Recherche avancée

Sur d’autres sites (8584)

• aarch64 : vp9itxfm16 : Avoid .irp when it doesn’t save any lines

  25 février 2017, par Martin Storsjö

  aarch64 : vp9itxfm16 : Avoid .irp when it doesn’t save any lines
  This makes the code a bit more readable.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavcodec/aarch64/vp9itxfm_16bpp_neon.S

• Save several .ts files in one container, while preserving direct http access

  16 mars 2017, par SebastianB

  For HLS-video-streaming I have several .ts files and a .m3u8 playlist-file on my ftp-server. The .m3u8 file links relative to these .ts files. Because I’m now implementing a more advanced data management on distributed servers and a hashed folder structure, it would be most convinient if these .ts files would stay at the same place in one kind of "container"(e.g. .mp4 ?).

  Is there a way to save several .ts files in another file structure which is then still accessible for the video player directly via http? E.g. http://example.com/container.mp4:video1.ts and the next .ts file like http://example.com/container.mp4:video2.ts ?

  Obviously this access should be possible without loading/unpacking the whole "container". Furthermore it would be even more convinient, if the .m3u8 file would be saved in this "container" as well.

• C# Streaming from IP Camera and save to file in UWP Windows 10

  2 mars 2017, par cahernanz

  I am developing an universal windows 10 App that must record from an ACTi ip camera, and recording to file. For the preview i used VLC.MediaElement and it works perfectly, but i need to record or save this continuous frames to video file. Anyone knows how saving it to file. Cameras streams using http protocol, not RTSP or anything else.

  it doesnt mind if I use VLC of FFMPEG, but I can´t launch it from cmd.exe in UWP apps.

  any ideas ?.

  I used VLC.MediaElement this way. For the Preview there is no problem :

   
  
              
  
                  
  
              
  
          
  
          <mediaelement aretransportcontrolsenabled="True" autoplay="True" horizontalalignment="Left" height="204" margin="38,44,0,0" verticalalignment="Top" width="212"></mediaelement>

  But I think I can´t recod using it becausa probably is under developing.

  My idea is creating something like that, but it doesnt work streaming continuously, just the first frame.

    public async void StartRecording()
  
      {
  
          Windows.Storage.StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
  
  
  
          Debug.WriteLine(storageFolder.Path);   
  
  
  
          Windows.Storage.StorageFile sampleFileVid =
  
  await storageFolder.CreateFileAsync(DateTime.Now.ToString("yyyyMMdd") + "File.avi",
  
  Windows.Storage.CreationCollisionOption.OpenIfExists)
  
  
  
  
  
  
  
  VLCPreview.Source = "http://Admin:123456@192.168.0.21:6021/cgi-bin/cmd/encoder?GET_STREAM";
  
  
  
  
  
  
  
  
  
          try
  
          {
  
                              HttpClientHandler aHandler = new HttpClientHandler();
  
                              aHandler.Credentials = new NetworkCredential("Admin", "123456");
  
                              aHandler.ClientCertificateOptions = ClientCertificateOption.Automatic;
  
  
  
                              HttpClient aClient = new HttpClient(aHandler);
  
                              aClient.DefaultRequestHeaders.ExpectContinue = false;
  
  
  
                              HttpResponseMessage response = await aClient.GetAsync("http://192.168.0.21:6021/cgi-bin/cmd/encoder?GET_STREAM", HttpCompletionOption.ResponseHeadersRead);//urlLinkToOnlineStream
  
  
  
  
  
                              var destinationFile = sampleFileVid;
  
                              var fileStream = await destinationFile.OpenAsync(FileAccessMode.ReadWrite);
  
  
  
                              Stream stream = await response.Content.ReadAsStreamAsync();
  
                               IInputStream inputStream = stream.AsInputStream();
  
                               ulong totalBytesRead = 0;
  
                               while (true)
  
                               {
  
                                   // Read from the web.
  
                                   IBuffer buffer = new Windows.Storage.Streams.Buffer(1024);
  
                                   buffer = await inputStream.ReadAsync(buffer, buffer.Capacity, InputStreamOptions.None);
  
                                   if (buffer.Length == 0)
  
                                   {
  
                                       break;
  
                                   }
  
                                   totalBytesRead += buffer.Length;
  
                                   await fileStream.WriteAsync(buffer);
  
                                  Debug.WriteLine("TotalBytesRead: {0:f}", totalBytesRead);
  
                              }
  
  
  
                              inputStream.Dispose();
  
  
  
                              fileStream.Dispose();  
  
  
  
          }
  
          catch (Exception ex)
  
          {
  
              Debug.WriteLine("Excepción de vídeo en StartRecording: ", ex);
  
          }
  
      }

  I am trying to follow 3 strategies :

  1. Record using appropiate c# code.

  2. Launche vlc.exe or ffmpeg.exe (desktop apps) from my uwp app.

  3. Using VLC.MediaElement to record.

  I’d rather first or second option in order to manage correctly the resources of the computer, but there is no problem if it works, just custom the buffers.

  Thanks in advance, remember it is an ip camera, not webcams, I can´t use captureElement.