Conversion to MP4 Issue - Hybrid

[CharlieTWilburyJr]

Hi all,

I've been experimenting and making constant adjustments made to my VirtualDub2 & Hybrid workflows for a batch of .avi captures I'm deinterlacing in VDub via AviSynth+ and converting to .mp4 in Hybrid. For this batch, I'm trying to upscale to HD best I can while retaining that 640x480 natural 'look', for Premiere Pro editing. I made a wrong adjustment somewhere in Hybrid that has led to my MP4 output files to all have constant green light flickering (strobe-like) which fills the entire frame (see attached). If anyone could review my info below and the attached Hybrid settings, and let me know what they may see as a problem(s), I'd really appreciate it.

My first test from VirtualDub2 through Hybrid worked well, but ever since I made an adjustment, I cannot figure out what I've done (or selected) wrong...

The raw .avi files were captured in 720x480. My AviSynth+ script ends with (entire script below):
Crop(8, 0, -8, 0) #704x480 (PAR .9)
Spline36Resize(1280, 960) #Corrected to 4:3 (PAR 1:1) 'sq pix'

Then in Hybrid under Crop/Resize tab, I check 'Resize' with a target resolution of 920x1080. I then check 'Letterbox' and add 320 padding to both left and right, and 60 to both top and bottom. I am only trying this time of Resizing on this particular batch of captures.



My AviSynth+ script:

AVISource("D:\source")
ConvertToYV12(interlaced=true, matrix="Rec601")
AssumeTFF()
QTGMC(preset="fast", EZKeepGrain=0.5, MatchEnhance=0.8, sharpness=0.6)
FFT3DFilter(sigma=1.5, bt=3, sharpen=0.4)
DeHalo_alpha(rx=2.0, ry=2.0, darkstr=0.8, brightstr=1.0)
MCTemporalDenoise(settings="medium", chroma=true, enhance=true)
LSFMod(strength=50, Smode=3, Smethod=2) #with & without
Tweak(hue=0, sat=1.1, bright=5, cont=1.05)
Crop(8, 0, -8, 0) # 704x480 (PAR .9)
Spline36Resize(1280, 960) # Corrected 4:3 (PAR 1:1) for sq pix



I'd really appreciate any and all thoughts especially on getting the conversions back on track....thank you!

[Selur]

wild guess: some color space issue due when deinterlacing rgb input with FFmpeg Yadif. (would need a source clip and a debug output to know for sure what is happening)
Crop&Resize tab settings in Hybrid simply looks wrong. (unless the output should really be 2560x1200, then they are just not as intended by the author, but might make some sense)

[CharlieTWilburyJr]

wild guess: some color space issue due when deinterlacing rgb input with FFmpeg Yadif. (would need a source clip and a debug output to know for sure what is happening)
Crop&Resize tab settings in Hybrid simply looks wrong. (unless the output should really be 2560x1200, then they are just not as intended by the author, but might make some sense)

Thank you so much for the quick reply. Based on my settings in the deinterlacing tab, can you confirm that I do not have any interlace function turned on? I say this seeing that you mentioned Yadif. Hybrid is incorrectly viewing the input footage as interlaced despite having already used QTGMC in virtual dub, so I chose Override: top field first and 'Xsynth' in the upper right hand corner hoping that ensured no re-deinterlace (even though Hybrid wouldn't deinterlace material it already sees as deinterlaced but again it's claiming the avi is interlaced when it is not. Just hope I've turned off deinterlacing correctly.
I think I've crunched the Resize numbers accurately from script to hybrid resize and letterbox, just am trying upscale methods for a Premiere Pro project but the green flickering is not going away.

[Selur]

Just hope I've turned off deinterlacing correctly.

You have not.
If your source is flagged as bff or fff when it should be progressive, you need to overwrite it to progressive, not tff.