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Darth Mallwalker

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Join date
25-Sep-2004
Last activity
29-Dec-2017
Posts
1,376

Post History

Post
#690344
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

happycube said:


On CAV laserdiscs, there is a "white flag" on lines 11 and 274 (or 22 and 23?) that indicate the first field of a new frame. Also, the frame # is put in the first field. MAME has some good decoding code for that.

So if you can get VBI data, it would be possible to automatically construct an avisynth pulldown script.

Unfortunately, the white flag data isn't on CLV disks, since the LD-V8000 was the only player made that could process them. In fact, per blamld the speedup process used didn't tie in with white flag creation - Fox's original plan was to do a 4-sided time-compressed CAV disk!

JSC white flag (LD-V8000)
http://i62.tinypic.com/snz2vr.png
Good luck with that!

déjà vu
all over again

Post
#686358
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

Darth Mallwalker said:


Here we keep the top half of the broken field, and apply nnedi to the bottom half: http://img542.imageshack.us/img542/148/nnedi264.png
stackVertical( crop(0,0,0,240), crop(0,240,0,0).nnedi2() )
You could tweak the 240 of course. It seems to be different for each capture (Dark/Sega, X9, HF9G)


http://i58.tinypic.com/2s9bwug.png
c156106 =\
stackVertical(c156106.crop(0,0, 0,268)\
, nnedi2(c156106).crop( 0,268, 0,212))

JSC ANH script

Post
#685251
Topic
First time capturing Laserdisc video - Please help me?
Time

clenchdwarf said:

Or, add a board which translates the available digital audio signals into S/PDIF.

^It almost worked.
I tried that a few years ago, using a DIT4096 circuit.
I did get some sound out of it, but it had hiccups-- wasn't bit-perfect.
When I attached that same board to two other devices (one CD, one LD) they worked fine,
but not the V8000. Never figured out why.

Ended up getting a CLD-S201, which also contains 'unused' CXD2500 chip like your Hitachi,
then added S/PDIF port to that.

Post
#679464
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

althor1138 said:


I've tried to IVTC the 82 P&S but the cadence is crazy and I can't really figure it out.

For most of the movie, the pattern is
...2 2:3:2:3:2:3:2:3:2:2:3:2:3:2:3:2:2:3:2:3:2:3:2:3:2 2...
In other words, 25 frames comprise 61 fields.
It's IVTC-able using ...doubleWeave.selectEvery(61, ...plus twenty-five parameters)

Reel6B is the exception to that rule.
Seems like the masterers were worried that reel might not fit on the end of Side 1,
so they cranked the speed up a notch to squeeze it in.
It's faster than the rest of the movie.
I haven't cracked the pulldown cadence for Reel6B yet.


JSC ANH script is almost there



Post
#676945
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

There's IVTC scripts for JSC sequels
ROTJ
ESB
I'll post them on usenet too, after I tackle ANH.

Like my ESB alpha version posted here last Spring,
each time pulldown() is called I've also given alternate parameters in the comments.
The difference is in the handling of 3-field frames.
You can choose to keep the first 2 fields or keep the last 2of3.
With ESB I followed althor's choices. ROTJ is mostly arbitrary.
As always, use a text editor with fixed-width font