1240x980_84s.vfo:
 Total lines per frame:   2042
 Total pixels per line:   1610
 Active lines per frame:  1960
 Active pixels per line:  1240
 Frames per second:       42
 Fields per frame:        2
 Swaps per frame:         1
 Pixel clock:             138.08 MHz, period = 7.24218 nsec
 Hardware pixel rounding:  every 1 pixels
 Line analysis: 
  Length:                 1610 Pixels, 1 Lines, 11.6599 usec; (line 0)
  Frequency:              85.764 KHz, period = 11.6599 usec
 Horizontal Sync:         110 Pixels, 796.639 nsec; (line 38)
 Horizontal Back Porch:   252 Pixels, 1.82503 usec; (line 38)
 Horizontal Active:       1240 Pixels, 8.9803 usec; (line 38)
 Horizontal Front Porch:  8 Pixels, 57.9374 nsec; (line 38)
 Field 0 Information:
  Field Duration:           1.64381e+06 Pixels, 1021 Lines, 11.9048 msec; (line 0)
  Vertical Sync:            25760 Pixels, 16 Lines, 186.558 usec; (line 0)
  Vertical Sync Pulse:      25870 Pixels, 16.0683 Lines, 187.355 usec; (line 0)
  Vertical Back Porch:      35420 Pixels, 22 Lines, 256.518 usec; (line 16)
  Vertical Active:          1.5778e+06 Pixels, 980 Lines, 11.4267 msec; (line 38)
  Vertical Front Porch:     4830 Pixels, 3 Lines, 34.9797 usec; (line 1018)
  Swap this field:          true
  Eye this field:           left
 Field 1 Information:
  Field Duration:           1.64381e+06 Pixels, 1021 Lines, 11.9048 msec; (line 1021)
  Vertical Sync:            12880 Pixels, 8 Lines, 93.2792 usec; (line 1021)
  Vertical Sync Pulse:      12990 Pixels, 8.06832 Lines, 94.0759 usec; (line 1021)
  Vertical Back Porch:      48300 Pixels, 30 Lines, 349.797 usec; (line 1029)
  Vertical Active:          1.5778e+06 Pixels, 980 Lines, 11.4267 msec; (line 1059)
  Vertical Front Porch:     4830 Pixels, 3 Lines, 34.9797 usec; (line 2039)
  Swap this field:          false
  Eye this field:           right