[Cin] Is the Waveform properly calibrated ?
phylsmith2017 at gmail.com
Sat Nov 28 00:28:08 CET 2020
After some testing, I checked into GIT Andrew's waveform mod to add the
additional IRE 92.2% + 6.3% lines for the waveform. Interesting discussion
- past and present.
> I had forgotten all this complexity and the multiple distinctions
> > between the IRE values that only concern analog video and the Waveform
> > monitor (VideoScope) of Cinelerra-GG which only calculates % of the
> > digital 0-255 scale.
> > It's not easy to understand that a YCbCr source image (16-235)
> > corresponds to 6.3-92% on the Waveform grid, especially since there are
> > no visual cues on the grid to indicate this and to show the video level
> > overruns that could cause problems depending on the destination of the
> > editing ...
> I added (by trial and error!) those two lines ... they assume
> WAVEFORM_DIVISIONS 12
> but I guess they only valid for some types of footage and some setting of
> mpeg/jpeg toggle ....
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Cin