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• How do I live transcode a wmv file for playback in html5 player ?

  14 octobre 2018, par steven

  I’ve been working at this for quite awhile and still haven’t found a solution that works. I need a way to live convert (transcode) a .wmv file for playback in a html5 web player.

  I have a linux server (Apache) setup to stream video files through an html5 web player (Video.js) designed for Chrome and Firefox browsers. The file types I am dealing with are .mp4 (H.264), .mkv, and .wmv. The good news for me is that I can deal with mp4 and mkv natively, however I can’t play wmv. Also, I have to deal with a lot of files, change periodically, and can be quite large.

  After doing a lot of research and reading many times how you can’t stream wmv directly, I came to the realization that I had two options. Either convert the file to a supported format or live transcode a file for use in the web player. Due to the amount of files and their size (and periodically changing) converting the file is simply not feasible. So I am stuck with live streaming/transcoding. I figured ffmpeg would be the way to go, but I have yet to figure out how to get ffmpeg to live stream into the html5 player.

  So how do I take an existing .wmv file and live stream it in an html5 player ?

  The things I’ve tried so far :

  Tried creating a m3u8 playlist and hoping it would magically work.

  ffmpeg -i "hello.wmv" -s 640x480 -c:v libx264 -f ssegment -hls_flags delete_segments -segment_list playlist.m3u8 -segment_list_type hls -segment_list_size 10 -segment_list_flags +live -segment_time 10 out_%6d.ts

  Simply copying to mp4 and streaming while ffmpeg still progressing. Obviously didn’t work.

  ffmpeg -i "hello.wmv"  -vcodec copy video.mp4

  Converting to webm format and streaming webm while ffmpeg still progressing. This actually did show the video for a few seconds in the html player :

  ffmpeg -i "hello.wmv" -codec:a libvorbis -codec:v libvpx -b:a 128k -b:v 1200k video.webm

  Ffmpeg is not required to be used (was thinking of vlc as well), the html5 player is required. Completely converting then streaming isn’t a viable option because file sizes can be too large and change periodically. What command/program can I use to stream the file for playback in the html player ?

• 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

• How to encode Live Streaming using NReco.VideoConverter ?

  11 janvier 2016, par Siva Prasanna

  I’m developing an application to encode a live stream using NReco.VideoConverter component. I’m getting a live video stream from one of my IP cameras, and it uses rtsp. The url is "rtsp ://test.vaprtech.com/vid/show.sav ?[PARAMETERS]". Now the code I use is given below.

  private void button1_Click(object sender, EventArgs e)
  
  {
  
          String path="rtsp://test.vaprtech.com/vid/show.sav?[PARAMETERS]";
  
          String pathToSave="C:\\Videos\\LiveVideo.mp4";
  
          var ffMpeg = new NReco.VideoConverter.FFMpegConverter();
  
          ConvertLiveMediaTask task=ffMpeg.ConvertLiveMedia(path, Format.mp4, pathToSave, Format.mp4, new ConvertSettings(){VideoCodec="h264"});
  
          task.Start();
  
  }

  But I’m getting an error saying

  "The best overloaded method match for
  ’...ConvertLiveMedia(string,string,System.IO.Stream,string,ConvertSettings)’
  has some invalid arguments".