Scaling Thought

[Mark L. Pederson]

curious if EVEN number of SCALE has any impact on processing speed?

for example - if we take 4K 2:1 and put it in REDCINE for OUTPUT to 1920 x 1080 and select FIT TO HIGHT - we see the SCALE X & Y are 52.734 % -

so, would we see any real impact (of a HUGE job using FULL 4K debayer) by using CUSTOM SHOT FRAMING OF 54 % (which give a wee bit of Y pan and scan if wanted) ??

am I splitting hairs here ...?

Graeme ...?

 

[Graeme Nattress]

I didn't write the scaling for RedCine so I don't know. Scaling by factor 1/2 or 1/3 is generally easier in terms of coding than an arbitrary scale, but as I say, I didn't write that bit of code, and empirical evidence would be best - have you tested it to see?

Graeme

 

[Mark L. Pederson]

empirical evidence would be best - have you tested it to see?

Graeme

was hoping you'd save me the time - he he he

I'll test and report back - gonna assume it's pretty damn insignificant, but with full 4K debayer on one hour worth of media ... you never know, I am curious -

 

[David Birdy]

Wavelet compression

Wavelet compression

I didn't write the scaling for RedCine so I don't know. Scaling by factor 1/2 or 1/3 is generally easier in terms of coding than an arbitrary scale, but as I say, I didn't write that bit of code, and empirical evidence would be best - have you tested it to see?

Graeme

Graeme,

Wavelet based compression is one of the "High-Tech" solutions Jim & his RED team included in the REDONE. It's one of the reasons I purchased two REDONE's

I am under the impression that Wavelet compression is the most advanced and most efficient type of "Video" compression available today. I Know that Snell and Wilcox uses this compression scheme in many "High-end" Expensive converters, the Alchemist for one.


Can you comment on Wavelet based compression?

Thanks
Dave

 

[Rob Lohman]

Scaling (except for scaling in the output tab!) is done on the GPU, so we really don't take a hit (since it's faster than real time). However, the more things you do the slower everything gets. You don't get much for free

David: not sure how it relates to scaling, but yes is the answer to your post