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• Capturing and processing a live RTMP stream

  8 février 2018, par Yantor

  I’m trying to download a live stream (not a file) coming from a live camera feed available at the following website : http://www.dot.ca.gov/video/.

  I used Wireshark for sniffing the TCP packets and was able to extract the RTMP parameters, but wasn’t able to use them with FFMPEG/VLC for downloading / playing the stream on VLC (I guess I didn’t construct the URL correctly).

  for example, for the camera feed available here, I got the following parameters :

  swfUrl : http://www.dot.ca.gov/research/its/StrobeMediaPlayback.swf

  pageUrl : http://www.dot.ca.gov/d4/d4cameras/ct-cam-pop- N17_at_Saratoga_Rd.html

  tcUrl : rtmp ://wzmedia.dot.ca.gov:1935/D4
  Play : E37_at_Lakeville_Rd.stream.

  Is there a chance someone is familiar with this and can help with understanding how I can use the above for downloading the stream ?

  Thanks a lot ! Yaniv

• Is it possible to send a temporary slate (image or video) into a running Azure Live Event RTMP-stream ?

  15 novembre 2020, par Brian Frisch

  I'm currently building a video streaming app which leverages Azure Media Services Live Events.

  


  It consists of :

  


  

  1. a mobile app that can stream live video and.

  


  2. a web client that plays the live event video.

  


  3. a producer screen with controls to start and stop the web client access to the video.

  


  4. a server that handles various operations around the entire system

  


  


  It's working very well, but I would like to add a feature that would enable the producer to add some elegance to the experience. Therefore I'm trying to get my head around how I can enable the producer be able to switch the incoming source of the stream to a pre-recorded video or event a still image at any point during the recording, and also to switch back to live-video. A kill-switch of some kind, that would cover waiting-time if there's technical difficulties on the set, and it could also be used for pre-/post-roll branding slates when introing and outroing a video event. I would like this source switch to be embedded in the video stream (also so it would be possible to get this into the final video-product if I need it in an archive for later playback)

  


  I'm trying to do it in a way where the producer can set a timestamp for when the video override should come in, and when it should stop. The I want to have my server respond to these timestamps and send the instructions over RTMP to the Azure Live Event. Is it possible to send such an instruction ("Hey, play this video-bit/show this image in the stream for x-seconds") in the RTMP-protocol ? I've tried to figure it out, and I've read about SCTE-35 markers and such, but I have not been able to find any examples on how to do it, so I'm a bit stuck.

  


  My plan-B is to make it possible to stream an image from the mobile application that already handles the live video-stream, but I'm initially targeting an architecture where the mobile app is unaware of anything else than live streaming, and this override switch should preferably be handled by the server, which is a firebase functions setup.

  


  If you are able to see other ways of doing it, I'm all ears.

  


  I've already tried to build a ffmpeg method that listens to updates to the producer-set state, and then streams an image to the same RTMP-url that the video goes to from the mobile app. But it only works when the live video isn't already streaming - it seems like I cannot take over a RTMP-stream when it's already running.

  


• How to live stream video securely ?

  16 février 2018, par casper04

  I have an IP Camera which sends out a RTSP stream over UDP. On the same network I have an Intel Edison where I can send the stream to, to possibly convert the stream and make sure it’s sent securely. From the Edison I want to send the stream to a server, where the stream is stored and sent out to the client (a browser).

  Now I know that the best option to stream video on different browsers is HTTP Live Streaming, which means I should convert the stream to a format which is compatible with HLS. And as I understand it, this can be done with FFMPEG (which, I believe, also works on Yocto Linux, which is what is running on the Edison).

  What I don’t want however, is that the stream that I’m sending out can be easily watched by people who are not authorized. Therefore, I would like to either encrypt the stream (and decrypt it on the server), or send it over HTTPS. Is this possible, and if so, how ?