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AntcuFaalb

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Join date
8-Jun-2012
Last activity
9-Feb-2025
Posts
4,267
Web Site
https://ssl.reddit.com/r/AMPSdeux

Post History

Post
#636071
Topic
Info: Comb Filter Testing
Time

althor1138 said:

Here is a clip of my Diamond Theater750HD PCI-E card. 

 

Wow, althor1138, that's awesome!

Can you post a short clip of a fast moving scene with some sharp scene-changes from one of your captures as well?

I'm interested to see if the Diamond Theater750HD exhibits any "checkerboarding" like my Panasonic DMR-ES10 does.

Actually, can you just post the last frame before a sharp scene-change and the first 1-3 frames after?

Thanks!

Post
#636057
Topic
Info: Comb Filter Testing
Time

I’m starting this thread so that I don’t have to hijack other threads to discuss comb filters! 😄

Here’s my review of the: Faroudja VP-100

Here’s my review of the: Panasonic DMR-ES10

We should probably come up with some kind of standard method of comparison.

PM me for a link to the m2v of the S&W Zone Plate from DVE!

If you own a DVD recorder or something fancier, please help out!

Post
#636053
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

DisgruntledFan said:

Antcu,

Since your source was a DVD player, it's output luma phase must have jumped 180 degrees between captures (a bit like pal).

Won't help you with LD captures, since the phase is already baked in.

I am surprised it canceled out so neatly. If you can get the same trick to work with a laserdisc capture - i'd be extremely surprised.

Some background before I ask my question: The Panasonic LX-900 runs the video signal through its own internal comb filter before recombining it for the composite out (i.e., the composite output is not "pure"). The simple 2D comb filter it uses is non-destructive, so it doesn't harm diagonal resolution like 2D adaptive ones do.

Since the LX-900's internal comb filter is non-destructive, I can recombine the signal outside of the player before passing it to a better comb filter. (This is what's currently being done, except I'd be doing it outside of the LX-900 rather than inside.)

What if I use my Panasonic DMR-ES10 to recombine the s-video signal? It non-destructively digitizes the input signal internally for its frame-sync/line-TBC to work, so wouldn't the DAC used to convert it back to analog change phase like my DVD player does?

Post
#635980
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

The two captures were taken with the exact same settings, hardware, everything. The conditions were identical.

I powered everything off and then on again before doing the second capture, however.

Small analog differences are the reason that the dot crawl and rainbowing artifacts cancel out.

You can see these differences more clearly by doing c1.Subtract(c2).

Post
#635807
Topic
Disney Acquires LucasFilm for $4.05 billion, Episode 7 in 2015, 8 and 9 to Follow, New Film Every 2-3 Years
Time

chyron8472 said:

So, again, if the Ewoks, Boba Fett's death and Lando aren't considered as the main issue, then I'm not sure what would be.

For the record: ROTJ is my favorite of the three.

Here are some ROTJ complaints I hear every now and then. They're listed in no particular order. They don't reflect my opinions and the italicized remarks are added for emphasis... or something.

1. Second DEATH STAR: El-cheapo, Georgo!

2. Reusing some special-effects shots from IV and V: Lazy Lucas, was lazy.

3. Leia is Luke's sisterOh, no! It's a shrinking universe!!!

4. Yub Nub: Not epic enough, dude. Like, totally!

5. The plan to rescue Han made no sense and would have resulted in giving Chewbacca, C-3PO, and R2-D2 to Jabba the Hutt for free if everything didn't go 100% as planned.

Post
#635804
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

I've tested a lot of comb filters, including 2D adaptive and 3D ones.

If you're accustomed to seeing the S&W Zone Plate with a 3D comb filter, then what you see may shock you (in a bad way). I ask you to keep your eyes on the averaged sample up top as much as possible. :-)

The averaged sample was generated with a simple c1.Merge(c2).

You'll notice a loss in diagonal resolution, but it's impossible to notice with real footage. Most 2D adaptive comb filters (like the Faroudja VP-100) lose diagonal resolution. You need a 3D comb filter to get it back.

Sample

Post
#635802
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

Spaced Ranger said:

AntcuFaalb said:

I was going to post two separate captures (of the same scene) to demonstrate the Faroudja VP-100 2D Adaptive Comb Filter and how averaging the two separate captures together looks indistinguishable from a 3D comb filter.

Very interesting. Please do! And I wonder if you'd post a sequence, from the worst possible example(s), of raw cap to individual 2D caps to combined-2D cap (in full-size PNG, if posting stills).

Do you want a test pattern or real footage?

JEDIT: test pattern posted.

Post
#635732
Topic
Random Thoughts
Time

greenpenguino said:

So one of the three Hard drives on my computer died, it was the main one that the system was installed on. Am rather miffed that a lot of stuff on there is now gone forever, but the most important stuff has been backed up and has been saved.

Dr. Bing O. Wings is right. Explore some possibilities via Google.

Post
#635721
Topic
Info: General Terminator 1 & 2 Discussions.
Time

dvdmike said:

AntcuFaalb said:

dark_jedi said:

What would you guys like to see on this for extras, not T2, just asking about T1 for now, we want to keep it to extras not yet released on BD, and just rare cool shit, see we are trying to figure out if this really needs to be a BD50, the encode now is at 30 Mbps AVG and is only 19.5 GB's, so if there is not much for extras then we should be able to encode it a just a little less and use a BD25 instead, so please share your thoughts and suggestions.

