Spud's Ripping Tips v0.1
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Author:  spudthedestroyer [ Wed Jul 26, 2006 9:46 pm ]
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To be honest,if you use gknot, its not that hard to get the AR right within tolerance. If you've got matting, its probably going to be ITU-R checked, although I'm not sure that's all the time. With anamorphic 've always had to leave it unchecked. Resolution is tightly controlled, but you may want to breach the "safe" 32x divisible rule, its largely not needed beause of cpu power these days. Sometimes the freedom of 16x horizontal divider gives you a bit more freedom :)

Author:  ^Rogue^ [ Fri Jul 28, 2006 8:27 pm ]
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I'm having a problem with Hellraiser III: Some footage is interlaced while ~95% of the movie is progressive. How do I deinterlace only the parts that need deinterlacing and leave the progressive parts untouched? Can this be done with Telecide? Or is there a way to define ranges in the avs?

Normally, I use 32 horizontal and 16 vertical divider btw.

Author:  spudthedestroyer [ Fri Jul 28, 2006 8:51 pm ]
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You can define a range like this:
# JDL_ApplyRange
#   Applies a filter to the specified range of frames in a clip.
#   This function is intended primarily for use with AviSynth 2.0x (an
#   internal ApplyRange function was added in AviSynth 2.51).  However,
#   this function offers the following advantages over the internal
#   version:
#   * directly supports filters that take no arguments
#       (fixed in AviSynth 2.55)
#   * supports named filter parameters
#   * allows the range to be of length 1 (fixed in AviSynth 2.52)
#   * allows audio modification (fixed in AviSynth 2.52)
#   Do not use this with filters that modify the frame count.
#   start, end : The filter will be applied to all frames in the range
#                  [start, end].
#   thunk      : The action to perform on the specified frames.
#   JDL_ApplyRange(123, 456, "Tweak(sat=1.1)")
function JDL_ApplyRange(clip c, int start, int end, string thunk)
    Assert(start >= 0 && start <c>= start && end < c.FrameCount(),
    \      "JDL_ApplyRange: end frame out of bounds: " + String(end))

    filtered = Eval(thunk)
    Assert(c.FrameCount() == filtered.FrameCount(),
    \      "JDL_ApplyRange: should not be used with filters that modify the frame count.  "
    \      + "Use JDL_ApplyRangeOld instead.")

    seg1 = c.Trim2(0, start)
    seg2 = filtered.Trim2(start, end + 1)
    seg3 = c.Trim2(end + 1)

    return seg1 + seg2 + seg3

import that script and call.

or like


set = last

C0 = set.LanczosResize(xxx,yyy)
C1 = set.LanczosResize(xxx,yyy).LimitedSharpen(ss_x=1.0,ss_y=1.0,Smode=4,strength=20)
C2 = set.LanczosResize(xxx,yyy).dehalo().LimitedSharpen(ss_x=1.0,ss_y=1.0,Smode=4,strength=40)


Obviously substituting in what your doing to each.

There's probably an easier way though.

Author:  ^Rogue^ [ Sat Jul 29, 2006 12:47 am ]
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spudthedestroyer wrote:
There's probably an easier way though.

Thanks, at least I have a way of getting it done now.

I'm still looking for something that will identify the interlaced frames automatically and apply deinterlacing where needed. Finding those interlaced frames and setting the ranges manually will surely be a pain in the ass. I still hope I won't have to do that.

And applying a deinterlacer to the entire movie is a no no, since it would unnecessarily degrade quality. Most of the time I use Seperatefields/Bob/Selecteven btw.

Author:  Vae Victis [ Sat Jul 29, 2006 9:13 pm ]
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I have a couple of questions.

Is it considered bad practice fondling an audio file?
Like remove hissing and scratches?
If not how would someone do that the best way?
Currently I've converted the original ac3 file to wav.
Edited the wav in Cool Edit Pro (Insert Silence at scratch in this case only 1 spot for a couple of miliseconds, and apply hiss reduction on whole file)
And converting it into a cbr mp3 file for use with movie.

But I would understand that it's unwanted cause of possible reducing the quality of the audio track.

<s>I have a dvd which has a frame rate of 20.
This is in dvd2avi, but it does show the correct amount of frames and if you calculate that with total time you get a frame rate of 25.

What would be the correct way to deal with this?
I've tried to edit the .d2v file and change the amount of frames to 25, and open that with gknot and convert it into an avi.
What gknot does, (shows wrong amount of frames, I enter the correct amount) it gives a warning that the amount of frames isn't correct and starts doing corrections to the bitrate etc.
Which leaves me with a smaller file.

Am I missing something?</s>
:matrix: default force film #$78@#

Author:  spudthedestroyer [ Sat Jul 29, 2006 10:07 pm ]
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Is it considered bad practice fondling an audio file?

Generally, yes. Leave it alone.

If your doing a VHS rip, or a capture and there's a noise then you could try processing it in something like Goldwave. Here your liable to have interferance and what not so what you have is an aproximation and liable to be bad anyway.

For DVDrips, I would just leave them, or if the ac3 is that bad, you'll be re-encoding to a very lowbitrate mp3 in the end anyway. I would suggest attempting to process the track and dampen the noise if its really that bad, but only for the segments where there is noise (highlight and process that alone). The only problem is your sound is muffled then.

