Where does timecode derive from? at DVinfo.net
DV Info Net

Go Back   DV Info Net > Cross-Platform Post Production Solutions > CineForm Software Showcase

CineForm Software Showcase
Cross platform digital intermediates for independent filmmakers.

Reply
 
Thread Tools Search this Thread
Old August 18th, 2010, 04:21 PM   #1
Trustee
 
Join Date: Sep 2003
Posts: 1,435
Where does timecode derive from?

David, Canon 7D original MOV files do not seem to have any timecode (readable by Premiere CS5, anyway.)

However, after conversion by HDLink to CFHD, they do display timecode that seems to be correct with up to 1 second precision (because clips always start with the whole second plus :00 frames.)

Where does HDlink get that timecode from?
Alex Raskin is offline   Reply With Quote
Old August 18th, 2010, 05:09 PM   #2
CTO, CineForm Inc.
 
Join Date: Jul 2003
Location: Cardiff-by-the-Sea, California
Posts: 8,095
We use the timestamp stored in the THM file, it is only accurate to the nearest second.
__________________
David Newman -- web: www.gopro.com
blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman
David Newman is offline   Reply With Quote
Old August 18th, 2010, 05:15 PM   #3
Trustee
 
Join Date: Sep 2003
Posts: 1,435
I'm trying to devise a system where Canon 7D's internal clock is sync'd with a PC running SiliconDVR, and thus two cams are sync'd.

However I get issues with 7D footage's TC being only up to 1 sec precise, just like you said.

Now, this guy:

VideoToolShed - QtChange

says that THM is supposed to be up to 1/100s of a second precise.

My personal experience is this:

1. all 7D MOV files converted via HDLink start with :00 frames timecode

2. but when THM file is present, timecode does display frames.

So... is THM precise up to 1 sec or 1/100s of a sec??

and... where does timecode come from in #1 above when there's no THM files??

Thanks.
Alex Raskin is offline   Reply With Quote
Old August 18th, 2010, 05:37 PM   #4
CTO, CineForm Inc.
 
Join Date: Jul 2003
Location: Cardiff-by-the-Sea, California
Posts: 8,095
Sorry, you are correct. We use the extra accuracy of the THM files when present, and you do get a frame number in the timecode field (I just checked.) Without the THM file we use the file create date, which is only 1 second accurate.
__________________
David Newman -- web: www.gopro.com
blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman
David Newman is offline   Reply With Quote
Old August 18th, 2010, 05:47 PM   #5
Trustee
 
Join Date: Sep 2003
Posts: 1,435
Many thanks, David.
Alex Raskin 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...

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

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


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 > Cross-Platform Post Production Solutions > CineForm Software Showcase

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 04:19 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network