So all pro's for QTGMC.
I believe what forums say and using it instead of Yadif.
But what are downsides of QTGMC in short?
Thanks.
Try StreamFab Downloader and download from Netflix, Amazon, Youtube! Or Try DVDFab and copy Blu-rays!
+ Reply to Thread
Results 1 to 12 of 12
Thread
-
Last edited by taigi; 2nd Jun 2021 at 02:29.
-
QTGMC is not a deinterlacer, it's a script, that actually uses Yadif for deinterlacing when you choose the ultrafast or superfast presets.
-
It depends on how you are using it, and what your goals are
One drawback is it tends to denoise or smooth over fine details . It's the reason for it's precursor's existence - calming bob flicker, reducing aliasing . Sometimes that's considered a "pro", sometimes a "con" in some situations
Other than slow, it requires many prerequisite functions and plugins -
It looks like I noticed extensive smoothing.
What could be the way to lose less of fine details? -
Read the detailed instructions, especially the source match, noise bypass, GrainRestore, NoiseRestore sections .
In general, higher temporal radius (TR0,TR1,TR2) settings, means more smoothing thus more loss of detail
There is a lossless mode which retains the original fields, but then you get more flicker, shimmer, combing and less smoothing.
There are many settings you can adjust, all of them are tradeoffs. Preview your results (e.g avspmod), and tweak them. -
Downsides?
1. Using it when it's not called for (double-rate deinterlacing when an IVTC is called for, for example).
2. Slow (I usually use a much faster and nearly as good bobber).
3. Using it mostly for its cleaning properties (I prefer using dedicated filters for cleaning). -
+1, especially #1. Too many people read about QTGMC and think it is some sort of magic plugin. Although it has nice features, it is not magic. In addition, unless deinterlacing is required for subsequent operations, you should just leave the video interlaced and let your TV set handle it. Modern TVs do a fine job of deinterlacing, possibly even better than QTGMC, and certainly no worse.
-
User error, mostly. Lots of options.
I've come across situations where any QTGMC setting would cause weird motion issues.
See this: https://forum.videohelp.com/threads/398713-QTGMC-image-vibration-motionWant my help? Ask here! (not via PM!)
FAQs: Best Blank Discs • Best TBCs • Best VCRs for capture • Restore VHS -
-
We are in agreement, I think. Those people who own low-end sets are not the people who are going to be wanting to use QTGMC because, being part of the "unwashed masses," they don't know interlacing artifacts from a hole in the wall.
By contrast, people like me, and you, and most of the members of this forum who all care about this stuff, own decent TV sets that have excellent deinterlacing built in which, as you point out, do much the same thing as QTGMC, In fact, they probably do it better because they have direct access to the pixels on the screen.
Similar Threads
-
Qtgmc-GUI. A simple encoder for your Qtgmc scripts.
By ProWo in forum Video ConversionReplies: 17Last Post: 4th Mar 2023, 03:01 -
Help with QTGMC
By Xyena in forum Newbie / General discussionsReplies: 6Last Post: 22nd Sep 2020, 13:25 -
I think this just needs QTGMC...
By pooksahib in forum Video ConversionReplies: 2Last Post: 30th May 2019, 04:12 -
Help with QTGMC?
By attackworld in forum EditingReplies: 3Last Post: 26th Nov 2018, 22:57 -
Frustrated with QTGMC
By guayabito in forum Newbie / General discussionsReplies: 19Last Post: 8th Oct 2018, 05:15