Recherche avancée

Sur d’autres sites (7148)

• C# Recording 3D object ffmpeg

  1er décembre 2015, par Skyx

  I want to make a screen recording on my application in C# which has a 3D model in it. I found out that i can do the recording with ffmpeg. I implemented the CopyFromScreen function which records the whole screen.

  CopyFromScreen.graphics.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size);

  I want to record only my 3D model viewport without recording the whole screen. Does anyone know or experience working with ffmpeg recording just the specifiek object or a 3D viewport ?

  private readonly HelixViewport3D _viewport = new HelixViewport3D(); // my 3D model viewport

• ffserver "dimensions not set" when loading stream

  29 mai 2013, par GreenGiant

  I am live streaming a webcam from my raspberry pi using avconv (ffmpeg "replacement")

  avconv -f video4linux2 -v debug -r 5 -s 176x144 -i /dev/video0 -vcodec mjpeg http://192.168.0.3:8090/feed1.ffm

  to my local network OSX machine (for testing) running ffserver

  Port 8090
  
  BindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000
  
  CustomLog -
  
  NoDaemon
  
  
  
  <feed>
  
     File feed1.ffm
  
     FileMaxSize 20M
  
     ACL allow 192.168.0.10
  
  </feed>
  
  
  
  <stream>
  
     Feed feed1.ffm
  
     Format mjpeg
  
     NoAudio
  
     VideoQMin 1
  
     VideoQMax 10
  
     VideoSize 176x144
  
     VideoFrameRate 5
  
  </stream>

  When I start avconv it appears to be streaming to ffserver fine :

  Output #0, ffm, to 'http://192.168.0.3:8090/feed1.ffm':
  
    Metadata:
  
      encoder         : Lavf55.0.1
  
      Stream #0.0, 0, 1/1000000: Video: mjpeg, yuvj420p, 320x240, 1/5, q=2-31, 200 kb/s, 1000k tbn, 5 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo -> mjpeg)
  
  Press ctrl-c to stop encoding
  
  frame=  108 fps= 18 q=21.7 size=     688kB time=21.60 bitrate= 260.9kbits/s 

  And the ffserver status page shows the stream

  

  However when I load http://localhost:8090/test.mjpeg in VLC it doesn't play and ffserver spits out :

  Sat May 25 17:25:34 2013 dimensions not set
  
  Sat May 25 17:25:34 2013 Error writing output header
  
  Sat May 25 17:25:34 2013 127.0.0.1 - - [GET] "/test.mjpeg HTTP/1.1" 200 66

  I've tried so many different configurations and settings, I'm at a loss to what is causing that error !

  Thank you

• ffmpeg to opengl texture with glTexImage2D

  12 juin 2013, par 2kPi

  I'm trying to make a player in OpenGL. I use ffmpeg to decode the video.

  I searched several tutorial (StackOverflow, ....) how to convert my pFrameRGB-> data [0] texture in OpenGL, but it still shows me a white square. I converted my video to 512x256 to comply with 2 ^ n.

  I know my pFrameRGB is correct because I can create frameX.ppm with "SaveFrame (...)" function.

  I used the following source ( https://github.com/arashafiei/dranger-ffmpeg-tuto/blob/master/tutorial02.c ) code as a model by adapting for my player.

  And this is my source code :

  http://www.sourcepod.com/uagkel22-19078

  Does one of you have a solution to my problem ?

  Edit 1 :

  I delete :

  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
  
  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  
  
  
  glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, 1 ? GL_REPEAT : GL_CLAMP );
  
  glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, 1 ? GL_REPEAT : GL_CLAMP );

  And replaced :

  glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, pCodecCtx->width, pCodecCtx->height, 0, GL_RGB, GL_UNSIGNED_BYTE, pFrameRGB->data[0]);

  by :

  if(firstRendering){
  
  glBindTexture(GL_TEXTURE_2D, texture);
  
  glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, pCodecCtx->width, pCodecCtx->height, 0, GL_RGB, GL_UNSIGNED_BYTE, pFrameRGB->data[0]);
  
  
  
  firstRendering = 0;
  
  
  
  }else{
  
  
  
  glActiveTexture(texture);
  
  glBindTexture(GL_TEXTURE_2D, texture);
  
  glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, pCodecCtx->width, pCodecCtx->height, GL_RGB, GL_UNSIGNED_BYTE, pFrameRGB->data[0]);
  
  }

  And i try to run but stiil nothing...