What Is Rtp

The Real-time Transport Protocol (RTP), defined in RFC 3550, is an IETF standard protocol to enable real-time connectivity for exchanging data that needs real-time priority. This article provides an overview of what RTP is and how it functions in the context of WebRTC.

Note: WebRTC actually uses SRTP (Secure Real-time Transport Protocol) to ensure that the exchanged data is secure and authenticated as appropriate.

The Regional Transportation Plan (RTP) is a long-range planning document that defines how the region plans to invest in the transportation system over 20+ years based on regional goals, multi-modal transportation needs for people and goods, and estimates of available funding. The RTP includes a Sustainable Communities Strategy as required by SB. Real-Time Payments for All Financial Institutions The RTP® network from The Clearing House is a real-time payments platform that all federally insured U.S. Depository institutions are eligible to use for payments innovation. Rtp Our Park Located at the geographic center of three Tier-1 research universities, RTP is the largest research park in the United States and a premier global innovation center.

Keeping latency to a minimum is especially important for WebRTC, since face-to-face communication needs to be performed with as little latency as possible. The more time lag there is between one user saying something and another hearing it, the more likely there is to be episodes of cross-talking and other forms of confusion.

Key features of RTP

Before examining RTP's use in WebRTC contexts, it's useful to have a general idea of what RTP does and does not offer. RTP is a data transport protocol, whose mission is to move data between two endpoints as efficiently as possible under current conditions. Those conditions may be affected by everything from the underlying layers of the network stack to the physical network connection, the intervening networks, the performance of the remote endpoint, noise levels, traffic levels, and so forth.

Since RTP is a data transport, it is augmented by the closely-related RTP Control Protocol (RTCP), which is defined in RFC 3550, section 6. RTCP adds features including Quality of Service (QoS) monitoring, participant information sharing, and the like. It isn't adequate for the purposes of fully managing users, memberships, permissions, and so forth, but provides the basics needed for an unrestricted multi-user communication session.

The very fact that RTCP is defined in the same RFC as RTP is a clue as to just how closely-interrelated these two protocols are.

Capabilities of RTP

RTP's primary benefits in terms of WebRTC include:

What Is Rtp Tax

  • Generally low latency.
  • Packets are sequence-numbered and time-stamped for reassembly if they arrive out of order. This lets data sent using RTP be delivered on transports that don't guarantee ordering or even guarantee delivery at all.
  • This means RTP can be — but is not required to be — used atop UDP for its performance as well as its multiplexing and checksum features.
  • RTP supports multicast; while this isn't yet important for WebRTC, it's likely to matter in the future, when WebRTC is (hopefully) enhanced to support multi-user conversations.
  • RTP isn't limited to use in audiovisual communication. It can be used for any form of continuous or active data transfer, including data streaming, active badges or status display updates, or control and measurement information transport.

Things RTP doesn't do

RTP itself doesn't provide every possible feature, which is why other protocols are also used by WebRTC. Some of the more noteworthy things RTP doesn't include:

Editor's note

we should add information about where these deficiencies are compensated for, if they are at all.

What
  • RTP does not guarantee quality-of-service (QoS).
  • While RTP is intended for use in latency-critical scenarios, it doesn't inherently offer any features that ensure QoS. Instead, it only offers the information necessary to allow QoS to be implemented elsewhere in the stack.
  • RTP doesn't handle allocation or reservation of resources that may be needed.

Where it matters for WebRTC purposes, these are dealt with in a variety of places within the WebRTC infrastructure. For example, RTCP handles QoS monitoring.

RTCPeerConnection and RTP

Each RTCPeerConnection has methods which provide access to the list of RTP transports that service the peer connection. These correspond to the following three types of transport supported by RTCPeerConnection:

RTCRtpSender
RTCRtpSenders handle the encoding and transmission of MediaStreamTrack data to a remote peer. The senders for a given connection can be obtained by calling RTCPeerConnection.getSenders().
RTCRtpReceiver
RTCRtpReceivers provide the ability to inspect and obtain information about incoming MediaStreamTrack data. A connection's receivers can be obtained by calling RTCPeerConnection.getReceivers().
RTCRtpTransceiver
An RTCRtpTransceiver is a pair of one RTP sender and one RTP receiver which share an SDP mid attribute, which means they share the same SDP media m-line (representing a bidirectional SRTP stream). These are returned by the RTCPeerConnection.getTransceivers() method, and each mid and transceiver share a one-to-one relationship, with the mid being unique for each RTCPeerConnection.

