// Only setup the avi if it's actually a video screen

if (isVideoScreen && replacement[0] != '\0') {

  char *error_msg = NULL;

  long xres = 0;

  long yres = 0;

  float duration = 0.0f;

  movie = new AVIKit( absolute_replacement, false );

  if (movie->getError( &error_msg ) != AVIKIT_NOERROR) {

    gEngfuncs.Con_DPrintf( "SetupAvisFromEntities: Error opening %s: %s\n", absolute_replacement, error_msg );

    delete movie;

    break;

  }

  movie->getVideoInfo( &xres, &yres, &duration );

  gEngfuncs.Con_DPrintf( "SetupAvisFromEntities: Opened %s: %ld x %ld (%f secs)\n", replacement, xres, yres, duration );

  gEngfuncs.Con_DPrintf( "Video screen at (%d %d %d), with extents (%d %d %d)\n",

  (int)origin[0], (int)origin[1], (int)origin[2],

  (int)extents[0], (int)extents[1], (int)extents[2] );

  // Create the OpenGL texture

  GLuint texnum;

  glGenTextures( 1, &texnum );

  if (!AddComplexAvi( movie, texnum, origin, angles, extents, &error_msg )) {

    gEngfuncs.Con_DPrintf( "SetupAvisFromEntities: Error adding movie: %s\n", error_msg );

    delete movie;

  }

} else if (isVideoScreen) {

  gEngfuncs.Con_DPrintf( "SetupAvisFromEntities: Video screen didn't have a movie specified!\n" );

}

//Setting up the texture:

movie->getVideoInfo( &data->width, &data->height, &data->total_length );

glEnable( GL_TEXTURE_2D );

glBindTexture( GL_TEXTURE_2D, data->texture_index );

glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

glTexImage2D( GL_TEXTURE_2D, 0, 3, data->width, data->height, 0, GL_RGB, GL_UNSIGNED_BYTE, tmpbuffer );

//Updating the texture each frame:

// Calculate the frame needed

int frame = i->movie->getVideoFrameNumber( i->current_time );

// If the frame has changed, re-upload it

if (frame != i->current_frame) {

  i->current_frame = frame;

  i->movie->getVideoFrame( (char*)i->buffer, frame );

  // If the video isn't a power of two on all sides, we need to resize it... <img src="images/smilies/frown.gif" border="0" alt="">

  if (i->resized_buffer) {

    gluScaleImage( GL_RGB, i->realwidth, i->realheight, GL_UNSIGNED_BYTE, i->buffer, i->width, i->height, GL_UNSIGNED_BYTE, i->resized_buffer );

    // ... and update the OpenGL texture ...

    glEnable(GL_TEXTURE_2D);

    glBindTexture( GL_TEXTURE_2D, i->texture_index );

    glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, i->width, i->height, GL_RGB, GL_UNSIGNED_BYTE, i->resized_buffer );

  } else {

    // ... and update the OpenGL texture ...

    glEnable(GL_TEXTURE_2D);

    glBindTexture( GL_TEXTURE_2D, i->texture_index );

    glTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, i->width, i->height, GL_RGB, GL_UNSIGNED_BYTE, i->buffer );

  }

}

// If this is a complex movie, draw the polygons

if (i->texture_type == AVI_TEXTURE_USER) {

  glEnable( GL_TEXTURE_2D );

  glBindTexture( GL_TEXTURE_2D, i->texture_index );

  glDisable( GL_BLEND );

  glBegin( GL_QUADS );

  // Top left

  glColor3f( 1.0f, 1.0f, 1.0f );

  glTexCoord2f( 0.0f, 1.0f );

  glVertex3f( i->vertexes[0].x, i->vertexes[0].y, i->vertexes[0].z );

  // Bottom left

  glColor3f( 1.0f, 1.0f, 1.0f );

  glTexCoord2f( 0.0f, 0.0f );

  glVertex3f( i->vertexes[1].x, i->vertexes[1].y, i->vertexes[1].z );

  // Bottom right

  glColor3f( 1.0f, 1.0f, 1.0f );

  glTexCoord2f( 1.0f, 0.0f );

  glVertex3f( i->vertexes[2].x, i->vertexes[2].y, i->vertexes[2].z );

  // Top right

  glColor3f( 1.0f, 1.0f, 1.0f );

  glTexCoord2f( 1.0f, 1.0f );

  glVertex3f( i->vertexes[3].x, i->vertexes[3].y, i->vertexes[3].z );

  glEnd();

}