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GOUT was not “weave” deinterlaced, it was “bob” de-interlaced.
still gathering additional evidence, but I’m about 95% sure.
-G
Info: New GOUT revelation
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EDIT: I didn't know what you meant so I did a bit of digging. The 'weave' method is generally considered to be superior in most cases, correct?
Will you be altering your stabilization scripts now, or is that totally unrelated?
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Can you explain exactly what you mean?
If the video on the master tape was telecined 29.97fps:
- A 'bob' would give a result 59.94fps.
- A 'weave' would leave the fps unchanged at 29.97.
- An inverse telecine (IVTC) to remove the 3:2 pulldown would result in a framerate of 23.976fps.
The framerate of the GOUT is 23.976, so IVTC has been carried out. Are you suggesting that it was bobbed afterwards then every other frame discarded? This would explain the vertical blur that is present.
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Moth3r said:every other frame discarded? This would explain the vertical blur that is present.
Yep.
Half of the vertical resolution was thrown away. It also accounts for all of the aliasing. Conducted additional experiments last night, and now I'm about 99.99% sure.
-G
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Mielr said:EDIT: I didn't know what you meant so I did a bit of digging. The 'weave' method is generally considered to be superior in most cases, correct?
Will you be altering your stabilization scripts now, or is that totally unrelated?
Unfortunately, the damage is done, and the best that can be done after such an event is already in the script.
-G
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Ouch.
Glad my friend got me the 1993 LDs, then.
"Right now the coffees are doing their final work." (Airi, Masked Rider Den-o episode 1)
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This begs the question: Why? Is this problem on the LD, or did they deliberately cripple the DVDs?
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I wouldn't be surprised in the slightest if it turned out that they indeed deliberately cripple the GOUT.
Nice job, Georgey. You've done it again.
Who's the more foolish... the fool who makes or the fool who buys this crap?
- George Lucas on the 2004 SE DVD's
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Well that explains alot, and no I am not suprised.
Beacuse I have seens some DVD's that come from LD masters and they aren't to bad.
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Has anyone ever attempted a project to merge an LD capture with the GOUT video on the field level? I wonder if it's possible to reconstruct frames and get a bit more detail/vertical resolution without introducing to much analog noise. Of course, even if such an avisynth script was possible, it would be a huge project, manually aligning every shot (every frame?) and color correcting to match.
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Well comparing the vertical details from the X0 project and another X0/X9 LD capture, in these screenshots the GOUT appear to have the same vertical resolution as the LDs.
GOUT
X0 project
GOUT
other X0 or X9 capture
But I agree there are some other shots/scenes/areas in the GOUT where the vertical resolution seems to be cut in half, but I would suspect it was caused by a crude AA filter and to some degree incomplete (lazy) IVTC work.
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Playing devil's advocate here: Is there any legitimate reason for them to have done this? Did they think it might reduce the grain?
I just find it hard to believe that they would have gone through the extra trouble to actually make it worse.
You know of the rebellion against the Empire?
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g-force said: Half of the vertical resolution was thrown away. It also accounts for all of the aliasing. Conducted additional experiments last night, and now I'm about 99.99% sure.-G
The aliasing is present on the LDs too, though (especially on SW). How does that figure in?
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Okay, after seeing Red5's screen caps, I retract all previous statements. The aliasing is in the master tape then, if it's in both the GOUT and the X_ captures.
Shoot, I really thought I was on to something. I was under the impression that there was much less aliasing in the laserdiscs, and if the aliasing was a symptom of bob de-interlacing, that would imply nearly twice the resolution in the laserdiscs. Looking at those screencaps, that is definitely not the case.
Sorry to confuse everyone.
-G