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Questions tagged [rtp]

The Real-time Transport Protocol (RTP) defines a standardized packet format for delivering audio and video over IP networks.

RTP, the real-time transport protocol. RTP provides end-to-end network transport functions suitable for applications transmitting real-time data, such as audio, video or simulation data, over multicast or unicast network services. RTP does not address resource reservation and does not guarantee quality-of-service for real-time services. The data transport is augmented by a control protocol (RTCP) to allow monitoring of the data delivery in a manner scalable to large multicast networks, and to provide minimal control and identification functionality. RTP and RTCP are designed to be independent of the underlying transport and network layers. The protocol supports the use of RTP-level translators and mixers.

More information at Wikipedia Page on RTP

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Asterisk RTP data to Node.JS app

I've successfully set up Asterisk on my server using the res_pjsip Hello World configuration from their wiki, and I want to be able to forward the RTP data to a Node.JS app, which can interpret RTP. I've heard about directmedia and directrtpsetup…
qxu21
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C : how to convert RTP packet to .raw file

I'm student and i'm working on a project on VOIP to capture communication VOIP and then to convert itinto audio format. I'm using with C programming language I am able to capture network traffic and filter RTP packets with winpcap library. But i…
YUYA FRANCIS
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Sniffing trunked IAX2 traffic

Is there any way to sniff trunked IAX2 trafic. I make search in google but it's all about sip and rtp. I make test with wireshark but "Telephony tools" doesn't work correctly with IAX2 as you see in the picture below:
Y. Dabbous
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why jmf can't play rtp stream?

I produced an rtp link with ffmpeg and I tried to listen and play this stream. VLC and ffmpeg can play rtp stream, both work well but jmf doesn't. Although there is no any error, jmf doesn't play rtp stream and there is no sound. My rtp stream…
ahmet burak
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Transmit Audio/Music Between Phones

I have peculiar request where I need to transmit audio between Cisco IP phones when they are on a call. The reason I am doing this is so that I can get call quality reports for determining audio quality of a call. However, I am absolutely stuck…
curry warrior
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what is the rtp payload value for amr-nb codec?

I found Rtp payload values for PCMU=0 and G729=18 etc.But I cant find value for AMR.I search in this link Rtp_parameters
Nidhin
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Why my App cannot decode the RTSP stream?

I use live555 to receive RTP video frame (frame encoded in H264). I use Live555 open my local .sdp file to receive frame data. I just saw DummySink::afterGettingFrame was called ceaselessly。 if fReceiveBuffer in DummySink is correct, Why…
MathxH Chen
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FFmpeg (avconv) rtp stream, how to attach sdp file?

I have a rtp live stream whit h.254 video, I want to copy it to file I use: avconv -i rtp://@192.168.0.34:60005 -an -acodec copy -vcodec copy abc.mp4 But I have an error: [rtp @ 0x1f6cfe0] Unable to receive RTP payload type 96 without an SDP file…
novox
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SIP RTP Stack for IVR Application

I have an IVR application which plays the prompts and records the user message and detects the DTMF. Currently the application is based on SS7 signaling and uses the PSTN based media boards for media play / record functionality. Now I have to move…
GJ.
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I want to upload a camera video stream to Amazon S3 and download it to an Android phone. I'm completely new to this. How can I do this?

I'm really dumb and new to RTP/SIP. Is there a stack that's recommended for uploading video to the cloud from a camera attached to a microprocessor? What's the difference between all the things I'm seeing - MPEG DASH, Live555, ffmpeg, and so…
jwu
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How to add RTP (Audio/Video stream) to an initiated SIP call (using JAIN)

I have devised a piece of code to dial a SIP client (linphone) using JAIN SIP but i want to add video/audio streams to complete the task of a video call. -I want it to be in the same class -And to make the code simple since i am using it in…
user3215614
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Huawei 9000 HD Video Terminal

I'm trying to make Huawei 9000 HD Video Terminal MCU work with asterisk. Huawei's mcu do not transmit any h264 video and refuses to play the video asterisk sends to it. Sniffing with wireshark I saw the entire sip negotiation ( relevant traces below…
danflu
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WEB based application with desktop integration - technologies?

This is a general question concerning technology decisions for a product development. My aim is to develop a web based remote support (desktop sharing application) with audio and video communication. My ideal solution would be to develop it as web…
cubesoft
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Dealing with Microphone and Speakers using C#

I need to make a voice chat using RTP multicast protocol ,So i need a C# dll library that can deal with speakers and microphone to get the user sound and send it over the network. Recommend to be simple and very simple library with simple example…
user2431952
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Create a live RTP stream from images

i want to create a live video streaming via RTP (and using crmtpserver as RTMP server to stream), starting from normal jpeg images, in my own C++ application. I was looking to the documentation of ffmpeg, libavutils and gstreamer but i couldn't find…
madduci
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