LIBRARY: Tutorials Reviews Interviews Editorials Features Business Authors RSS Feed

Alternate HDV Workflows Using HDMI

Video Production Article from The Creative COW Magazine


Creative COW Magazine presents - Alternate HDV Workflows Using HDMI



Michael PalmerMichael Palmer
Lakewood California, USA

©2007 Michael Palmer and CreativeCOW.net. All rights reserved.

Article Focus:

In this day and age where time is money, I've found a fast, affordable, all-digital alternative to native HDV workflows, featuring the somewhat clandestine and covert HDMI connection.


While HDMI is a relatively new prosumer connection, it supports uncompressed HD signals together with multiple channels of audio. The only challenge has been getting a signal into your NLE using this HDMI connection.

Here's how to do it: the Convergent Design HD-Connect MI. I originally found information about Convergent Design in the Cow forums over a year ago, and liked what I saw. I've always believed that digital hardware conversion offer advantages of quality and speed over software conversion, and the HD-Connect MI looked like the right fit for me.

(Although I use Apple Final Cut Studio, the HD-Connect- MI has also been tested with Avid editing applications, Adobe Premiere Pro, Sony Vegas, and Media 100 among others. It also works with the HDMI port on JVC products, not just the Sony gear I use.)

As a producer, I needed to shoot DV and deliver in DigiBeta for a national cable NASCAR program I created over 5 years ago. When the show started production, the highest-quality and most cost-effective way to convert on capture was with the Sony 1500a deck. I added an optional Sony SDI hardware decoder card to convert the DV to 8 bit uncompressed SD.

Now that our production has gone HD, I use the Sony HVR-V1U HDV camera to shoot. When I'm ready to edit, I send the HDMI signal from my Sony M25U deck into the HD-Connect MI. While the MI offers many conversion options, I use it to send HD-SDI into my Kona LHe capture card and on to Final Cut Studio 2.

The MI isn't just for capture. Both timecode and deck control come through RS-422, keeping all the timecode of my HD-SDI sources intact as it moves through FCS. The MI's cross-conversion does everything you'd want, so getting 1080 HD out of 720, or realt time downconverts are painless.

I found the MI's SD downconversion worked really well a few weeks ago on a local cable commercial I produced. We wanted to have HD for future use but needed to deliver in SD. The MI made this extremely easy from the start by simply capturing in uncompressed 8 bit SD: 1 step, all digital.

Another hardware conversion I regularly use is conversion to Apple ProRes inside my Intel Mac/FCS 2 system. I can capture my HDV footage to ProRes on the fly, to take advantage of the higher-colorspace rendering in ProRes, as well as the improved performance of I-frame video on my computer.

At the time I'm writing this, the MI's $595 MSRP makes it the cheapest ProRes capture hardware.

I believe I've also found the best way to use the Sony V1U camera with the HD-Connect MI for live capture to ProRes that bypasses HDV compression altogether. It's a bit of a Ball and Chain method, as you need to drag around a Mac Pro behind the camera, but here's how it works.

Let's say you have the Sony V1U connected via HDMI to the Convergent Design HD-Connect MI. Then you run a 100' HD-SDI cable into the Kona LHe card in a Mac Pro. The HDMI video and audio out of the live shot has never been processed at all, so the image is crystal clear.

You can use either FCP 6 or the AJA VTR Exchange software to capture to ProRes. You'll need proper storage, someone to operate the Mac Pro, and a constant AC power supply, but this is a small price to pay for live capture of the highest-quality images to ProRes.

The same workflow will work for capture directly to uncompressed HD. You won't need as new a computer or as powerful a processor - there's very little processing going on for uncompressed - but you'll need bigger and faster drives. Either way, live or recorded, you win with these products.


Michael's system specs:
  • Apple Mac Pro 3Ghz,
  • 5 Gigs Ram,
  • 6-internal drives, 1-system drive and 5-500 gig Western Digital drives (2.5TB) set as RAID0 with specifically designed internal mounting hardware from www.maxupgrades.com
  • AJA Kona LHe,
  • Convergent Design HD-Connect MI,
  • Apple 23 Cinema Display
  • Apple Final Cut Studio 2
  • Sony M25U deck and HVR-V1U and Z1U cameras



Michael Palmer Michael Palmer
Los Angeles, California

Michael Palmer has been a film production professional since 1981, working mainly as a Gaffer lighting for features, episodic TV and commercials shot on film. A member of the IA, Local 728 LA & 52 NYC, he started producing 5 years ago when he created a national cable NASCAR show for Fox Sports SPEED Channel.




Mike SchellMike Schell
Denver Colorado, USA

©2009 Mike Schell and CreativeCOW.net. All rights reserved.


Convergent Design's Mike Schell on HDMI

HDMI (High Definition Multimedia Interface) is projected to become the interconnect for TVs, set-top boxes, DVD players, consumer camcorders, and digital cameras, with an estimated 60 million HDMI-enabled devices shipping this year.

HDMI transmits uncompressed SD or HD video (up to 1080p) and up to 8 channels of high quality (192KHz) 24-bit audio over a single digital connection.

