rtp

How to seek to a specific time in a RTP stream?

I am streaming a prerecorded H264 video that has the following structure: [I] [x] [x] [x] [I] [x] [x] [x] [I]... In between the IDR (I-s in my structure) I have 32 (only 3 presented here) other frames (all other stuff that is not IDR like SEI, SPS, PPS... X-es) Now, let assume that the timing of my frames is such: TIME: 1 2 3 ...

How does one capture H.323 voice traffic on a VOIP network?

What I am trying to do is capture the WAV data of a phone conversation on a VOIP network using SharpPCap/PCap.Net. We are using the H.323 recommendation and my understanding is that voice data is located in the RTP packets. However, there is no way to heuristically determine if a UDP packet is a RTP packet, so we have to do more work b...

Is there simple way to play an rtp video/audio stream in WPF?

I need to create a WPF control that will play an rtp stream with the requirement that the latency needs to be as low as possible. I've looked at the following two projects: http://vlcdotnet.codeplex.com/ http://wpfmediakit.codeplex.com/ As far as I know, I can't use VLC because we're shipping a commercial application with a more rest...

Using flash api to access WebCam in an ASP.NET application

Greetings, I'm trying to play with live web cam using asp.net with C#. I want to access/stream web cam content using flash then send the captured streams using Real-time Transport Protocol. How is possiable to do that? do you know any simple asp.net application related to this? ...

Can you recommend a solution to convert real time stream from pc camera to the format of rtp/rtsp?

I just walked through this thread, and found html5 video is fantastic. So now what I need to do is convert video streams from pc camera into rtp/rtsp format. Is there a good solution you recommend? ...

How to calculate an RTP Timestamp

Hi, I'm confuse with the RTP timestamp. With a PCMU file 8000hz 20ms it is 160Bytes. But, how can I calculate it for a L16Mono file with 44100Hz and also 20ms. VLC says the timestamp is 2205 and the packet size is 4410. Can anybody help me with this calculation? All regards St. ...

Streaming H.264 video via RTP from Live555 to VLC

Dear experts, I'll be enormously grateful if you can help me with an H264 streaming problem that I've been trying to solve for weeks. I need to stream H264 video from Live555 (on a Linux machine) to VLC Media Player (on a Windows machine). With RTSP it works very well, but I need to use RTP without RTSP, and with RTP I see no video. VL...

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 this application to IP based solution. For this, I need any open-source / low-cost solutio...

Java RTP/RTCP library using NIO

Hello All, Is there a Java RTP/RTCP library based on Java NIO or some Java NIO framework (Netty, MINA, ...)? ...

Corrupted audio payload

I am trying to stream a MP3 over the LAN using VLC Player(1.0.5.0), RTP multicast. On observation with wireshark in the receiving side,it interprets all the below fields: padding, extension, contributing source identifier count as 0, which means there are no additional byte after the first 12 bytes of fixed RTP header. But I could see ...

HTML5 and a sample RTP Stream?

Hi, I'm making a website in html5 that needs to play an rtp stream, but When I run it, I dont get anything, and I'm not sure if its my browser (safari 5), my rtp server, or the html code that is the problem. :P does anyone know of a sample rtp stream I could use to test the HTML and my browser? Thanks Beforehand! Cheers, Lukas ...

RTP packet combining

I have a bunch of RTP packets that I'd like to re-assemble into an audio stream. For each packet, I have the sequence number, SSRC, timestamp, and a byte array representing the data itself. Currently I'm taking each subset of packets by their SSRC, then ordering them by timestamp and combining the byte arrays in that order. Afterwards,...

Problem to Decode H264 video over RTP with ffmpeg (libavcodec)

I set profile_idc, level_idc, extradata et extradata_size of AvCodecContext with the profile-level-id et sprop-parameter-set of the SDP. I separate the decoding of Coded Slice, SPS, PPS and NAL_IDR_SLICE packet : Init: uint8_t start_sequence[]= {0, 0, 1}; int size= recv(id_de_la_socket,(char*) rtpReceive,65535,0); Coded Slice : cha...

How to decode array of bytes by G.729, G.723 etc ...?

I have an RTP connection, and i can extract all Payload parts and concat them to each other sequentially to a byte array. How can i decode this array?(suppose that i know the codec) Is there any library that implements voip codecs? Language: C# ...

Proper Java RTP/RTCP stack

Hello, I've been struggling to find a decent RTP stack implementation for Java. JMF or FMJ are not options here as I don't want all the bells and whistles of codecs and audio/video capture; I just need to create RTP streams, dump data in them and read data from them. I've been using jlibrtp https://wiki.cs.columbia.edu:8443/display/~hg...

any ipv6 idea, how to get the RTP streams with the ipv6. vlan apparently doesnot support .

Hello, Can you please help me with any ideas on generating the RTP streams with the ipv6 ? I have tried with vlan , no success/ even i donot mind, getting raw dump of this stream, i just need to test ... thankyou, Any help will be very much appreciated. Priya ...

Stream of example RTP packets

I am trying to tunnel RTP traffic through a user-defined protocol, and want to test this setup. Is there any C++ library, which I can use to generate example RTP packets and then tunnel them through my library? Thanks. ...

Anyone know of an open source RTP Server?

I specifically want to be able to stream Video. With the Server preferably implemented in Java, Python or Erlang? ...

New Payload type for RTP profile

I am designing a new RTP profile. How can I determine the next available RTP payload type, which I can assign to my profile type? ...

RTP RFC (3550) interpretation question.

I'm doing a Java implementation of RFC 3550 (RTP) and I've ran into a little problem: In chapter 11, paragraph 2, it states that: (...) A participant MUST NOT assume that the source port of the incoming RTP or RTCP packet can be used as the destination port for outgoing RTP or RTCP packets. When RTP data packets are being sent in b...