Help De-interlacing another DVD and fixing aspect ratio

[Akuma786]

Hi I have a DVD which i want to deinterlace and convert the 29.976FPS to the original FPS. I also like to fix the aspect ratio as DVD is in 4x3 and image maybe stretched. Also like to to improve on the picture quality.

https://www.swisstransfer.com/d/a3c7aeb0-723d-4433-8772-900758398927

[Selur]

Some suggestions after a quick glance:
interlaced handling: QTGMC(preset="fast") + SelectEven()
rainbows: SSIQ
halos: DeHalo_alpha
chroma shift: ChromaShiftSP(X=-2.5,Y=-2.5)
scratches&co: SpotLess adjusted by scene (maybe mask)
additiona border fixes: after cropping BlanceBorders, i.e. "bbmod(clip, cLeft=0, cTop=8, cRight=0, cBottom=8)"
aspect ratio: PAR signaling seems correct, seems straight forward, crop and resize to 1:1 PAR (if you want to increase resolution, keep that DAR and upscale further)
not sure about the general

Cu selur

[Sharc]

Just a quick shot, reverting to the proposals which you have been given in your former threads. Why don't you try and optimize yourself?

[StuartCameronCode]

Check out VapourBox, it'll rip from DVD, auto-detect this exact scenario and set most of the parameters you need automatically. There's other filters you can also apply.

[Sharc]

Check out VapourBox, it'll rip from DVD, auto-detect this exact scenario and set most of the parameters you need automatically. There's other filters you can also apply.

Why not post an example?

[Akuma786]

Thanks Selur, I cant get SSIQ & ChromaShiftSP to run on avisynth 64bit. Thanks Sharc, can you share the script please, i cant get same result as your output using avisynth.

This is my script so far:

v = Mpeg2Source("G:\future projects\TransferXL-00vbnTwFTX3X8L\SNAKE DEADLY ACT (Eastern Heroes)\demux\VTS_02_1.d2v", Info=3) # get video
a = LWlibavAudioSource("G:\future projects\TransferXL-00vbnTwFTX3X8L\SNAKE DEADLY ACT (Eastern Heroes)\demux\VTS_02_1 T80 2_0ch 192Kbps DELAY 0ms.ac3") # get audio (decompressed to PCM)
AudioDub(v, a)

AssumeTFF()
QTGMC(preset="fast")
SRestore(frate=25)

import("C:\Users\akuma\AviSynth+\plugins64+\spotle ss.avs")

Crop(4,98,-8,-94) # after this cropping you have a 704x364 frame


source = Last
filtered = source.Spotless(ThSAD=400) # Lower ThSAD for detail preservation
Merge(filtered, source, 0.3) # Re-injects 30% of the original grain/detail
DeHalo_alpha(rx=1.5, ry=1.5, darkstr=1.0, brightstr=1.0)

AssumeFPS(24.0, sync_audio=true) #slowdown if really needed

[Selur]

SSIQ -> seems like nobody compiled it for 64bit Avisynth, you will then probably have to look for an alternative
ChromaShiftSP => use ChromaShiftSP2 instead: https://forum.doom9.org/showthread.php?p=1851933#post1851933

[Akuma786]

Thanks Selur

[Sharc]

deleted

[Sharc]

Thanks Sharc, can you share the script please, i cant get same result as your output using avisynth.

As far as I remember something like

v=LWLibavVideoSource("VTS_01_1.VOB")
a=LWLibavAudioSource("VTS_01_1.VOB")
audiodub(v,a)
v.Crop(4, 100, -8, -96)
QTGMC(preset="fast").SRestore(frate=25) #blends removal
Spotless()
#some denoiser here, like SMDegrain() or Temporaldegrain2() or MCDegrainSharp(), I don't remember
assumeFPS(24,sync_audio=true)

then encode with x264 using --sar 10/11 (assuming the player respects the -sar signalling, otherwise resize to square pixels - or whatever you think is right).

[Sharc]

deleted, double post

[abolibibelot]

filtered = source.Spotless(ThSAD=400) # Lower ThSAD for detail preservation
Merge(filtered, source, 0.3) # Re-injects 30% of the original grain/detail

How is this beneficial compared with using less “agressive” noise filtering settings without that “re-injection” step?

v=LWLibavVideoSource("VTS_01_1.VOB")
a=LWLibavAudioSource("VTS_01_1.VOB")

Is there a benefit to using LWLibavVideoSource rather than MPEG2Source with a VOB input?
Perhaps it circumvents the need to first index the file with dgindex?

AssumeFPS(24.0, sync_audio=true) #slowdown if really needed

What does this do with the audio? Is there a pitch correction? Is there a risk of noticeable artifacts when going from 25FPS to 24 FPS?
Since the audio quality seems rather low to begin with (AC3 @ 192kbps), it might be better to keep the audio track unchanged, but perhaps this would cause synchronization issues when going from 29.97FPS to 25FPS.

By the way, small confusion regarding framerates:

Hi I have a DVD which i want to deinterlace and convert the 29.976FPS to the original FPS.

It's 30000 : 1001 = 29.97(003).
And 24FPS is usually rendered as 24000 : 1001 = 23.976(024).

[Sharc]

filtered = source.Spotless(ThSAD=400) # Lower ThSAD for detail preservation
Merge(filtered, source, 0.3) # Re-injects 30% of the original grain/detail

How is this beneficial compared with using less “agressive” noise filtering settings without that “re-injection” step?

Noise, grain, details preservation is much subject to personal preference. Easy to try out.

Is there a benefit to using LWLibavVideoSource rather than MPEG2Source with a VOB input?
Perhaps it circumvents the need to first index the file with dgindex?

LWLibav indexes the file as well and works for many formats. MPEG2Source is for mpeg2 only.

AssumeFPS(24.0, sync_audio=true) #slowdown if really needed

What does this do with the audio? Is there a pitch correction?

Sampling rate gets adjusted and the pitch is affected. Pitch shift good or bad depends how it got processed before when converting from film to video (upshift <-> downshift).

Is there a risk of noticeable artifacts when going from 25FPS to 24 FPS?

Several ways to change the framerate. For AssumeFPS(xx,sync_audio=true): Pitch is affected unless pitch correction is applied which introduces artifacts itself. For video it's just a slowdown. Frames are the same.

Since the audio quality seems rather low to begin with (AC3 @ 192kbps), it might be better to keep the audio track unchanged, but perhaps this would cause synchronization issues when going from 29.97FPS to 25FPS.

Yes, unless the video is telecined/detelecined or motion interpolated which keeps the stream duration intact.

By the way, small confusion regarding framerates:
And 24FPS is usually rendered as 24000 : 1001 = 23.976(024).

Yes, should be 60000/1001 for NTSC fieldrate, means 30000/1001 for NTSC framerate. Film rate of 24fps gets downshifted accordingly to 24000/1001 to make it eventually NTSC broadcast compliant by telecining the film to 60000/1001 fields per second video. Blu-ray accepts 24.000 fps progressive though.