Posts: 945
Threads: 69
Joined: 2018 Feb
Thanks: 594
Given 954 thank(s) in 352 post(s)
Country:
2022-12-22, 05:58 PM
(This post was last modified: 2022-12-22, 05:59 PM by bronan.)
So I have an NTSC film laserdisc (29.97) that seems to have been made from a sped up PAL master, and I'm wondering what my options are. The laserdisc is about 5 minutes shorter than it should be (1h40 instead of 1h45), and the audio is also higher pitch than normal. Right now I'm just using:
disc = AVISource("E:\movie.avi")
\.ConvertToYV12()
\.TFM()
\.TDecimate()
\.Levels(16, 1, 255, 0, 255, coring=false)
\.Crop(8,2,-6,-2)
\.Spline36Resize(640, 480)
This of course just gives me NTSC film framerate, but everything is the same length and speed as before. Perhaps AssumeFPS could work to slow it down before applying decimation?
Posts: 150
Threads: 9
Joined: 2021 Oct
Thanks: 21
Given 30 thank(s) in 26 post(s)
Country:
You could use Audacity to fix the audio.
I believe you can change speed and pitch.
Posts: 1,835
Threads: 45
Joined: 2016 Dec
Thanks: 132
Given 792 thank(s) in 484 post(s)
The only LD I have come across like this was my JP release of Nightbreed, it was PAL speed but interlaced as NTSC with blended fields, so IVTC didn't work. In the end I did a basic deinterlace.
Years ago there was an avisynth script for deblending, I think it was called srestore? I could never get it to work on my system as there were too many additional filters needed, which would throw all sorts of errors.
Posts: 957
Threads: 28
Joined: 2015 Jan
Thanks: 702
Given 350 thank(s) in 226 post(s)
That sounds like time compression which was sadly ultra common on US discs in the earlier days of the format. It lasted through the late 80’s and affects even some big name titles. Some got stuck this way even on reissues for a while.
Damn Fool Idealistic Crusader
Posts: 2,174
Threads: 29
Joined: 2015 Apr
Thanks: 1629
Given 307 thank(s) in 267 post(s)
Country:
Yeah the first PAL release of star wars I have has time compression