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• Pipe video and audio to ffmpeg from OpenRTSP

  1er avril 2016, par Haris

  I am trying to record rtsp stream in HLS format using openRTSP and ffmpeg. openRTSP receives rtsp and pipe to ffmpeg to record,

  Here is the command I used and which works fine

  openRTSP -D 10 -v -t -c -b 800000 rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov | .././ffmpeg -r 15 -i - -codec copy -hls_list_size 65535 -hls_time 2 "./live.m3u8"

  Note in above commnad -v is for video only.

  But now I need to record audio also so I removed -v option, but the video is not getting recorded. It’s just creating two files named
  audio-MPEG4-GENERIC-1 and video-H264-2 no HLS video file. I think some problem with piping. Can anyone help me to solve it.

• lavfi/scale : allocate interlaced scalers only if needed.

  18 juillet 2013, par Nicolas George

  lavfi/scale : allocate interlaced scalers only if needed.
  Fix "Value 0.000000 for parameter ’srch’ out of range"
  
  error message when source or destination height is 1.
  Note : since the av_opt_set_int() calls are not checked for
  
  failure and the interlaced scalers are not actually used,
  
  this error has no consequence apart from a frightening message
  
  in the log.
  

  • [DH] libavfilter/vf_scale.c

• How to show Images from a video as preview for playlist

  1er février 2017, par Guruprasad Rao

  You guys Have seen Youtube right. There while you are watching a video, You will also get related videos preview alongwith link. So how we can get it from video itself.. Is it possible to do so.. I am able to get the url from database and display it.. and when the link is clicked it will be played in a jquery player.. So before that a preview of that or you can say playlist of that will be available for user.

  I have updated my code with a link I found.. But still I am not able to get the Image from Video.. Is there anything wrong in my code.. Please correct me if I am wrong..

  Below is my front end code :

  <form runat="server">
  
      <div runat="server" style="height:100%;width:100%">
  
          <div>Latest Videos</div>
  
  
  
      </div>
  
  
  
      </form>

  and I am adding all my video links from backend on page load as shown below :

     try
  
      {
  
          con.Open();
  
          com = new SqlCommand("Select videourl, videoname from video order by [vid] desc",con);
  
          DbDataReader dr = com.ExecuteReader();
  
          DataTable dt = new DataTable();
  
  
  
          if (dr.HasRows)
  
          {
  
  
  
              int i = 0;
  
              dt.Load(dr);
  
              int rows = dt.Rows.Count;
  
  
  
  
  
              for (i = 0; i < rows; i++)
  
              {
  
                  HtmlGenericControl d = new HtmlGenericControl("div");
  
                  HtmlGenericControl s = new HtmlGenericControl("span");
  
                  string[] link = new string[rows];
  
                  string[] name = new string[rows];                    
  
  
  
                  d.Attributes.Add("class", "plst");
  
                  s.Attributes.Add("class", "text");
  
                  link[i] = dt.Rows[i]["videourl"].ToString();
  
                  name[i] = dt.Rows[i]["videoname"].ToString();
  
                  string videothumb = link[i];
  
                  string svthto="**Path to save Image**";
  
                  string imgpath=GetVideoThumbnail(videothumb, svthto, 30);
  
  
  
                  sb.Append("<a i="i" href=" + " class=" + ">" + name[i] + "</a>");
  
                  s.InnerHtml = sb.ToString();
  
                  d.Controls.Add(s);
  
                  examples.Controls.Add(d);
  
                  sb.Clear();
  
  
  
  
  
              }
  
          }
  
  
  
  
  
      }
  
      catch(Exception ex)
  
      {
  
          ex.Message.ToString();
  
      }
  
  
  
  public string GetVideoThumbnail(string path, string saveThumbnailTo, int seconds)
  
  {
  
      string parameters = string.Format("-ss {0} -i {1} -f image2 -vframes 1 -y {2}", seconds, path, saveThumbnailTo);
  
      string pathToConvertor = "C:\\Program Files\\ffmpeg\\ffmpeg.exe";
  
      var processInfo = new ProcessStartInfo();
  
      processInfo.FileName = pathToConvertor;
  
      processInfo.Arguments = parameters;
  
      processInfo.CreateNoWindow = true;
  
      processInfo.UseShellExecute = false;
  
  
  
      File.Delete(saveThumbnailTo);
  
  
  
      using (var process = new Process())
  
      {
  
          process.StartInfo = processInfo;
  
          process.Start();
  
          process.WaitForExit();
  
      }
  
  
  
      if (File.Exists(saveThumbnailTo))
  
          return saveThumbnailTo;
  
      else
  
          return "File not Found";
  
  }

  and here is the image of what I am getting until now :
  

  Please note : I am not concentrating on you tube videos. I am questioning regarding the videos which I store in server side folder. So if there is any jquery technique or any sort of technique to do this then please let me know. :)