Optimizing video quality, Loop recording save tags applied to a tagged clip – V.I.O. POV.HD User Manual User Manual
Page 41

POV.HD User Manual
Tips and Guidelines
38
Loop Recording
Save Tags Applied to a Tagged Clip
The length of all loop clips is equal to twice the value of
Loop Record Time at time the recording was done.
The length of all tag clips are equal to the value of Loop
Record Time at the time Save Tags is run.
Loop clips show action that mostly occurs prior to the
tag, with a variable amount of footage following the
tag.
1
Save Tags creates clips that are aligned so that half of the clip
is prior to the tag and half follows it.
1
The Loop method saves only the loop clips. Other action
that occurs during the recording period is not saved.
The original clip on which Save Tags operates contains all of
the action that occurred during the recording period.
Loop clips can be reviewed on the recorder.
Tag clips made with Save Tags must be uploaded to a
computer before they can be viewed.
2
Recordings made with Loop will usually require less
storage than Clip or Loop & Forward recordings.
3
Using Save Tags on a clip requires storage for both the
original clip plus the tag clips.
Table Notes:
1
See the diagrams for Loop and for Save Tags, in the preceding sections.
2
Tag clips can be deleted from the SDHC card using the recorder by deleting the tagged clip file on which they
are based.. They are automatically deleted when the tagged clip is deleted.
3
Each time you press tag when using the Loop Record Method, a loop clip equal in length to twice the Loop
Record Time is saved. If you press tag, on the average, more frequently than the length of a saved Loop, you
will store a total footage that is greater than the total running time.
Optimizing video quality
Ultimately	
  video	
  quality	
  is	
  in	
  the	
  eye	
  of	
  the	
  beholder.	
  We	
  can	
  measure	
  and	
  adjust	
  clarity,	
  color	
  accuracy,	
  color	
  
depth,	
  white	
  balance,	
  contrast,	
  and	
  all	
  kinds	
  of	
  other	
  things	
  to	
  make	
  the	
  video	
  you	
  take	
  to	
  look	
  as	
  good	
  as	
  
possible	
  to	
  you	
  and	
  your	
  friends.	
  The	
  POV.HD	
  includes	
  both	
  automatic	
  controls	
  that	
  ensure	
  high	
  quality	
  video	
  
under	
  a	
  wide	
  variety	
  of	
  shooting	
  conditions	
  and	
  manually	
  adjustable	
  settings	
  for	
  tweaking	
  video	
  quality.	
  
One	
  of	
  the	
  most	
  difficult	
  problems	
  with	
  hands-‐free	
  POV	
  video	
  is	
  that	
  the	
  scene	
  you’re	
  filming	
  changes	
  
continuously	
  and	
  since	
  you	
  may	
  be	
  busy	
  hanging	
  on	
  and	
  going	
  as	
  fast	
  as	
  you	
  can,	
  the	
  camera	
  needs	
  to	
  take	
  
care	
  of	
  the	
  second	
  to	
  second	
  details.	
  
The	
  POV.HD	
  has	
  built-‐in	
  dynamic	
  exposure	
  control	
  and	
  white	
  balance	
  logic	
  that	
  constantly	
  adjusts,	
  not	
  just	
  the	
  
exposure,	
  but	
  the	
  white	
  balance,	
  contrast	
  level,	
  and	
  color	
  depth	
  as	
  well.	
  Under	
  almost	
  any	
  outdoor	
  shooting	
  
conditions	
  this	
  results	
  in	
  high	
  quality	
  video.	
  	
  
The	
  POV.HD	
  adds	
  four	
  settings	
  that	
  give	
  you	
  the	
  optional	
  ability	
  to	
  tweak	
  the	
  frame	
  processing	
  logic	
  to	
  create	
  
an	
  optimal	
  match	
  between	
  prevailing	
  conditions	
  and	
  your	
  preferences	
  for	
  the	
  look	
  of	
  the	
  final	
  video.	
  You	
  can	
  
shoot	
  high	
  quality	
  video	
  all	
  day	
  without	
  ever	
  thinking	
  about	
  these	
  settings,	
  but	
  under	
  certain	
  conditions,	
  using	
  
the	
  video	
  adjustment	
  settings	
  can	
  produce	
  even	
  better	
  results.	
  With	
  just	
  a	
  bit	
  of	
  practice	
  even	
  a	
  novice	
  can	
  
learn	
  when	
  and	
  how	
  to	
  make	
  beneficial	
  adjustments.	
  If	
  you’re	
  familiar	
  with	
  the	
  adjustments	
  available	
  on	
  a	
  
DSLR	
  still	
  camera,	
  you	
  will	
  already	
  know	
  about	
  these	
  settings.	
  	
  
Spot	
  Exposure	
  Metering	
  
The	
  dynamic	
  exposure	
  control	
  logic	
  works	
  by	
  analyzing	
  the	
  light	
  level	
  and	
  other	
  other	
  key	
  characteristics	
  
of	
  the	
  image	
  in	
  frames	
  as	
  their	
  captured	
  by	
  the	
  camera	
  head,	
  and	
  then	
  adjusting	
  the	
  exposure	
  level	
  of	
  the	
  
imager	
  in	
  the	
  camera	
  head	
  to	
  compensate	
  for	
  changes	
  in	
  light	
  levels.	
  When	
  you	
  ride	
  from	
  sunlight	
  into	
  
shade,	
  the	
  POV.HD	
  will	
  automatically	
  increase	
  the	
  exposure	
  level	
  to	
  compensate.	
  
