Canon's new 50Mbps MPEG-2 Full HD (4:2:2) codec - Page 5 at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon XF Series HD Camcorders

Canon XF Series HD Camcorders
Canon XF305, XF205 and XF105 (with SDI), Canon XF300, XF200 and XF100 (without SDI).


Closed Thread
 
Thread Tools Search this Thread
Old February 2nd, 2010, 11:23 PM   #61
Trustee
 
Join Date: Mar 2007
Location: Sherman Oaks, CA
Posts: 1,259
I'm assuming this will be Long GOP, not I-frame only?
__________________
Avid Media Composer 3.1.3. Boris Red and Continuum Complete. Vegas 8.0c. TMPGEnc Xpress Pro 4.0
Peter Moretti is offline  
Old February 2nd, 2010, 11:35 PM   #62
Inner Circle
 
Join Date: Jan 2006
Location: Minnesota (USA)
Posts: 2,171
Yeah, 50Mbps MPEG-2 intraframe only compression would be a bit rough.
Robert M Wright is offline  
Old February 2nd, 2010, 11:47 PM   #63
Major Player
 
Join Date: Nov 2007
Location: Sydney
Posts: 552
just when I thought that previous Canon announcement was pretty average, it looks like they have been listening.
Looking forward to see some images both of the cam and of what it can produce
Jonathan Shaw is offline  
Old February 3rd, 2010, 06:48 AM   #64
Major Player
 
Join Date: Mar 2006
Location: College Park, Maryland
Posts: 913
Quote:
Originally Posted by Andrew Kimery View Post
Colors would contain less noise and the image could be processed more in post before 'falling apart.' The same thing that provides a smoother edge for chroma keying would also supply a smoothing looking fall off of, let's say, a color light on a stage or a presenter standing in front of a big power point presentation.


-Andrew
Thanks for the explanation Andrew!
Monday Isa is offline  
Old February 3rd, 2010, 06:57 AM   #65
Inner Circle
 
Join Date: Apr 2006
Location: Wales
Posts: 2,130
Don't suppose anyone has any info on when these cams might hit the shelf?
Steve
Steve Phillipps is offline  
Old February 3rd, 2010, 06:57 AM   #66
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
The difference between 4:2:0 and 4:2:2 is purely down to chroma resolution. It won't change the amount of chroma noise or the intensity of the colours. In interlace the difference is more pronounced and can be seen on fine strongly coloured edges as a slightly jagged edge. In progressive the difference is much less significant and often very hard to spot. Certainly 4:2:2 is preferable, but the camera will need good sensors to fully take advantage of it. Let's hope Canon don't disappoint!
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline  
Old February 3rd, 2010, 07:59 AM   #67
Trustee
 
Join Date: Mar 2004
Location: Milwaukee, WI
Posts: 1,719
50 mbits/s with mpeg2 is a darn good bitrate and even convergent design will tell you it is a perfect balance for high quality acquisition. The only time they suggest going higher is if you really need to know every frame is rock solid as perfect as the camera itself will allow. 35 mbits is already known as a pretty solid format and moving up to 50 mbits makes it even more rock solid.

Even if computers are capable of dealing with native AVCHD editing they will always be a step ahead with mpeg2 editing. If a system a few years from now can edit 3 streams of AVCHD then it would be able to handle 6 streams of mpeg2. The rendering will also be at least twice as fast which is a pretty big deal for a lot of professionals that need a quick turn around time. A lot of NLE's even have mpeg2 smart rendering so only the stuff you change gets rendered. I would rather render a project in 2 hours compared to 10 hours if I have a client waiting.

As for broadcast specs I wouldn't be as concerned about it. Stations can tell if you shot with a 4:2:0 camera but it is much harder to tell if you shot with a 1/2" camera. If you light carefully I doubt many people would notice. Sometimes there can be a slight difference in detail as most 1/2" or 2/3" cameras use full raster CCD's. Ironically HDCAM dumbs this down to a 1440x1080 3:1:1 color tape. So other then low light performance I expect the new Canon format to at least beat the pants off the HDCAM tape format.

Maybe I should finally sell my old XL1 to pay for the tax on this new camera. LOL
Thomas Smet is offline  
Old February 3rd, 2010, 10:19 AM   #68
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Quote:
Originally Posted by Thomas Smet View Post
Maybe I should finally sell my old XL1 to pay for the tax on this new camera. LOL
Sounds like a sound business decision to me. ;0)
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline  
Old February 3rd, 2010, 11:11 AM   #69
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
Quote:
Originally Posted by Steve Phillipps View Post
Don't suppose anyone has any info on when these cams might hit the shelf?
That info will be included in the official Canon press release announcing the camera, whenever it is issued. Until then, nobody knows for sure (and those who do are restricted by NDA). So far, Canon has said only "sometime in 2010." Of course, DV Info Net always reports official news as it happens, so stay tuned to this site.
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd is offline  
Old February 3rd, 2010, 03:37 PM   #70
Major Player
 
Join Date: Feb 2003
Location: Decatur, AL
Posts: 858
I hope they take a page from their consumer AVCHD line and include say 128GB or 256GB (to one-up the Sony NX cams.) on board flash memory.

What else would be nifty is a tape based acquisition system too... And also the ability to use removable media like SD cards.

3 types of storage....pie in the sky?
__________________
Kyle
KR Productions; www.kyleroot.com
Kyle Root is offline  
Old February 3rd, 2010, 04:06 PM   #71
Inner Circle
 
Join Date: Apr 2006
Location: Wales
Posts: 2,130
Sounds good to me Kyle. Any reason why that would be impractical? There may well be one, but I don't know it.
Steve
Steve Phillipps is offline  
Old February 3rd, 2010, 04:06 PM   #72
Obstreperous Rex
 
Join Date: Jan 2001
Location: San Marcos, TX
Posts: 26,900
Images: 513
Take a look at the photos in my article... there's no tape transport mechanism on this model.
__________________
CH

Search DV Info Net | DV Info Net Sponsors | A Decade (+5) of DVi | ...Tuesday is Soylent Green Day!
Chris Hurd is offline  
Old February 3rd, 2010, 05:01 PM   #73
Inner Circle
 
Join Date: Jan 2006
Location: Minnesota (USA)
Posts: 2,171
You know, I've sort of wondered at times, why Sony didn't take essentially a DVCAM approach (faster tape transport speed) and offer what amounts to recording XDCAM EX on MiniDV tape, years ago, shortly after HDV was first introduced. They could have done that right from the get-go with the Z1.
Robert M Wright is offline  
Old February 3rd, 2010, 05:44 PM   #74
Starway Pictures
 
Join Date: Jul 2005
Location: Studio City
Posts: 581
10-bit color would've been nice.
Robert Sanders is offline  
Old February 3rd, 2010, 06:23 PM   #75
Major Player
 
Join Date: Feb 2003
Location: Decatur, AL
Posts: 858
Chris, I did see the pictures in your article when you posted it originally. My thought was, it was just a rough mock up with the possibility of design changes still a reality.

If Canon was able to cover all the bases with tape, SD/CF, and built in storage, they would please a lot of people. Especially those of us who have some concerns about archiving, which currently is a lot easier with tape.
__________________
Kyle
KR Productions; www.kyleroot.com
Kyle Root is offline  
Closed Thread

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon XF Series HD Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 06:27 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network