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Old 27th June 2004, 20:31   #1  |  Link
Wilbert
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Analogue Capture Guide v4

The new version of the analogue capture guide is finally ready! This time a lot of stuff is added and rewritten. The guide can be found here:
http://www.doom9.org/index.html?/capture/start.html

A compiled chm file (4.2 MB) can be found here:
http://www.wilbertdijkhof.com/ACG41.zip

mirror:
http://www.stefanstrobl.at/doom9/ACG41.zip

If you want to print it, you can hide the search tab.
__________

I remember Doom9 once said: "a good guide is written in one day", I can tell you it was a *very* long day for us

The changelog is very large. A small summary

* There's a new introductory section about analogue video.

* There is a section on how to determine the active capture window and how to use that for resizing.

* The resizing section is splitted up in a part for newbies and for advanced users. The latter includes information about sampling, Nyquist and quality of the scalers of various capture cards.

* The VirtualDub postprocessing section has been completed (deinterlacing, color adjustment, etc.).

* Instructions how to remove clicks and scratches have been added.

* and a lot more ...

This version is written by trevlac, arachnotron, i4004 and me. So, I want to thank them for their help, patience and interesting discussions we had. I certainly learned a lot from that.

I hope you will like it, and learn from it. If you want to ask things, discuss things or simply give your opinion, please feel free to do that in this thread.

edit: for anyone who wonders why the link to section 17 VDub frameserving doesn't work (in start.html). The link is not correct:

http://www.doom9.org/capture/Frameserving.html

should be

http://www.doom9.org/capture/frameserving.html


edit: I replaced the link to version 4.1.

Last edited by Wilbert; 5th December 2009 at 16:14.
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Old 28th June 2004, 21:02   #2  |  Link
guada
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Very good job Wilbert
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Old 29th June 2004, 17:18   #3  |  Link
Incast
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A fantastic guide. Thanks!
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Old 30th June 2004, 03:12   #4  |  Link
North2Polaris
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trevlac, arachnotron, i4004 and Wilbert,



North
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Old 6th July 2004, 14:00   #5  |  Link
VILLA21
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Thanks for the extensive guide and the thorough analysis! A silly question, how can i print the whole guide (all the html pages) or at least, any chance for a pdf or doc file?
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Old 6th July 2004, 14:06   #6  |  Link
Wilbert
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Quote:
any chance for a pdf or doc file?
No, too much work

If it helps I can make a chm file, so that you can read it offline (and print it page by page)?
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Old 6th July 2004, 19:51   #7  |  Link
iradic
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i found your cap guide very good (old ver i have on my disk)...
i just quickly browsed manual and i have one question...

[removeeed]

thanks,

[edit] removed stupid questions ... sorry

Last edited by iradic; 6th July 2004 at 20:43.
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Old 7th July 2004, 02:06   #8  |  Link
ADLANCAS
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Very good guide!

Quote:
...you can read it offline ...
It should be nice.
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Old 7th July 2004, 08:13   #9  |  Link
VILLA21
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Quote:
If it helps I can make a chm file
Yes, sure...much appreciated!
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Old 7th July 2004, 20:34   #10  |  Link
Wilbert
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I added a download link to my first post!

Btw, for some reason the link is not working atm. I hope that's solved tomorrow.

Last edited by Wilbert; 7th July 2004 at 21:45.
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Old 8th July 2004, 08:29   #11  |  Link
lark
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minor typo

ciao,
is there actually a minor typo in the 1st example in the 5.6 (resizing) section
Quote:
So, remove 18 black pixels of your 702x576 cap.
shouldn't that be
Quote:
So, remove 18 black pixels of your 720x576 cap.
regards
t
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Old 8th July 2004, 09:22   #12  |  Link
Wilbert
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Yes, you are right. Well spotted!
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Old 8th July 2004, 09:34   #13  |  Link
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Hi Wilbert,

I just noticed that in section 6.3

http://www.doom9.org/capture/images/...ture_stats.jpg

seems to be missing.
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Old 8th July 2004, 13:12   #14  |  Link
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Quote:
Originally posted by Wilbert
I added a download link to my first post!

Btw, for some reason the link is not working atm. I hope that's solved tomorrow.
It"s ok today, downloading right now!
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Old 11th July 2004, 23:36   #15  |  Link
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Very good and complete guide - greate work!
But I am not impressed with description of my De-Spot plugin only as de-scratch tool.
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Old 12th July 2004, 09:32   #16  |  Link
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Quote:
But I am not impressed with description of my De-Spot plugin only as de-scratch tool.
Does it mean that you are disappointed because it is the only tool, or are you not impressed because there other descratch tools we forgot to mention?
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Old 12th July 2004, 09:54   #17  |  Link
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I think he means de-spot has other uses too besides desratching

But this guide was never intended to be an exhaustive guide to all the options of all filters available. It is merely a guide to get people started with common filtering tasks associated with analogue sources.
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Old 12th July 2004, 18:27   #18  |  Link
Fizick
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Sorry my English.
Yes,
Quote:
de-spot has other uses too besides desratching
In the introduction we may read about
Quote:
clicks (different words for this effect are sparklies, spots) on our screens
.
I think it is not very frequent, however quite
Quote:
common filtering tasks associated with analogue sources
.

I can post my more detail article analisys here.

1. There are no one picture which shows as filter works O.K.:
Pic.1 shows first source frame (vhs-source1line.jpg) with long horizontal drop-out,
Pic.2 shows second source frame with more short long horizontal drop-out,
Pic.3 shows as DeSpot successfully detect (mark) drop-line of first frame.
Pic.4 shows as DeSpot successfully detect (mark) drop-line of second frame.
Before Pic.5 there are text:
Quote:
We tried to do vhs drop-out fixing with this filter, but we had less luck with it. It seems that vhs drop-outs are too gentle for despot to find. The examples in
And Pic.5 again shows SOURCE frame 1. (The SAME vhs-source1line.jpg). Why you do not show CLEANED frame? I am sure, that if DeSpot detect and mark a spot, it MUST clean it (may be partially or with artefactes.)
Pic.6 show man without buttons (false cleaning).
Pic.7 show man with buttons (source).
It is of cource main faults of Despot.
But there are many parameters in the filter, for example we may control spot size, and spot brightness (only black for example).

2. I have some e-mail conversation with I4004 today. As he say, he use old version 1.0 of Despot (now lastest is v. 3.1 with many improvements).

3. I also ask I4004, why he does not try more appropriate filter for VHS line drop-out and descratch. I have such filter, may be you know. It has a name (surprise...) DeS˝ratch . It can originally to detect and clean only vertical scratch. But image may be rotated before and de-rotated after. I am not sure, that it will work, but why not try ?

4. I4004 probably will try Descratch and new vesion of Despot.

5. May be some article update must be done (later).

6. I am not "fizick", but "Fizick" !

Last edited by Fizick; 4th June 2005 at 00:00.
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Old 12th July 2004, 21:53   #19  |  Link
Wilbert
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Thanks for all your comments! I will talk with ivo about it, and update it in a next version.
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Old 12th July 2004, 23:03   #20  |  Link
Fizick
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O.K., I go to read (analyze) other parts of your article.

But the last my comment may (must) be edited now!

Last edited by Fizick; 12th July 2004 at 23:09.
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