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• C# UWP Desktop Bridge start ffmpeg with command

  4 décembre 2019, par iNCEPTiON_

  I have a UWP Application which starts a WPF app and communicates via AppServiceConnection which works well,
  what I want to do is to start FFmpeg / FFplay with the command to play a video.

  The code in the WPF app for starting FFmpeg / FFplay via AppServiceConnection

  private void Connection_RequestReceivedAsync(AppServiceConnection sender, AppServiceRequestReceivedEventArgs args)
  
          {
  
              var value = args.Request.Message["REQUEST"] as string;
  
              switch (value)
  
              {
  
                  case "StartFFmpeg":
  
                      Test();
  
                      break;
  
              }
  
          }
  
  
  
          private void Test()
  
          {
  
              var process = new Process();
  
              process.StartInfo.RedirectStandardOutput = true;
  
              process.StartInfo.RedirectStandardError = true;
  
              process.StartInfo.FileName = Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName) + @"\ffplay.exe";
  
              process.StartInfo.Arguments = @"-i C:\Users\test\video.mp4";
  
  
  
  
  
              process.StartInfo.UseShellExecute = false;
  
              process.StartInfo.CreateNoWindow = true;
  
              process.Start();
  
          }

  this fails with the following error in the UWP app :

  The target process exited without raising a CoreCLR started event. Ensure that the target process is configured to use .NET Core. This may be expected if the target process did not run on .NET Core.
  
  The program '[16824] FFmpeg.Bridge.exe' has exited with code -532462766 (0xe0434352).

  now my question is, is it possible to start FFmpeg / FFplay with the desktop bridge ? or can we only start .net core processes, the process is running with full privileges so why is that not possible ?

  The UWP App won’t be published on the store, it will only run on a local windows machine.

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  25 novembre 2012, par Sean McGovern

  configure : suncc : Add compiler arch support for Nehalem & Sandy Bridge

• Make UDP-RTMP bridge with FFMPEG

  3 mai 2017, par Jorge Anzola

  I need to make this chain, using computer 2 as a "bridge" between Computer 1 and the streming server.

  Computer 1 ----> Computer 2 ----> Streaming server (Wowza).

  So I’m trying to set this :
  Computer 1 —(via UDP)—> Computer 2 —(Via RTMP)—> Wowza

  What I’ve tried :

  1. At Computer 1

  Entry :

  ffmpeg -i sample.mp4 -c:v copy -c:a copy -f mpegts udp://192.168.0.109:5010

  Result : Worked. Computer 1 sends the data correctly.

  2. At Computer 2

  Entry :

  ffmpeg -i upd://192.168.0.109:5010 output.mp4

  Result : Worked. Computer 2 gets data correctly. Output.mp4 is generated well.

  Entry :

  ffmpeg -i sample.mp4 -c:v copy -c:a copy -f flv rtmp://wowzaServerAddress

  Result : Worked. Wowza shows online the video from sample.mp4

  Entry :

  ffmpeg -re -i udp://@:5010 -f flv rtmp://wowzaServerAddress

  Result :

  stuck at :

  ffmpeg version N-77234-g906c0b7 Copyright (c) 2000-2015 the FFmpeg
  
  built with gcc 5.2.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  
  libavutil 55. 10.100 / 55. 10.100
  
  libavcodec 57. 17.100 / 57. 17.100
  
  libavformat 57. 20.100 / 57. 20.100
  
  libavdevice 57.0.100 / 57. 0.100
  
  libavfilter 6.21.100 / 6. 21.100
  
  libswscale 4.0.100 / 4. 0.100
  
  libswresample 2. 0.101 / 2. 0.101
  
  libpostproc 54. 0.100 / 54. 0.100
  
  **Entry:**
  
      ffmpeg -i udp://192.168.0.109:5010 -c:v copy -c:a copy -f flv rtmp://wowzaServerAddress
  
  **Result:**
  
  *... repeated a lot ...*
  
  Last message repeated 1 times
  
  [h264 @ 000001cef0462200] decode_slice_header error
  
  [h264 @ 000001cef0462200] no frame!
  
  *... repeated a lot ...*
  
   Input #0, mpegts, from 'udp://192.168.0.109:5010':
  
   Duration: N/A, start: 128.032333, bitrate: N/A
  
   Program 1
  
  Metadata:
  
  service_name: RARBG.COM - Spotlight.2015.1080p.WEB-DL.DD5.1.H264-RARBG
  
  service_provider: FFmpeg
  
  Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), 
  
  yuv420p(tv, bt709), 1916x1032 [SAR 1:1 DAR 479:258], 23.98 fps, 23.98 tbr, 90k tbn, 180k tbc
  
  Stream #0:1[0x101](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 200 kb/s
  
  [flv @ 000001cef132a1c0] Codec for stream 0 does not use global headers but container format requires global headers
  
  [flv @ 000001cef132a1c0] Codec for stream 1 does not use global headers but container format requires global headers
  
  Output #0, flv, to '**rtmp://wowzaServerAddress**':
  
  Metadata:
  
  encoder: Lavf57.20.100
  
  Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 1916x1032 [SAR 
  
  1:1 DAR 479:258], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 90k tbc
  
  Stream #0:1(eng): Audio: aac ([10][0][0][0] / 0x000A), 48000 Hz, stereo, 
  
  200 kb/s
  
  Stream mapping:
  
  Stream #0:0 - #0:0 (copy)
  
  Stream #0:1 - #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [flv @ 000001cef132a1c0] Malformed AAC bitstream detected: use the audio 
  
  bitstream filter 'aac_adtstoasc' to fix it ('-bsf:a aac_adtstoasc' option with ffmpeg)
  
  av_interleaved_write_frame(): Invalid data found when processing input
  
  [flv @ 000001cef132a1c0] Malformed AAC bitstream detected: use the audio bitstream filter 'aac_adtstoasc' to fix it ('-bsf:a aac_adtstoasc' option with ffmpeg)
  
  [flv @ 000001cef132a1c0] Failed to update header with correct duration.
  
  [flv @ 000001cef132a1c0] Failed to update header with correct filesize.
  
  Error writing trailer of rtmp://**wowzaServerAddress**: Invalid data found when processing inputframe= 1 fps=0.0 q=-1.0 Lsize= 0kB time= 00:00:02.13 bitrate= 1.6kbits/s
  
  video:33kB audio:59kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  Conversion failed !