C100 footage degraded on export at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon Cinema EOS Camera Systems

Canon Cinema EOS Camera Systems
For all Canon Cinema EOS models: C700 / C300 Mk. II / C200 / C100 Mk II and EF / PL lenses.


Reply
 
Thread Tools Search this Thread
Old August 14th, 2014, 08:33 PM   #1
Major Player
 
Join Date: Mar 2012
Location: Hamilton, New Zealand
Posts: 745
C100 footage degraded on export

Hi guys,

I got my C100 a few days ago and so far I'm extremely happy with the footage it produces. When viewing the raw footage, it's extremely clean and sharp.

However, once I export the footage from my NLE (Avid MC), it seems to be degraded. I'm exporting in a lossless format (Quicktime .MOV "same as source"), so it shouldn't be doing any kind of re-compression. But if you look at the video below, you can see wavy lines and artifacts, especially on sharp edges like the roof of the house and the leaves on the trees.

I haven't had this issue with footage from my other cameras, and my workflow hasn't changed.

Any thoughts? Not sure if this is a question for the NLE forum... thought I'd try here first.

Obviously YouTube will have compressed the file but the issues are still noticeable:

Thanks in advance.
Jody Arnott is offline   Reply With Quote
Old August 15th, 2014, 04:53 AM   #2
Trustee
 
Join Date: Aug 2005
Location: Berkshire, UK
Posts: 1,562
Re: C100 footage degraded on export

Your footage is fine. It's just the way AVID is interpreting the AVCHD, and it can be fixed quickly.

What you're seeing is Avid misinterpreting the 'Progressive Segmented Frame' flag of the AVCHD footage, which is progressive, but your NLE thinks is interlaced*, and is doing a line doubling 'deinterlace' for you when it should not do it.

Adobe Premiere and Final Cut Pro X also do this.

Here's a lengthier explaination and a guide to fixing it in PPro and FCPX - sorry, I don't do Avid.

Canon C100 PsF – the fix | Travelling Matt

I'm sure it's a simple 'interpret footage' switch somewhere in the import to bin bit.

* the progressive frame is stored in an 'interlace wrapper' - just the nature of the way Canon's implementation of AVCHD works. The frame really is interlaced, but it contains the progressive frame segmented into two fields from the same frame - Progressive Segmented Frame, PsF.
__________________
Director/Editor - MDMA Ltd: Write, Shoot, Edit, Publish - mattdavis.pro
EX1 x2, C100 --> FCPX & PPro6
Matt Davis is offline   Reply With Quote
Old August 15th, 2014, 11:42 AM   #3
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: C100 footage degraded on export

In Avid you will need to open the bin where your footage is located and view it in list view (not thumbnails or script view). Turn on a field called "Field Motion". This will show you how Avid is seeing the footage (progressive or interlaced). If it is seeing the footage as interlaced you can manually set it to progressive.

This should take care of the problem.
Attached Thumbnails
C100 footage degraded on export-screenshot-2014-08-15-12.38.04.png  
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old August 17th, 2014, 12:47 AM   #4
Major Player
 
Join Date: Mar 2012
Location: Hamilton, New Zealand
Posts: 745
Re: C100 footage degraded on export

Thanks guys. That makes sense. I'm away for a few days but I'll have a look when I get back to the office and report back.

Much appreciated.
Jody Arnott is offline   Reply With Quote
Old August 24th, 2014, 02:35 AM   #5
Major Player
 
Join Date: Mar 2012
Location: Hamilton, New Zealand
Posts: 745
Re: C100 footage degraded on export

Quote:
Originally Posted by Chris Medico View Post
In Avid you will need to open the bin where your footage is located and view it in list view (not thumbnails or script view). Turn on a field called "Field Motion". This will show you how Avid is seeing the footage (progressive or interlaced). If it is seeing the footage as interlaced you can manually set it to progressive.

This should take care of the problem.
Hi Chris,

I have finally found some spare time to test out my Avid/C100 workflow. As you suggested, Avid is interpreting the footage as interlaced.

I can't seem to remember where the setting is to force Avid to interpret the footage as progressive. Could you shed any light on this? Google isn't much help.

I'm using AMA to import the footage, if that makes a difference.

Thanks in advance.
Jody Arnott is offline   Reply With Quote
Old August 24th, 2014, 06:53 AM   #6
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: C100 footage degraded on export

If you click on the "Field Motion" field for a video in the bin you should get little popup. You should be able to select from the options in the popup. You will have to do this for each file in your bin.

I'll look and see if it can be changed in a batch method.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old August 24th, 2014, 07:04 AM   #7
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: C100 footage degraded on export

I just selected a bin full of clips and changed them from progressive to interlaced by clicking on the "Field Motion" field and changing one with the others selected. They all changed together. I am running MC7 so your mileage may vary if you are running an earlier version.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old August 24th, 2014, 07:23 PM   #8
Major Player
 
Join Date: Mar 2012
Location: Hamilton, New Zealand
Posts: 745
Re: C100 footage degraded on export

Quote:
Originally Posted by Chris Medico View Post
I just selected a bin full of clips and changed them from progressive to interlaced by clicking on the "Field Motion" field and changing one with the others selected. They all changed together. I am running MC7 so your mileage may vary if you are running an earlier version.
Thanks Chris, that seems to have done the trick. Much appreciated.
Jody Arnott is offline   Reply
Reply

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 Cinema EOS Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 09:45 PM.


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