Leveraging RTP to implement a 'hold' feature

Because the streams for an RTCPeerConnection are implemented using RTP and the interfaces above, you can take advantage of the access this gives you to the internals of streams to make adjustments. Among the simplest things you can do is to implement a 'hold' feature, wherein a participant in a call can click a button and turn off their microphone, begin sending music to the other peer instead, and stop accepting incoming audio.

Note: This example makes use of modern JavaScript features including async functions and the await expression. This enormously simplifies and makes far more readable the code dealing with the promises returned by WebRTC methods.

In the examples below, we'll refer to the peer which is turning 'hold' mode on and off as the local peer and the user being placed on hold as the remote peer.

Activating hold mode

Local peer

When the local user decides to enable hold mode, the enableHold() method below is called. It accepts as input a MediaStream containing the audio to play while the call is on hold.

The three lines of code within the try block perform the following steps:

  1. Replace their outgoing audio track with a MediaStreamTrack containing hold music.
  2. Disable the incoming audio track.
  3. Switch the audio transceiver into send-only mode.

This triggers renegotiation of the RTCPeerConnection by sending it a negotiationneeded event, which your code responds to generating an SDP offer using RTCPeerConnection.createOffer and sending it through the signaling server to the remote peer.

The audioStream, containing the audio to play instead of the local peer's microphone audio, can come from anywhere. One possibility is to have a hidden <audio> element and use HTMLAudioElement.captureStream() to get its audio stream.

Remote peer

On the remote peer, when we receive an SDP offer with the directionality set to 'sendonly', we handle it using the holdRequested() method, which accepts as input an SDP offer string.

The steps taken here are:

  1. Set the remote description to the specified offer by calling RTCPeerConnection.setRemoteDescription().
  2. Replace the audio transceiver's RTCRtpSender's track with null, meaning no track. This stops sending audio on the transceiver.
  3. Set the audio transceiver's direction property to 'recvonly', instructing the transceiver to only accept audio and not to send any.
  4. The SDP answer is generated and sent using a method called sendAnswer(), which generates the answer using createAnswer() then sends the resulting SDP to the other peer over the signaling service.

Deactivating hold mode

Local peer

When the local user clicks the interface widget to disable hold mode, the disableHold() method is called to begin the process of restoring normal functionality.

This reverses the steps taken in enableHold() as follows:

  1. The audio transceiver's RTCRtpSender's track is replaced with the specified stream's first audio track.
  2. The transceiver's incoming audio track is re-enabled.
  3. The audio transceiver's direction is set to 'sendrecv', indicating that it should return to both sending and receiving streamed audio, instead of only sending.

Just like when hold was engaged, this triggers negotiation again, resulting in your code sending a new offer to the remote peer.

Remote peer

When the 'sendrecv' offer is received by the remote peer, it calls its holdEnded() method:

The steps taken inside the try block here are:

  1. The received offer is stored as the remote description by calling setRemoteDescription().
  2. The audio transceiver's RTCRtpSender's replaceTrack() method is used to set the outgoing audio track to the first track of the microphone's audio stream.
  3. The transceiver's direction is set to 'sendrecv', indicating that it should resume both sending and receiving audio.

From this point on, the microphone is re-engaged and the remote user is once again able to hear the local user, as well as speak to them.

See also

RTP is a system for reducing the total size of a game file made with RPG Maker. RTPs contain the graphics, music, and .dll files used when creating a game. Once a game is made with RTP data, you do not need to include material data like music or graphic files. This significantly reduces the file size of the game.

If RTP has been installed, material files needed for the game will already be on your hard drive. With RTP installed only a minimal amount of data is needed to download and play a game.

If RTP is not installed you will need to download material data for the game as well a game itself. This will make the game file much larger than it needs to be. You can't use the program without RTP

Start by selecting your program.

1. Save the file (RPGVXAce_RTP.zip) on your local hard drive.
2. Find the downloaded file, right-click it and select Extract All.
3. Click Extract.
4. Open RTP100 folder and run Setup.exe to install RPG Maker VX Ace Runtime Package.
5. Click Next.
6. The Runtime Package will be installed. Click Next.
7. Click Install. It starts copying the necessary files, please wait a while.

RPG MAKER VX ACE RUNTIME PACKAGE VER. 1.00 END USER LICENSE AGREEMENT

WHAT IS RPG MAKER VX ACE RUNTIME PACKAGE?

