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Post #661731

Author
spoRv
Parent topic
Info: A mysterious 1997 SE capture with no pink shift...
Link to post in topic
https://originaltrilogy.com/post/id/661731/action/topic#661731
Date created
24-Sep-2013, 1:52 PM

Today I was joking with my new upscaling script, I found an old test capture file, and I said myself “Why not? Let’s test it too!”.

After I finished, I noted that it could be a 1997 SE capture… “it can’t be, it has no pink shift, it SHOULD be a OT capture!”… as I deleted all my SE and OT captures (sigh!) I played my own OT project, but something was wrong… apart different color grading, cropping were different… “can it be REALLY a SE capture?”

So, I managed to make a direct comparison, and here you are the screenshot:

think that when I made my project, I did it comparing it frame by frame with the GKAR version, and mine was waaay less pink than it…

So, I wonder, how is it possible? Sherlock Holmes should come to solve this mistery… (^^,)

Here you are some facts:

  1. the test capture was captured in RGB, using DScaler instead VirtualDub, and is PAL
  2. I captured all the laserdiscs I used for my project with VirtualDub, HuffYUV, all of them are PAL
  3. I don’t remember which laserdisc I used for the test capture…
  4. …and which laserdisc player - maybe a different one than what I used for the projects, as I have several
  5. I usually left capture level settings (brightness, contrast etc.) at default - not sure 100%, but around 99%…

and some speculation about them:

  1. I don’t think capturing in RGB should make some difference, but I strongly suppose that using DScaler instead VirtualDub could
  2. or could be the HuffYUV fault… maybe VirtualDub’s wrong settings, but I can’t suppose which one could lead to such results
  3. it doesn’t matter which laserdisc I used, as for my project I used EVERY PAL SW laserdisc I have… all of them!
  4. but, probably, not every combination of laserdisc/laserdisc player… and, I should admit is it possible I used a DVD recorder as comb filter for that test (that I have not used with my projects…), but is not probable, as I did DVD recorder tests after the test capture card!
  5. I’m almost sure even if I touched settings, it will be not possible to completely defeat pink shift…

Well, if I will ever find the cause of the really good results of the test capture, and if I will be able to repeat it, then I could really really think to remake the 1997 SE project based on laserdisc - even if it seems there is no interest in it…