How to avoid scenes cut combed frames on capture?

[ELinder]

When I capture with the VCR line TBC on the scene cuts are nice, moving from one frame to the next. However, when I capture with the VCR line TBC off (for video stabilization reasons) even going from VCR to EC15 and then to full frame TBC, I get a frame of combined fields from the current and next angle resulting in a noisy flash when playing. Is there a way to avoid this?

Erich

[ELinder]

Same scene, same hardware, but with the VCR built-in TBC active and clean frames on each side of a scene cut. I can't always capture with it on due to other artifacts introduced.

Erich

[msgohan]

Almost a year later, I accidentally found this thread. The issue is easily fixed with one line in Avisynth. Some sort of field order shift (or field dominance reversal?) -- I'm a bit too tired to fully think it through and explain it. Similar to the shift in the thread " http://www.digitalfaq.com/forum/vide...html#post64266 " but not exactly.

All you need:

SeparateFields().Trim(1,0).Weave()

To actually perfectly align the two samples spatially and temporally:

AVISource("TBC-off-angle-cut.avi").AssumeTFF()
SeparateFields()
Trim(1,0)
Weave()
Subtitle("-TBC")
V1 = last

AVISource("TBC-on-angle-cut.avi").AssumeTFF()
Trim(1,0)
SeparateFields()
ConvertToYV24().AddBorders(3,0,0,0,color=color_white).Crop(0,0,-3,-0).ConvertToYUY2() # need 4:4:4 to do odd-numbered horizontal crops
Even = SelectEven().Crop(0,1,-0,-0).AddBorders(0,0,0,1,color=color_white)
Odd = SelectOdd()
Interleave(Even,Odd)
AssumeBFF().Weave()
Subtitle("+TBC")
V2 = last

Interleave(V1,V2)

The VCR's TBC/NR smears detail a bit. If you open these in tabs and flip between them you should see it.
ELinder -TBC.png

You must be logged in to view this content; either login or register for the forum. The attached screen shots, before/after images, photos and graphics are created/posted for the benefit of site members. And you are invited to join our digital media community.

[ELinder]

Thanks, I'll take a closer look at what you did, although this turned out to not really be a problem other than for that one case that I posted.

Erich