RPG MAKER VX Ace Runtime Package (RTP) is a collection of materials. It contains graphic, music (.ogg) and dll files which you can use when creating your own games with RPG MAKER VX Ace. So please ensure to install this RTP before you install RPG MAKER VX Ace. Using this RTP, you can reduce the total size of your game files created with VX Ace. If you want to play the games created with VX Ace, you need to install this RTP before you play the games.

RPG MAKER VX ACE RUNTIME PACKAGE - END USER LICENSE AGREEMENT (MAR. 15TH, 2012)

THIS END USER LICENSE AGREEMENT (THE 'AGREEMENT') IS A LEGALLY BINDING CONTRACT BETWEEN YOU, THE END-USER (THE 'LICENSEE') AND ENTERBRAIN,INC. ('ENTERBRAIN' OR 'LICENSOR'). BY INSTALLING OR USING 'RPG MAKER VX ACE RUNTIME PACKAGE' (THE 'RTP SOFTWARE'), YOU, THE LICENSEE, ARE AGREEING TO BE BOUND BY THE TERMS AND CONDITIONS OF THIS AGREEMENT. READ THE TERMS AND CONDITIONS OF THIS AGREEMENT CAREFULLY BEFORE INSTALLING OR USING THE RTP SOFTWARE. IF YOU DO NOT AGREE TO THE TERMS, CONDITIONS AND LIMITATIONS OF THIS AGREEMENT, PROMPTLY DELETE THE RTP SOFTWARE FROM YOUR COMPUTER.

  1. ENTERBRAIN grants to Licensee a non-exclusive, non-assignable, fee-free license to use the RTP SOFTWARE only for the purpose to play the game created and distributed by RPG MAKER VX Ace users who shall complete the registration procedure.
  2. Licensee shall not reverse engineer, de-compile, or disassemble the RTP SOFTWARE. Further, Licensee shall not sell, distribute, assign, lease, sublicense, encumber, or otherwise transfer the RTP SOFTWARE and/or its data without any prior written consent of ENTERBRAIN.
  3. This Agreement and the license granted hereunder automatically terminates if Licensee breaches any provision of this Agreement. Immediately upon termination of this Agreement, Licensee shall cease using the RTP SOFTWARE, shall delete the RTP SOFTWARE from its computers and shall either return to ENTERBRAIN or destroy the RTP SOFTWARE. If Licensee elects to destroy the RTP SOFTWARE, then Licensee shall certify in writing to ENTERBRAIN the destruction of the RTP SOFTWARE.
  4. ENTERBRAIN does not warrant that the RTP SOFTWARE will meet Licensee's requirements, that the RTP SOFTWARE will operate in combinations other than as specified in the Documentation, that the operation of the RTP SOFTWARE will be uninterrupted or error-free or that RTP SOFTWARE errors will be corrected. ENTERBRAIN HEREBY DISCLAIMS ANY AND ALL REPRESENTATION AND WARRANTIES IN ANY MANNER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  5. IN NO EVENT SHALL ENTERBRAIN BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES, OR DAMAGES FOR LOSS OF PROFITS, REVENUE, DATA OR USE, INCURRED BY LICENSEE OR ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. ENTERBRAIN'S LIABILITY FOR DAMAGES AND EXPENSES HEREUNDER OR RELATING HERETO (WHETHER IN AN ACTION IN CONTRACT OR TORT) WILL IN NO EVENT EXCEED THE AMOUNT OF LICENSE FEES PAID TO ENTERBRAIN WITH RESPECT TO THIS AGREEMENT.
  6. This Agreement constitutes the complete agreement between the parties and supersedes all prior or contemporaneous agreements or representations, written or oral, concerning the subject matter of this Agreement.
  7. This Agreement will be interpreted and enforced in accordance with the laws of Japan without regard to choice of law principles. Any and all dispute arising out of or in connection with this Agreement shall solely be resolved by and at Tokyo District court, Tokyo, Japan.

Note for using VX Ace RTP with other RPG MAKER products.

The materials included in RPG MAKER VX Ace RTP can be used with other RPG MAKER products from Enterbrain as long as you own both RPG MAKER VX Ace and other RPG MAKER products. For example, if you already own RPG MAKER VX and you want to use any materials included in the VX Ace RTP with RPG MAKER VX, you need to purchase and own RPG MAKER VX Ace also.

(C) 2012 ENTERBRAIN, INC./YOJI OJIMA

Microsoft(R), Windows(R), Windows Vista(R), DirectX(R) are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

All other trademarks or registered trademarks are the property of their respective owners.

