[Tig] RE: Compressed Grade Transfers

Grant Petty grantpetty
Sun Nov 4 23:17:23 GMT 2001


This is a topic I thought about a few years ago. I was considering 
building up an SDI device to add a specific gain to the video signal so 
it would "enhance" the grade.

So the idea was we could put these in the telecine monitor SDI video 
line, and you would see an enhanced version of what you were really 
grading, but in reality, the grade would be flatter down on tape.

We could then put the same devices in the edit suites, to make the 
images look the same as the telecine suite, but the edited video would 
also flat.

The idea is the clients and the editors would see a fairly normal 
looking grade, but there would be a lot more detail in the video signal. 
Then when a tape to tape grade was done, there would be a lot more 
detail in the blacks and whites available to grade with.

I think basicly the SDI video interconnect was specified to transport 
images for viewing, but this product was to try and redefine the levels 
for a basic form of film data transport via 10 bit video.

The device would be digital and connected via SDI, so the gain amount 
could be standard throughout the building, and the box's would not drift.

I never really got around to it though, as I was to busy building 
uncompressed video cards at the time!

Perhaps someone else might want to make a product like this.


Grant Petty.
Blackmagic Design.

On Monday, November 5, 2001, at 10:51  AM, Dominic Case wrote:

>> filmmakers
>> who may lack
>> the funds to pay for full color correction during the
>> telecine process.
> The only problem is that the first transfer looks dull and lifeless 
> (it's
> not meant to look good), and you often get producers upset that they 
> have to
> "pay again to have the colour grade fixed up - why didn't they get it 
> right
> the first time?".

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