Level changes XAVC-L Slog 3 in Premiere Pro at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony XDCAM PXW-FS7 / FS5

Sony XDCAM PXW-FS7 / FS5
Super 35 CMOS recording 4K to XQD media cards.


Reply
 
Thread Tools Search this Thread
Old December 23rd, 2015, 02:58 PM   #1
Major Player
 
Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 326
Level changes XAVC-L Slog 3 in Premiere Pro

This may be a Premiere Pro issue, but I thought I'd start here and see if anybody else is having this problem.
I shot some XAVC-L 1080 30p tests using SLog 3 gamma. In Premiere Pro CC (2015.1 rel) I see random changes in the levels when native files are played in either the source monitor or program monitor. Can see it on the scopes too. It happens during playback and scrubbing. I don't see these changes in VLC, nor when the MXF files are imported into DaVinci Resolve. Also the problem goes away when I transcode the original files to ProRes 422, and when recorded on my Atomos Ninja Blade. The problem does not seem to occur in footage shot in Slog 2 and standard Gamma (Rec 709).
Here are two samples:
1. XAVC L edited natively
2. Transcoded to ProRes
No problems.

Thanks,

Lee
__________________
www.leebergermedia.com
Lee Berger is offline   Reply With Quote
Old December 24th, 2015, 10:37 AM   #2
Tourist
 
Join Date: Dec 2012
Location: Tallahassee, Florida
Posts: 3
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Looks like an issue with Premiere's ability to handle the native XAVC-L codec...XAVC-L is VERY hardware intensive, as opposed to it's intra-frame counter part, XAVC-I on the FS7. Maybe your GPU is having an issue with all the number crunching? Try updating your graphics card drivers or maybe check for updates/reinstall Premiere? Have you tried seeing if the issue persists in 4K XAVC? Also, not sure if this makes much of a difference, but did you try shooting in both 10 bit 4:2:2 and 8 bit 4:2:0?

As you mentioned, it's probably an issue with Premiere. However it is strange that it only happens with SLog 3.

Best of luck,

-Zach
Zach Hunter is offline   Reply With Quote
Old December 24th, 2015, 12:20 PM   #3
Inner Circle
 
Join Date: May 2005
Location: Burnaby, BC, Canada
Posts: 2,963
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Sometimes weird H.264 decoder issues cause broken GOPs when Premiere reads files. The level changes are likely due to Premiere mis-reading an I, P, or B frame.

Looks like it will be a while before Premiere tunes it's H.264 decoder for newer formats. CS5 had issues with previewing AVCHD 2.0 too.
__________________
I wait for the day cost-efficient global shutter 60fps capable CMOS sensors emerge for use on major manufacturers' cameras. (Sony, Canon, etc.) Rolling Shutters are a plague.
Jack Zhang is offline   Reply With Quote
Old December 24th, 2015, 12:33 PM   #4
Major Player
 
Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 326
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Quote:
Originally Posted by Zach Hunter View Post
Looks like an issue with Premiere's ability to handle the native XAVC-L codec...XAVC-L is VERY hardware intensive, as opposed to it's intra-frame counter part, XAVC-I on the FS7. Maybe your GPU is having an issue with all the number crunching? Try updating your graphics card drivers or maybe check for updates/reinstall Premiere? Have you tried seeing if the issue persists in 4K XAVC? Also, not sure if this makes much of a difference, but did you try shooting in both 10 bit 4:2:2 and 8 bit 4:2:0?

As you mentioned, it's probably an issue with Premiere. However it is strange that it only happens with SLog 3.

Best of luck,

-Zach
Thanks Zach:
Drivers are all up to date and I did shoot both 10 bit 4:2:2 and 8 bit 4:2:0. Perhaps it's the combo of XAVC-L and Slog3. I'm going to shoot a test with an F55, XAVC Intra Slog 3 and see what happens. I'll report back.
__________________
www.leebergermedia.com
Lee Berger is offline   Reply With Quote
Old December 24th, 2015, 12:34 PM   #5
Major Player
 
Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 326
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Quote:
Originally Posted by Jack Zhang View Post
Sometimes weird H.264 decoder issues cause broken GOPs when Premiere reads files. The level changes are likely due to Premiere mis-reading an I, P, or B frame.

Looks like it will be a while before Premiere tunes it's H.264 decoder for newer formats. CS5 had issues with previewing AVCHD 2.0 too.
Thanks Jack:
I also posted this on the Adobe Premiere Pro forum at Adobe.com.
__________________
www.leebergermedia.com
Lee Berger is offline   Reply With Quote
Old June 17th, 2016, 08:15 AM   #6
Trustee
 
Join Date: Sep 2003
Location: Saguenay, Québec, Canada
Posts: 1,051
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Any news on that? I have the exact same problem. Until last week I was on CC 2014.2 and everything was fine witn XAVC - L and Slog 3.
__________________
Jean-Philippe Archibald
http://www.jparchibald.com - http://www.vimeo.com/jparchib
Jean-Philippe Archibald is offline   Reply With Quote
Old June 17th, 2016, 11:49 AM   #7
Major Player
 
Join Date: Feb 2007
Location: London
Posts: 241
Re: Level changes XAVC-L Slog 3 in Premiere Pro

This has been discussed over in the other forum: FS5: FS5 flickering problem
__________________
www.ndavey.co.uk
Nigel Davey is offline   Reply With Quote
Old June 27th, 2016, 10:57 AM   #8
Major Player
 
Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 326
Re: Level changes XAVC-L Slog 3 in Premiere Pro

For me this looks like it's fixed in the 2015.3 version of Premiere Pro that has just been released.
__________________
www.leebergermedia.com
Lee Berger is offline   Reply With Quote
Old June 27th, 2016, 02:25 PM   #9
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Also make sure you have the original file structure intact including all the XML files etc as these contain information that tell the codec how to decode the footage correctly.
__________________
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   Reply With Quote
Old June 27th, 2016, 04:35 PM   #10
Major Player
 
Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 326
Re: Level changes XAVC-L Slog 3 in Premiere Pro

Quote:
Originally Posted by Alister Chapman View Post
Also make sure you have the original file structure intact including all the XML files etc as these contain information that tell the codec how to decode the footage correctly.
Thanks Alister. I did/do maintain the original file structure copying the "private" folder and all it's contents. The issue only occurred with Slog 2 and 3 and not standard gammas. Adobe admitted on their forum that this was an issue, and I believe fixed it in the current version of PP. I'm guessing that not everybody has experienced this error, but I seen it on several machines with my footage. Some others complained as well. BTW, I didn't see it at all on Slog XAVC-Intra from the F55. Only on XAVC-L. Furthermore, the same footage imported into PP 2014 played just fine. Anyway it's all moot now and I'm relieved.
__________________
www.leebergermedia.com
Lee Berger 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 > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony XDCAM PXW-FS7 / FS5

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:40 AM.


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