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1. Click on the link to download a compressed version of RPG MAKER VX RTP.
2. Once the file has downloaded, unzip it and a 'RPGVX_RTP' folder will be automatically created.
3. Open up the folder and double click on 'Setup.Exe'. Setup for 'RPG MAKER VX Runtime Package' will start automatically.
4. Once setup for 'RPG Maker VX RunTime Package' has started, follow the instructions that appear on the screen to advance. If no destination folder for 'RunTime Package' is specified, simply click the 'Next' button until the installation wizard completes its tasks.

ON-CLICK LICENSE AGREEMENT FOR RPG MAKER RUNTIME PACKAGE 08.02.29

IMPORTANT, READ CAREFULLY.

THIS END USER LICENSE AGREEMENT (THE 'AGREEMENT') IS A LEGALLY BINDING CONTRACT BETWEEN YOU, THE END-USER (THE 'LICENSEE') AND ENTERBRAIN,INC.

('ENTERBRAIN' OR 'LICENSOR') BY INSTALLING OR USING 'RPG MAKER XP RUNTIME PACKAGE' (THE 'RTP SOFTWARE'), YOU, THE LICENSEE, ARE AGREEING TO BE BOUND BY THE TERMS AND CONDITIONS OF THIS AGREEMENT.

READ THE TERMS AND CONDITIONS OF THIS AGREEMENT CAREFULLY BEFORE INSTALLING OR USING THE RTP SOFTWARE. IF YOU DO NOT AGREE TO THE TERMS, CONDITIONS AND LIMITATIONS OF THIS AGREEMENT, PROMPTLY DELETE THE RTP SOFTWARE FROM YOUR COMPUTER.

OWNERSHIP

ENTERBRAIN retains all title, copyright and other proprietary rights in, and ownership of, the RTP SOFTWARE. Licensee does not acquire any rights, express or implied, other than those expressly granted in this Agreement.

LICENSE

ENTERBRAIN grants to Licensee a non-exclusive, non-assignable, fee-free license to use the RTP SOFTWARE only for the purpose to play the GAME created and distributed by RPG MAKER VX users who shall complete the registration procedure.

RESTRICTION

Licensee shall not reverse engineer, de-compile, or disassemble the RTP SOFTWARE. Further, Licensee shall not sell, distribute, assign, lease, sublicense, encumber, or otherwise transfer the RTP SOFTWARE and/or its data without any prior written consent of ENTERBRAIN.

TERMINATION

This Agreement and the license granted hereunder automatically terminates if Licensee breaches any provision of this Agreement. Immediately upon termination of this Agreement, Licensee shall cease using the RTP SOFTWARE, shall delete the RTP SOFTWARE and Game from its computers and shall either return to ENTERBRAIN or destroy the RTP SOFTWARE. If Licensee elects to destroy the RTP SOFTWARE, then Licensee shall certify in writing to ENTERBRAIN the destruction of the RTP SOFTWARE.

LIMITED WARRANTIES AND DISCLAIMERS

ENTERBRAIN does not warrant that the RTP SOFTWARE will meet Licensee's requirements, that the RTP SOFTWARE will operate in combinations other than as specified in the Documentation, that the operation of the RTP SOFTWARE will be uninterrupted or error-free or that RTP SOFTWARE errors will be corrected. ENTERBRAIN HEREBY DISCLAIMS ANY AND ALL REPRESENTATION AND WARRANTIES IN ANY MANNER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

LIABILITY LIMITATION

IN NO EVENT SHALL ENTERBRAIN BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES, OR DAMAGES FOR LOSS OF PROFITS, REVENUE, DATA OR USE, INCURRED BY LICENSEE OR ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. ENTERBRAIN'S LIABILITY FOR DAMAGES AND EXPENSES HEREUNDER OR RELATING HERETO (WHETHER IN AN ACTION IN CONTRACT OR TORT) WILL IN NO EVENT EXCEED THE AMOUNT OF LICENSE FEES PAID TO ENTERBRAIN WITH RESPECT TO THIS AGREEMENT.

ENTIRE AGREEMENT

This Agreement constitutes the complete agreement between the parties and supersedes all prior or contemporaneous agreements or representations, written or oral, concerning the subject matter of this Agreement.

What Is Rtpm

GOVERNING LAW AND JURISDICTION

This Agreement will be interpreted and enforced in accordance with the laws of Japan without regard to choice of law principles. Any and all dispute arising out of or in connection with this Agreement shall solely be resolved by and at Tokyo District court, Tokyo, Japan.