Thanks

*right now all we have is  the video, 2 audio tracks(LD PCM and DTS-HD MA 5.1) and the making of documentary, I am tossing around the idea of possibly making a custom Iso Score, but sometimes it is very hard to figure out where the tracks go lol, so I am not real sure on this.

Do you plan to include all the extras from the 2001 DVD? There's a ton of stuff on there.

Also, what did you think of the Drew Cummings "The Making of: Terminator" documentary I sent to you and You_Too? Was the quality good enough?

That one's never been officially released with any Terminator set. It also seems to focus on the special effects, unlike the two documentaries on the 2001 DVD.

I looked for that everywhere, it is elusive 

I just rented it for $1.99 from Amazon Prime and de-DRM'd it with iSkysoft.

You can order the DVD from Amazon, but it costs ~$15. o.O

Post
#635681
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

msycamore said:

EDIT: misread your post, I see you haven't access to your player at the moment. Well that testpattern posted over at lddb shows that you have really fine equipment, interesting thread.

I was going to post two separate captures (of the same scene) to demonstrate the Faroudja VP-100 2D Adaptive Comb Filter and how averaging the two separate captures together looks indistinguishable from a 3D comb filter.

Post
#635676
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

msycamore said:

AntcuFaalb said:

msycamore: Speaking of 3D comb filters, do you notice any checkerboarding on the first frame of a sharp scene/shot-change?

Unfortunately yes.

Which DVD recorder was used?

I'm testing the 3D comb filters in ones I come across (at thrift stores, etc.), so I like to keep a mental blacklist of what to not test.

Post
#635675
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

I can capture my THX 1138 LD when my Panasonic LX-900 gets back from the shop.

I use a 2D adaptive comb filter made by Faroudja: the VP-100. It has a chroma delay adjustment that I use to correct an ~1px chroma delay inherent to all LX-900s.

Two LX-900 => VP-100 captures averaged together exhibit no dot crawl and rainbowing whatsoever! It looks like I passed the LX-900 through the most advanced 3D comb filter in the world except it's artifact-free!

I know this is BigTalk™, but I can post some samples tonight to backup my statements, if you'd like.

Post
#635670
Topic
Harmy's STAR WARS Despecialized Edition HD - V2.7 - MKV (Released)
Time

doubleofive said:

I had a dream last night that Harmy released a clip of an all-new Cantina entrance. It had depth and a camera move, but the Cantina was now in a cave and had a row of dewback stalls next to it. I remember wondering how this was more like the original, but it was too cool to ignore.

Dreams of Harmy.

.

.

.

And I thought I was on OT.com too much!

Post
#635668
Topic
THX 1138 "preservations" + the 'THX 1138 Italian Cut' project (Released)
Time

msycamore: Speaking of 3D comb filters, do you notice any checkerboarding on the first frame of a sharp scene/shot-change?

The user poita and I have been looking at different 3D comb filters and we've seen this artifact a lot.

My Panasonic DMR-ES10 has an amazing 3D comb filter, but it exhibits an ugly checkerboard artifact on the first frame of any sharp scene/shot-change.

See more about the DMR-ES10 here: http://forum.lddb.com/viewtopic.php?p=33347#p33347

Post
#635666
Topic
Info: Films re-color timed on video releases
Time

Also, a warning wrt using ColourLike frame-by-frame.

If your target source has crushed blacks and blown-out whites, then these will show up after using ColourLike and it will be nasty.

I suggest using recolored.Merge(original) to reduce the impact of the recoloring by 50%. You can, of course, adjust the percentage to something less than 50%, but be careful.

Post
#635665
Topic
Info: Films re-color timed on video releases
Time

For doing ColourLike frame-by-frame, try this:

function ColourLikeFrameByFrame(clip c1, clip c2)
{ # Color-matches c1 to c2, frame by frame.
  # Assumes c1 and c2 are the same length and are
  # both compatible with ColourLike.
  global c1 = c1
  global c2 = c2
  return c1.ScriptClip("""
    ca = c1.Trim(current_frame, -1)
    cb = c2.Trim(current_frame, -1)
    ca.WriteHistogram("hist1.txt", 1)
    cb.WriteHistogram("hist2.txt", 1)
    ca.ColourLike("hist1.txt", "hist2.txt")
    """)
}

Post
#635664
Topic
Info: General Terminator 1 & 2 Discussions.
Time

dark_jedi said:

What would you guys like to see on this for extras, not T2, just asking about T1 for now, we want to keep it to extras not yet released on BD, and just rare cool shit, see we are trying to figure out if this really needs to be a BD50, the encode now is at 30 Mbps AVG and is only 19.5 GB's, so if there is not much for extras then we should be able to encode it a just a little less and use a BD25 instead, so please share your thoughts and suggestions.

Thanks

*right now all we have is  the video, 2 audio tracks(LD PCM and DTS-HD MA 5.1) and the making of documentary, I am tossing around the idea of possibly making a custom Iso Score, but sometimes it is very hard to figure out where the tracks go lol, so I am not real sure on this.

Do you plan to include all the extras from the 2001 DVD? There's a ton of stuff on there.

Also, what did you think of the Drew Cummings "The Making of: Terminator" documentary I sent to you and You_Too? Was the quality good enough?

That one's never been officially released with any Terminator set. It also seems to focus on the special effects, unlike the two documentaries on the 2001 DVD.