But this should only really be done with terrible sound quality, like a pirate dvd. I really don't think fondling the track for minor problems unless you really can isolate the processing to tiny segments.

oh and use vbr/abr instead of CBR since you get a smaller file with better quality sound, there's no point in using cbr.

I guess it all depends on what your re-encoding.

ps. yes, fps will never be 20fps... don't worry, i remember str releasing a butt load where they messed up doing the same thing too :lol:

Author:  Vae Victis [ Sat Jul 29, 2006 10:40 pm ]
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Problem is that the noise is constant.
Maby an example will explain it better than I can:
with noise: http://www.comic-central.cc/tmp/slot.withnoise.mp3
without: http://www.comic-central.cc/tmp/slot.withoutnoise.mp3
Both are just small parts, about 1.23MB

In here you can clearly <s>see</s> hear the hissing
I myself can't hear a difference (except hissing) between both.

I've just seen the movie today with hissing and found it to be rather anoying really. Thats' why I wanted to see if it's okay to dehiss it.

I'll see if I can do vbr instead of cbr, always had synch problems with that when I used it before.

I've also looked into the removenoise tip you gave me, which is rather difficult to grasp.
So it will take me some time longer to do this :lol:

Author:  spudthedestroyer [ Sat Jul 29, 2006 10:50 pm ]
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to be honest the background noise isn't that bad, I can tolerate worse, and the clicks are there in both.

Second one sounds slightly hollow, however if your listening to both of them on a loud volume then the second one is indeed probably better. I don't have that many objections to re-encoding if you don't tell me, i probably wouldn't notice anything wrong if you snuck it in.... i'll put it that way :lol:

As for VBR. Save your processed files as uncompressed WAVs, then use besweet to encode to mp3 VBR/ABR. You do this on the audio tab, under the save and encode step in gknot (the real one). Just load your wav (make sure the filename matches what your original wav/ac3 was since it grabs the delay from the filename ;) ) select an option and type a bitrate in the box :) Shouldn't go out of sync then.

Author:  El Mariachi [ Wed Sep 20, 2006 4:35 pm ]
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If you have a DVD that contains R Rated and Unrated versions on 1 Disc. Both mixed into VOB files. How to take the Unrated version.

I get blocky shit when I preview it in gknot, also the scenes seem to jump back and forth and repeat itself.

My rip is 17 minutes longer too.

Also in DGIndex when I save the d2v file you can see the VOB Cell ID's count weird, sometimes go back and forth as well.

Is there a FAQ on these matters on some site?

Spooky stuff.

Author:  spudthedestroyer [ Wed Sep 20, 2006 7:29 pm ]
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Aren't you ripping via IFO streams in dvddecrypter, i thought they contained all the appropriate references to the vobs?

You'd be best asking at doom9.org or dvdrhelp.com on such specialist questions.

Author:  elchupacabra [ Fri Nov 30, 2007 1:36 pm ]
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I've found these nice illustrated guides for GKnot:

There is also a PDF version. :bliss:

Author:  BadBugs [ Fri Nov 30, 2007 4:50 pm ]
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Theres a few factual errors in that DVDtoAVI guide, theres one on DD too: http://forum.dead-donkey.com/viewtopic.php?t=15117

Author:  elchupacabra [ Fri Nov 30, 2007 6:20 pm ]
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Could you point the errors out? I've already seen your guide. :wink:

Author:  BadBugs [ Fri Nov 30, 2007 6:45 pm ]
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The most important & biggest error on that guide is to decrypt in IFO mode, doing so doesnt rip the DVD to the exact size VOBs & has been proven to give you a rip that looks like a 2yr olds crayon drawing.
Don't get me wrong, I like how it explains about how to set up 2 pass encodes but its well out of date with the internals of the latest versions of each of the codecs & I've not explained how to do this in detail in my guide as its only basics for beginners. :wink:

Author:  spudthedestroyer [ Sat Dec 01, 2007 5:49 pm ]
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They choose divx over xvid... that why i stopped reading :lol:

Author:  BadBugs [ Sun Dec 02, 2007 4:02 am ]
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Theres another big fault that I'[ve noticed, how it handles DGIndex & its advice on how to use it.. fuck using forcefilm unless its a 95%Film rip, that guide is out of date big time & youre best following my guide that uses spuds tips & posting questions in this thread or mine :wink:

Author:  elchupacabra [ Sun Dec 02, 2007 10:28 am ]
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spudthedestroyer wrote:
They choose divx over xvid... that why i stopped reading :lol:

Maybe you should continue reading and you'll see that both DivX and XviD are covered. :wink:

Author:  spudthedestroyer [ Sun Dec 02, 2007 5:56 pm ]
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elchupacabra wrote:
spudthedestroyer wrote:
They choose divx over xvid... that why i stopped reading :lol:

Maybe you should continue reading and you'll see that both DivX and XviD are covered. :wink:

No shit shurlock but they clearly say Divx is better and their preference:

Another reason that we prefer DivX is because it has less compatibility issues with standalone MPEG4 dvd players.

That article is a couple of years out of date. Any guide that favours divx will be several years old, it a good indicator of whether you should bother continuing to read ;)

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