Oh, I wasn't aware of that. You only need to run QTGMC once though right? Not once in 90" then again normally?Normally QTGMC() cleans up artifacts created on near-horizontal lines/edges. Sometimes you have vertical lines/edges that need cleaning. Hence the 90 degree rotation.
Thank you for pin-pointing me jagabo. I will do some reading on them once I'm able to use QTGMC and de-interlace a video.He's talking about various temporal noise reducers like RemoveDirt(), TTempSmooth(), RemoveSpotsMC(), etc.
EDIT: Oh, just saw restore-chappy reply as well (had the window open and not refreshed for a while I guess).
That answer my previous question. You did run QTGMC twice. Is that a common workflow when working with QTGMC? Deinterlace is once, rotate it, and run QTGMC on progressive mode just to also clean vertical noise?The process i did on Okiba's file was to deinterlace first to 25ps with QTGMC then rotate 90° then QTGMC progressive mode, then rotate -90°
That would be great. Just to give me a proper workflow to experiment withI would think all these processes could be easily wrapped up neatly in a AVisynth script but i don't possess the skills....NudgeNudge Jagabo !
By the way, I asked me father to find that DVD record. Sadly - it's not a DVD recorder It's another VCR - or the SAME type I currently using! (He told me my uncle also got the same VCR). The VCR Do have DV/AV IN, but I'm assuming it's not worth trying it because as mentioned above by you guys - the VCR/DVD Combo I'm using already modifying the original output. So that won't work anyhow.
Thanks again guys!
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Last edited by Okiba; 21st Sep 2020 at 10:38.
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Is it the exact same model, or is it a Pioneer DVD-recorder combo? I know they made combos with the same chips as the standalone DVRs that do have some lineTBC/horizontal correction and may work similarly, but they also made ones with different chips. Also, only some dvd-recorder/VCR combos pass the video output through the internal digitizer (like the LGs), many don't, and some give the raw signal on composite but processed on others (Panasonics I think). Combos that have no dvd-recording function will of course only have normal composite out like a standalone VCR as they have no digitizer in the first place.
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Is that a common workflow when working with QTGMC? Deinterlace is once, rotate it, and run QTGMC on progressive mode just to also clean vertical noise?
If you plan to share the file with family and maybe upload to a streaming site then it makes sense to make it progressive.
But always keep the huffys interlaced originals in case the inchip deinterlacers in TVs compare with QTGMC or better. -
Here's an old thread with comparisons of a lot of AviSynth noise reduction filters:
https://forum.videohelp.com/threads/358043-A-comparison-of-AVIsynth-denoise-filters
Be careful with strong temporal NR filters -- they can create a lot of motion artifacts with panning shots. And spacial NR filters can remove detail as well as noise. -
QTGMC is a complex pre-made Avisynth script (.avsi) with about 1,000 lines of code. The actual deinterlacers are all EDI (edge dependent interpolation) based (Yadif, NNEDIs, etc). It's a complex usage of deinterlace, anti-alias (AA), and noise reduction (NR).
QTGMC is really a program unto itself, residing within Avisynth.Want my help? Ask here! (not via PM!)
FAQs: Best Blank Discs • Best TBCs • Best VCRs for capture • Restore VHS -
Is it the exact same model, or is it a Pioneer DVD-recorder combo?
I know they made combos with the same chips as the standalone DVRs that do have some lineTBC/horizontal correction and may work similarly, but they also made ones with different chips.
Also, only some dvd-recorder/VCR combos pass the video output through the internal digitizer (like the LGs), many don't,
No its not really common practise, But in this instance i felt deinterlacing first then rotating then QTGMC progressive mode gave better results.
Here's an old thread with comparisons of a lot of AviSynth noise reduction filters:
It's a complex usage of deinterlace, anti-alias (AA), and noise reduction (NR).
Thanks. I had a spare hour yesterday night, so I setup AviSynth and QTGMC. I will try to take a decent video, run QTGMC against it - and see the quality difference. -
I managed to make QTGMC work and wow, there's a big difference in quality. You can see there's much more then just de-interlacing happening in the background. I have couple of questions regarding QTGMC and AviSynth, but I think this goes way beyond the original topic, I opened a dedicated on in the proper forum if anyone interested in a follow up.
Thanks everyone! this has been a HUGE help.
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