UX: Graticule: Vectorgraph

[bavc]

UX: Graticule: Vectorgraph

[clacinak]

+1

[richardpl]

This is what I came up with: its vertically flipped but I will probably add fliped texts so you could use vflip on output to get usual vectorscope:

[dericed]

Could the flip be an option of vectorscope? Similar to the lissajous options in avectorscope.

[dericed]

Both the 100 and 75% positions are off. See

ffplay -f lavfi -i testsrc=s=640x640,format=yuv444p,split[a],vectorscope=m=color4:g=color:f=name,scale=640x640,[a]vstack
ffplay -f lavfi -i smptebars=s=640x640,format=yuv444p,split[a],vectorscope=m=color4:g=color:f=name,scale=640x640,[a]vstack

Also I don't understand the difference between f=white or f=black.

thanks

[richardpl]

Use smptehdbars for bt.709, smptebars should match too but not for bt.709. Don't use ffplay, it likes to insert filters in random places in graph.
I use mpv avdevice://lavfi:smptehdbars,vectorscope...

[richardpl]

Black and white are different if you use x as 0 for example.

[richardpl]

The smptebars are slightly of because of smptebars bugs.
testsrc & testsrc2 do not use bt709 but 470bg primaries (for rgb to yuv in drawutils) and do not mark it as such in created frames.
If I properly mark them with zscale filter: zscale=min=470bg:m=470bg 100% color positions are on perfect positions.

[richardpl]

I just realized that default vectorscope in BigDisplay.cpp always uses 470bg locations, even for HD content, hopefully this is now resolved
Not all videos are properly marked or marked at all which matrix they use so it probably makes sense to add option for this, so one doesn't have to use another filter.

[dericed]

closing, based in @richardpl's great work on the graticules. Also the 470bg locations can be changed to 709 in the latest version.