[NEW] Download File Video Streaming Portal V1.3 Nulle...
Step 1: video clientThe video client initiates the RTSP DESCRIBE and signals to the Axis device to prepare video streaming with the specified streaming parameters given in the RTSP URL and to share its corresponding Session Description Protocol (SDP) file, which includes information about how to decode the video stream.
Download File Video Streaming Portal v1.3 Nulle...
Always multicast is not a network multicast mode but a specific adaption to video clients that are not capable of performing a proper RTSP and/or multicast setup in either of the ways described previously (i.e. via ASM or SSM). In always multicast mode, the Axis device is statically configured to stream video to a specific multicast address and port, and also to start streaming to it directly, regardless if there are video clients in the network that are actually requesting video from that particular Axis device or not. On top of that, RTSP is not used to connect, instead the requesting video client will make a HTTP call to retrieve the Session Description Protocol (SDP) file in order to understand and make the connection to the multicast address and port where the video stream is connected. Always multicast can be configured in Axis devices in Plain Config > Network for each individual video source.
Example 2: The device will stream video to the multicast address 18.104.22.168 to port 50000, and audio to multicast address 22.214.171.124 to port 51000. Observe that it is also possible to adjust the video streaming parameters in the always multicast profile. If other streaming parameters should be used, e.g. a framerate of 15 frames per second and compression of 15, then the field can be adjusted in the following way: videocodec=h264&fps=15&compression=15. Otherwise the current configured default stream settings will be used.
Once the above settings are saved, the Axis device will start streaming to the configured multicast address and port immediately regardless if there are clients requesting the video stream or not. The client can access this multicast stream via the SDP file, which determines the video stream settings so that the video client learns how to play the video. The SDP file can be accessed using -address/axis-cgi/alwaysmulti.sdp?camera=1 where camera=1 is mapped to R0. An example of such an SDP file can be found via alwaysmulti.sdp. Below is a network trace example illustrating the procedure.
Step 1: video clientThe video client has requested the SDP file from the Axis device. Observe that no streaming parameters or multicast network parameters are mentioned by the client, hence this configuration must be performed on the Axis device prior to making the request as described in the previous examples.
*In VLC, you may need to enable "Force multicast RTP via RTSP" in the RTP/RTSP/SDP demuxer settings under Advanced Preferences.**In order for FFMPEG and VLC to access and retrieve the SDP file via HTTP-authentication, the HTTP-basic authentication has to be configured in Plain Config > Network > Authentication policy.***These examples illustrate how a video client is capable of connecting to the multicast stream just by using the file SDP alone without making any further connection to the Axis device. Assuming that no configuration change is made on the Axis device, the user is only required to download the SDP file once and then one could use the SDP to start playing the video. VLC and FFMPEG are exmaples of clients that are capable of doing so.
In this section you can read about different ways to receive timestamp information when streaming video and downloading single images from Axis devices. This metadata information can be used for processing in business applications, e.g. when receiving metadata about how many persons in a store went through a certain area. It can also be used in other use cases where time-synchronisation towards 3rd party video clients is needed
Imagine that the network in Figure 1 is an ordinary (non-QoS aware) network. In this example, PC1 is watching two surveillance video streams from cameras Cam1 and Cam2, with each camera streaming at 2.5 Mbps. Suddenly, PC2 starts a file transfer from PC3. In this scenario the file transfer will try to use the full 10 Mbps capacity between the routers R1 and R2, whilst the video streams will try to maintain their total of 5 Mbps. We can no longer guarantee the amount of bandwidth given to the surveillance system and the video frame rate will probably be reduced. At worst, the FTP traffic will consume all the available bandwidth.
Hello everyone, a contribution for those who want to use the video streaming portal scripts and it causes the annoying 404 public / install, here is the solution:-------------------------------------------------- -----------1. after install completed
A new tracks API on assets allows you to list available tracks inside of an asset. This allows you to discover the available audio, video, and text tracks stored in an asset.The tracks API allows you to late-bind caption and subtitle files in IMSC1 text profile and WebVTT format to your streaming assets. In the past, customers needed to modify the .ism file in the blob storage account to add new late-bound tracks to their assets. This replaces that manual task and provides a supported SDK route to enable the addition of late-bound subtitle and caption files. 041b061a72