Tuesday, February 28, 2012

Re: [Avid-L2] Re: Center Duration 1 fame 1 frame longer duration than time code calculator?

 

eer, not in my book.
VITC matches the LTC, and describes the current frame.

Bouke (who wrote a software VITC reader for Avatar...)

VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN
The Netherlands
+31 24 3553311
www.videotoolshed.com
For large files:
http://dropbox.yousendit.com/BoukeVahl998172

----- Original Message -----
From: "Jay Mahavier" <jay_mahavier@earthlink.net>
To: <Avid-L2@yahoogroups.com>
Sent: Tuesday, February 28, 2012 10:51 PM
Subject: Re: [Avid-L2] Re: Center Duration 1 fame 1 frame longer duration
than time code calculator?

in tape based editing the out point is exclusive. To check this just make a
standard EDL and start checking the numbers. The TC information is held in
the vertical interval of the frame. The vertical interval precedes the
video information. The trigger for the computer (video deck or deck
controller) to execute the event is when it reads the TC. So you enter the
TC information that follows the video frame you want to be your last frame
of the event.

Jay

On Feb 28, 2012, at 3:36 PM, johnrobmoore wrote:

> In linear edl style the outpoint is the "Next" frame to be recorded. That
> one frame difference is a constant point of confusion when people use edls
> and then type those numbers into avid timelines and see a duratin 1 frame
> greater. Frame 0 is a frame was the way to phrase it which makes it valid
> to subtract the frame before the first frame. Thanks.
>
> --- In Avid-L2@yahoogroups.com, "bouke" <bouke@...> wrote:
>>
>> Few things not to forget.
>> Frame 0 is a frame. So from 0 to 10 is 11 frames
>> But counting up to 10 starts with 1, as 0 is normally void (how many
>> apples
>> do you count in your basket if you have none?)
>> But how many numbers do you have in your basket if there is only a zero
>> to
>> be found?
>>
>> Now for TC, this duration madness at the end is not as it used to be, as
>> the
>> calculation was done UP to, meaning, your outpoint was the frame NOT to
>> insert.
>> (in the lineair world you would put your outpoint on the frame you wanted
>> to
>> keep, remember?)
>>
>> Bouke
>>
>> VideoToolShed
>> van Oldenbarneveltstraat 33
>> 6512 AS NIJMEGEN
>> The Netherlands
>> +31 24 3553311
>> www.videotoolshed.com
>> For large files:
>> http://dropbox.yousendit.com/BoukeVahl998172
>>
>> ----- Original Message -----
>> From: "John Moore" <bigfish@...>
>> To: "Avid L2" <Avid-L2@yahoogroups.com>
>> Sent: Tuesday, February 28, 2012 9:29 PM
>> Subject: [Avid-L2] Center Duration 1 fame 1 frame longer duration than
>> time
>> code calculator?
>>
>>
>> This is probably true regardless of the project type but in an HD 23.976
>> 1080P project if I mark in at 1:00:00:00 and mark out 1:03:00:00 I get a
>> center duration of 3:00:01. If I subtract the mark in from the mark out
>> using the time code calculator I get 3:00. I know I always end an act on
>> a
>> ;29 frame in the drop frame 29.97 world so I think I understand what's
>> going
>> on. I guess I should treat the frame before the mark in e.g. 00:59:59:23
>> as
>> the time code I should subtract from the end time code when going the
>> time
>> code calculator route. I just don't remember ever having done that in a
>> 29.97 df world but maybe I just didn't notice or think about it.
>>
>> John Moore
>>
>> Barking Trout Productions
>>
>> Studio City, CA
>>
>> bigfish@...
>>
>> [Non-text portions of this message have been removed]
>>
>
>
>
>
> ------------------------------------
>
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>
>

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