‍

1. Click on the link above to RPG Maker XP RTP.
2. Once the file has downloaded, double click on it.
3. Once setup for “RPG Maker XP Run Time Package” has started, follow the instructions that appear on the screen to advance. If no destination folder for “Run Time Package” is specified, simply click the “Next” button until the installation wizard completes its tasks.

ON-CLICK LICENSE AGREEMENT FOR RPG MAKER RUNTIME PACKAGE 05.10.8

IMPORTANT, READ CAREFULLY.

THIS END USER LICENSE AGREEMENT (THE “AGREEMENT”) IS A LEGALLY BINDING CONTRACT BETWEEN YOU, THE END-USER (THE “LICENSEE”) AND ENTERBIRAN,INC. (“ENTERBRAIN” OR “LICENSOR”) BY INSTALLING OR USING “RPG MAKER XP RUNTIME PACKAGE” (THE “RTP SOFTWARE”), YOU, THE LICENSEE, ARE AGREEING TO BE BOUND BY THE TERMS AND CONDITIONS OF THIS AGREEMENT.

READ THE TERMS AND CONDITIONS OF THIS AGREEMENT CAREFULLY BEFORE INSTALLING OR USING THE RTP SOFTWARE. IF YOU DO NOT AGREE TO THE TERMS, CONDITIONS AND LIMITATIONS OF THIS AGREEMENT, PROMPTLY DELETE THE RTP SOFTWARE FROM YOUR COMPUTER.

OWNERSHIP

ENTERBRAIN retains all title, copyright and other proprietary rights in, and ownership of, the RTP SOFTWARE. Licensee does not acquire any rights, express or implied, other than those expressly granted in this Agreement.

LICENSE

ENTERBRAIN grants to Licensee a non-exclusive, non-assignable, fee-free license to use the RTP SOFTWARE only for the purpose to play the GAME created and distributed by RPG MAKER XP users who shall complete the registration procedure.

Research Triangle Park

RESTRICTION

Licensee shall not reverse engineer, de-compile, or disassemble the RTP SOFTWARE. Further, Licensee shall not sell, distribute, assign, lease, sublicense, encumber, or otherwise transfer the RTP SOFTWARE and/or its data without any prior written consent of ENTERBRAIN.

TERMINATION

This Agreement and the license granted hereunder automatically terminates if Licensee breaches any provision of this Agreement. Immediately upon termination of this Agreement, Licensee shall cease using the RTP SOFTWARE, shall delete the RTP SOFTWARE and Game from its computers and shall either return to ENTERBRAIN or destroy the RTP SOFTWARE. If Licensee elects to destroy the RTP SOFTWARE, then Licensee shall certify in writing to ENTERBRAIN the destruction of the RTP SOFTWARE.

LIMITED WARRANTIES AND DISCLAIMERS

EENTERBRAIN does not warrant that the RTP SOFTWARE will meet Licensee’s requirements, that the RTP SOFTWARE will operate in combinations other than as specified in the Documentation, that the operation of the RTP SOFTWARE will be uninterrupted or error-free or that RTP SOFTWARE errors will be corrected. ENTERBRAIN HEREBY DISCLAIMS ANY AND ALL REPRESENTATION AND WARRANTIES IN ANY MANNER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

LIABILITY LIMITATION

IN NO EVENT SHALL ENTERBRAIN BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, PUNITIVE OR CONSEQUENTIAL DAMAGES, OR DAMAGES FOR LOSS OF PROFITS, REVENUE, DATA OR USE, INCURRED BY LICENSEE OR ANY THIRD PARTY, WHETHER IN AN ACTION IN CONTRACT OR TORT, EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. ENTERBRAIN’S LIABILITY FOR DAMAGES AND EXPENSES HEREUNDER OR RELATING HERETO (WHETHER IN AN ACTION IN CONTRACT OR TORT) WILL IN NO EVENT EXCEED THE AMOUNT OF LICENSE FEES PAID TO ENTERBRAIN WITH RESPECT TO THIS AGREEMENT.

ENTIRE AGREEMENT

What Is Rtp Detection

This Agreement constitutes the complete agreement between the parties and supersedes all prior or contemporaneous agreements or representations, written or oral, concerning the subject matter of this Agreement.

What Is Rtp Midi

GOVERNING LAW AND JURISDICTION

This Agreement will be interpreted and enforced in accordance with the laws of Japan without regard to choice of law principles. Any and all dispute arising out of or in connection with this Agreement shall solely be resolved by and at Tokyo District court, Tokyo, Japan.

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