Think of it as DVI + audio + optional HDCP (High Definition Content Protection), with some significant improvements to potential video resolution and quality. For example, HDMI offers embedded audio (up to 8 channels of PCM or Dolby 5.1/7.1 compressed audio), and 10-Bit YCbCr 4:2:2 or 4:4:4, as compared to only 8-bit RGB 4:4:4 on DVI).

HDMI is also an evolving standard. The most recent spec now has about 3X the required bandwidth for 1080p60 video and audio, plenty of room to grow for future formats.



Find more great Creative COW Magazine articles by signing up for the complimentary Creative COW Magazine.


Related Articles / Tutorials:
Broadcast Video
Best Nonlinear Editing System Report

Best Nonlinear Editing System Report

As the three companies showing their best wares in the Nonlinear Editing System category vie for attention in the broadcasting and post-production world at NAB 2010, some of the glitter caught Walter Biscardi's eye, but others left him wondering if they can keep up. Read on for more insight on what he saw at NAB...

Review, People / Interview
Walter Biscardi
Broadcast Video
In-Stadium Sports TelevisionIn-Stadium Sports Television

In this article from The Creative COW Magazine, Matt Montemayor gives a behind the scends look at BravesVision, the in-house video production team for the Atlanta Braves baseball team. Matt describes the parts and process that makes the whole show happen from the switchers and software to the stats display and the largest HD display in the world.

Feature
Matt Montemayor
Broadcast Video
14 Terabytes of Burnin' Love14 Terabytes of Burnin' Love

Elvis Presley Enterprises took its video production in-house - into Graceland, one of the most famous houses in the world. But with 14TB of archived film and video, they're already running out of room...

People / Interview
Bevin Baddorf
Broadcast Video
Non-fiction TV ProductionNon-fiction TV Production

We often know each other in the Cow from the problems and solutions we share with each other, and very rarely the WORK that we actually do. Allow us to introduce then, a handful of Cows involved in various aspects of non-fiction television production. This covers everything from food and fishing to creating tasteful head wounds. With over 550,000 people passing through the Cow, this is only a brief introduction, but we have to start somewhere, dont we?

Feature
Tim Wilson
Broadcast Video
11 Deadlines a Day11 Deadlines a Day

Andrea found herself with her hands more than full during an unplanned personnel shortage at WJLA, Washington DC affiliate of ABC: so, responsible for creating all the news promos for the sweeps run of the ABC affilate, 11 times daily, she leveraged all her best methods. What happened at 5 PM on the last day of sweeps? Lets see...

Feature
Andrea Laign
Broadcast Video
Read The Book! Real-world Broadcast SpecsRead The Book! Real-world Broadcast Specs

Your TV show isn't ready to air until the STATION says it's ready to air. The good news is that they're clear about what they want from you. Longtime TV vet and Creative COW leader Walter Biscardi tells you some of the things to look for...and some of the things to look OUT for.

Feature
Walter Biscardi
Recent Articles / Tutorials:
Adobe Premiere Pro
Adobe Premiere Pro: Edit Faster with Overlay Editing

Adobe Premiere Pro: Edit Faster with Overlay Editing

Editor, VFX artist, post-house owner, and plug-in developer Simon Ubsdell shows you how to edit faster and more easily using the very useful but not often known-about Overlay edit function in Premiere Pro. This Quick Tip tutorial also offers tips on grouping.

Tutorial
Simon Ubsdell
Art of the Edit
Always Be Editing: Sculptors & Bricklayers Revisited

Always Be Editing: Sculptors & Bricklayers Revisited

Do you edit like a sculptor, or like a bricklayer? It seems a simple enough question, but as longtime editor, post house owner, and VFX software developer Simon Ubsdell shows, the implications for how this affects the way you edit can be profound. His advice, regardless of where you land on the spectrum? Always be editing.


Simon Ubsdell
Audio Professionals
Hearing The Handmaid's Tale: Jane Tattersall's Sound Career

Hearing The Handmaid's Tale: Jane Tattersall's Sound Career

With Emmy, BAFTA, Motion Picture Sound Editors Golden Reel, Canadian Screen, and Directors Guild of Canada Awards among many more, Jane Tattersall shares insights into a career in sound editing entering its fourth decade with two young women just beginning their own careers in the field. Their conversation begins with Jane's work on the Hulu hit series, The Handmaid's Tale.

Feature, People / Interview
Kylee Peña
Art of the Edit
Indie Film Sound Editing: A This Guy Edits Tutorial

Indie Film Sound Editing: A This Guy Edits Tutorial

ACE Award-nominated picture editor Sven Pape ("This Guy Edits") speaks with Sundance Award-winning sound editor Ugo Derouard on The 5 Five Steps of Audio Post Production: Sound Editing, Spotting, Dialog Editing, Sound Design, and Sound Mixing, paying special attention to the specific needs of, and techniques that can work best for, independent filmmakers.

Tutorial
Sven Pape
MORE
© 2017 CreativeCOW.net All Rights Reserved
[TOP]