FB49-5E1F-4A32-93BD-926A95292080 at live555.com>
> Content-Type: text/plain;       charset=utf-8
>
> > we are using testOnDemandRTSPServer.cpp for the Live Video streaming.
> > So, in the input I am giving H.264 Encoded fifo to the compile binary
> using this testOnDemandRTSPServer.cpp and I am getting RTSP URL for the
> Video streaming.
> > This is working fine.
> >
> > Now,we want to add the Audio with Video in the Live streaming. For the
> Audio I have one AAC-LC Encoded fifo.
> > But to stream Audio and Video fifo in time sync, I am not able to find
> any option in the testOnDemarRTSPServer.cpp file.
> >
> > It would be really helpful if you can provide any example/reference in
> which, I give the Audio fifo and video fifo as input and then I get the URL
> for the streaming.
> > So, I can do the audio and video streaming smoothly.
>
> Streaming audio+video is easy: Just call ?addSubsession()? twice - once
> for the video source, another time for the audio source.  (So that your
> ?ServerMediaSession? object contains two ?ServerMediaSubsession? objects -
> one for the video, one for the audio.)
>
> However, for audio/video synchronization to work properly, each source
> (video and audio) *must* generate proper ?fPresentationTime? values for
> each frame, and these *must* be aligned with ?wall clock? time -  i.e., the
> same time that you?d get if you called ?gettimeofday()?.
>
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
>
>
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> ------------------------------
>
> End of live-devel Digest, Vol 179, Issue 4
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