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9th June 2019, 17:12 | #1 | Link |
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Video Darkened By QTGMC
I have never had such a problem when editing non-anime video but, with this DVD cartoon series, whenever I apply QTGMC, the video turns out very dark. I rip with MakeMKV, demux and then apply QTGMC(InputType=1) when encoding to x264 using MeGUI.
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9th June 2019, 18:31 | #2 | Link |
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What do you mean very dark ? eitherway - unlikely to be QTGMC
playback settings problem ? Gpu driver ? full/limited range ? encoding settings problem ? source filter problem ? Did you preview the script before encoding ? in MPCHC or Vdub2 ? If you don't apply QTGMC (comment it out) is it still "very dark"? If not, it's not QTGMC, it's something else |
9th June 2019, 19:28 | #3 | Link | ||
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Quote:
You can see the difference between the source and the darkened file here: Source: http://www.mediafire.com/file/6gy41q...ource.m2v/file Darkened by QTGMC: http://www.mediafire.com/file/0ioccj...QTGMC.mkv/file Quote:
I don’t think so. I've used the same x264 settings on all other video with no problem. I’ve also tried other filters, such as TFM() and smdegrain() and the video turns out normally (same as source). If you mean: “is QTGMC working correctly?” then no, because I can run other video through with QTGMC and it works fine. I hadn’t tried that, but just did so with AvsPmod. It does not have the darkened image when viewed this way. When QTGMC is not used, then the video is not darkened, as mentioned in reference to TFM() and smdegrain() use. I think you meant the reverse of “If not, it's not QTGMC, it's something else” …right? Last edited by Danette; 9th June 2019 at 19:31. |
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9th June 2019, 19:47 | #5 | Link | |
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Quote:
The script used for just QTGMC (to try to get at the darkening issue) is QTGMC(). The intended final script is: TFM(slow=2) QTGMC(InputType=1) |
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9th June 2019, 19:59 | #7 | Link |
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Check also if you're using the latest version https://pastebin.com/raw/JLGwn7mE
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9th June 2019, 21:23 | #9 | Link | ||
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Quote:
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I thought about that, but have no way to test it without removing the darkening effect. Catch 22. |
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9th June 2019, 22:15 | #13 | Link | |
Cary Knoop
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Quote:
It's a very simple source, have you tried blurring everything but the edges? |
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9th June 2019, 23:19 | #14 | Link | |||
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I'm curious: have any posters tried running the "Sample 5 - Source.m2v" file through their own QTGMC encoder to see if they get the same darkened result? |
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9th June 2019, 23:38 | #15 | Link |
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Newest smdegrain v3.1.2.102s https://github.com/avisynth-repository/SMDegrain
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9th June 2019, 23:59 | #16 | Link |
Cary Knoop
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I truly don't get why you need QTGMC after you perform a IVTC, just use a good denoiser.
For instance here is the clip after an IVTC and some denoising: https://www.dropbox.com/s/y0h6lv9cpv...tones.mov?dl=0 |
10th June 2019, 01:00 | #17 | Link | |
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Quote:
Nothing wrong with that. I just tried it on his clip and the noise stabilization works quite nicely.
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Groucho's Avisynth Stuff Last edited by Groucho2004; 10th June 2019 at 01:06. |
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10th June 2019, 01:16 | #18 | Link |
Cary Knoop
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Well, here is the comparison with QTGMC, it's less effective.
https://www.dropbox.com/s/4th1far87p...ones2.mov?dl=0 And he may explain it but that does not mean I agree with it. I think QTGMC is quite good at deinterlacing but it does not solve everything but the kitchen sink. Last edited by Cary Knoop; 10th June 2019 at 01:18. |
10th June 2019, 01:22 | #19 | Link | |
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***SOLVED***
Quote:
Unfortunately, both our suspicions were right: the darkened file was much smaller because of the darkening. So, I'm back to a file that, after an x264 encode at crf 18, the file is about equal in size to the source. In the interest of trying this to see if it has any effect upon the size, what denoiser do you suggest, along with your suggested settings? Thanks to all who participated in this challenge. |
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10th June 2019, 01:33 | #20 | Link |
Cary Knoop
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Location: Newark CA, USA
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If it is size what you are worried about denoise it to the max and use hevc. Here is a sample using CRF=18 at 3.47MB:
https://www.dropbox.com/s/nkwdzkybeu...ones.hevc?dl=0 I would use BM3D in combination with KNLMeans. The other things you might want to do is: - stabilize the frames - get rid of the mosquito noise. |
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