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HOW-TO, Techniques, & Best Practices Channel
All This HD Footage...What Now?
By Ryan Hensley
posted May 7, 2009, 23:15 |
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Ryan Hensley is an award winning editor. His career started 12yrs ago as a combat videographer and post production supervisor for the United States Marine Corps. He spent some time in Television news editing before becoming the Sr. Editor at DNP Studios, a film production company in Orlando, FL. After leaving Florida, Ryan ventured to Boston, MA to pursue a freelance editing career which led him to his current job working as a Creative Editor at Viewpoint Creative in Boston, MA. Ryan has edited feature films, music videos and countless commercials and network promos.
In today�s fast moving world of technology, HD (high definition)
is finally coming to the forefront of video production. From feature
films, episodic television and documentaries to corporate video
and even weddings, HD post-production is happening all around
us. David Nixon, President of DNP, Inc., an Orlando-based film
and video production company says, �We�ve all been waiting to
get into HD for so long and thinking it would be much more
difficult to produce because of the higher quality, but actually, it�s a
lot easier to work in than standard definition.� So before you begin
your adventure into the world of HD editing, you may want to keep
these simple suggestions in mind.
What is the main advantage that HD provides over SD (standard
definition)? Resolution. Resolution. Resolution. Hi-Definition
video screen resolution is double that of standard definition. SD or
525i is an interlaced video image. An interlaced picture shows
each frame of video on every other horizontal line. As the frames
are projected on the screen, the video signal alternates between
showing even and odd lines. HD on the other hand gives you
either 720p or 1080i video. High definition or 720p is a
progressive scan image. A progressive scan image projects every
horizontal line in sequence. Therefore, a progressive scan video
signal sends twice as much data than an interlaced signal each
time it draws an image on the screen. 1080i high definition is an
interlaced signal, however, it is almost twice as many lines as that
of standard definition. HD results in a sharper, more vibrant
picture quality. Now the key is how you manage and edit this
beautiful picture information.
For the independent filmmaker who does not have access to a
non-linear online HD suite, the fastest and cheapest way to �Edit
Now� is to down-convert your HD shoot tapes to a digital SD
format like DVCam or miniDV. The key here is to make sure that
the timecode on your original HD shoot tapes are preserved onto
your downconverted tapes. This will be very critical when at the
online stage of the edit.
A decision that should be made at this point should be whether
or not you want to edit your offline in a 4x3 or 16x9 aspect ratio.
Either way is fine. This really is just a personal preference at this
point. Now that you have your downconverted tapes,� you are
ready to start your offline edit.
Before the offline process begins, your first decision needs to be
which online system to use. There are a lot of non-linear editing
systems on the market right now for editing in standard definition,
but you need to decide on which system will translate to HD the
best. For example, if you know you will be conducting your online
edit with an Avid HD editing system, it would be best for you to do
your offline edit on an Avid SD system. There are programs out
there, however, that will convert one system�s timeline to another
system�s timeline.
As a matter of fact, another editor and I recently finished an
offline edit for a feature film on an Avid Media Composer. We
used downconverted 4x3 images from the DVCPro HD tape stock.
Once the rough cut was complete, the 30fps Avid standard
definition timeline was converted into a 24fps Final Cut Pro HD
timeline. It worked great. There was a need for a little tweaking
because of the 3:2 pulldown, but nothing major. It�s just good to
know that programs like this exist.
The second decision you will need to make is which frame rate
you will eventually want to end up at. If you are planning to do a
film out from your HD master, then you will want to edit and
master in 24fps as this is the frame rate of a film projector. If you
are planning to broadcast your final master via television or DVD,
then you will want to edit at 60fps as this is the frame rate that
converts back to 30fps best.
Your offline edit should be kept as simple as possible. Cuts and
dissolves only will translate via an EDL (edit decision list) to an
Avid HD editing system or Final Cut Pro HD system pretty well. At
this stage of the edit, don�t worry about effects, graphics or even
titles. You will want to create these elements in HD during the
online stage of the edit. You can put temp titles in as place holders
for the online edit if you want to.
Once your rough edit has been finished and you have reached
picture lock, export your EDL files, grab your original HD tapes
and head down to the HD online facility of your choice.
For those fortunate enough to own a Final Cut Pro HD system,
an offline edit process can be skipped. You can start from scratch
at full HD resolution. There is no need to worry about having to
have terabytes of storage space. The reason for this is all in
Panasonic�s DVCPro HD codec. The HD files digitized in this
codec are actually smaller than the 525i SD files digitized. With
that being said, one 500GB Firewire drive is more than enough
space for multiple HD projects.
There are many online HD editing applications. One of those is
Final Cut Pro HD. With Apple and Panasonic teaming up, HD
editing on Final Cut Pro HD is made simple and reliable. Bob
Zelin, Freelance Video Engineer states, �It is surprising to many
people that the common Firewire connection operates at
400Mb/sec, which is fast enough to transfer an HD signal into a
computer.� Firewire technology means that you are a plug and
play step away from capturing HD video from either HDV or
DVCPro HD tape decks right into your computer.
Once your sequence has been imported into the non-linear
online HD suite and you have batch digitized your timeline in HD
resolution, you can begin your online edit session. Now is when
you will be adding all of the digital effects you would like to
sweeten your edit with.
Graphics in HD are just as easy if not easier than standard
definition. Ringing edges on keys, jumpy morph lines and the like
are all helped greatly with the increased resolution of HD. High
definition graphics and titles can be made using various desktop
applications like Adobe After Effects and Photoshop, Apple Shake
and Motion and Discreet Combustion just to name a few. The
advantages to HD graphics are once again, resolution. The clarity
of HD graphics is incredible next to SD graphics. Text artifacting is
lessened by the increased resolution.
If you need to outsource your special FX needs like compositing
or 3D, you can make uncompressed HD quicktime files of the
shots needed and put them on a firewire drive. Then send the drive
to your digital artist. Once the artist is finished with your shot, they
will send your drive back with the special FX shot completed as an
uncompressed HD quicktime or a still image sequence. Import the
shot/s into your project, and drop it into the timeline. Art David of
Wavelight Digital Images, Inc., says, � In compositing a layered
effects shot in HD, the shear resolution gain makes life so much
easier, and the end product so much more satisfying. When you
are, say, trying to extract a matte from a blonde girl�s blowing hair,
shot against a green screen, the extra pixels are instrumental in the
clarity, and ultimately the believability, of the final effect.� Once
your timeline has reached picture lock status in HD resolution,
your online process is almost complete. Now you need to make a
master of your sequence.
Now you can master your project to any HD format of your
choice or in the very near future, you will be able to encode your
final sequence to an HD format DVD. If you know your HD show
is going to be broadcast, then you will need to make a D5 master.
The D5 tape format is the industry standard for broadcast
mastering.
HD editing doesn�t have to be scary at all. As you can tell, it�s
really not that much different from editing in standard definition.
So go out there and have fun creating some great HD
programming. Happy editing!
This article may not be reprinted in print or internet publications without express permission of StudentFilmmakers.com.
Check out this article in the May 2006 print edition of StudentFilmmakers magazine, page 24.
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