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Question about inverse telecine and shimmering
Question about inverse telecine and shimmering
Doug Gorius
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I have an .mpeg of a Monsters HD broadcast of Godzilla 1985, and it looks very good, except the whole thing is interlaced and there is some shimmering.
Can somebody show me how to inverse telecine and de-shimmer this .mpeg without compressing it, or compressing it as little as possible? Thanx.
CompMovieGuy
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Im really into the 80s, it's so choiceIf no one gives you any advice with this, shoot me a PM
Moth3r said: No, there is no video embedding option in this forum software (thank god!)
Chewtobacca
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@Doug Gorius
This is something that I would suggest you take to videohelp.com and post there.
Moth3r
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Better Grumpy than DopeySample would be useful. AviSynth is your friend.
Note it is not possible to IVTC a 29.97 interlaced fps file to 23.967 progressive fps with re-compressing.
Doug Gorius
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Chewtobacca
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Posting a sample of the end credits isn't the best thing to do if you want people to see the problems with your video. This isn't HD: it is is 720x480. Did you resize the clip? If so, you shouldn't resize interlaced video unless you really know what you are doing (and even then I wouldn't recommend it.)
Doug Gorius
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Chewtobacca said:
Posting a sample of the end credits isn't the best thing to do if you want people to see the problems with your video. This isn't HD: it is is 720x480. Did you resize the clip? If so, you shouldn't resize interlaced video unless you really know what you are doing (and even then I wouldn't recommend it.)
I should have said that it was a standard definition capture. The guy I torrented it from can't record in HD, unfortunately.
CompMovieGuy
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Im really into the 80s, it's so choicea SD cap from MonsterHD?
Well, MonstersHD isnt around anymore, at least I dont think, and if its an SD cap, it was probably made from a DVD recorder on the HD channel
If you still want to give my solution a shot and meets your needs let me know, otherwise......going to have to IVTC (if possible) the capture in AVS and re-encode the entire thing
Moth3r said: No, there is no video embedding option in this forum software (thank god!)
Chewtobacca
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The shimmering you mentioned might well be in the source. I don't know if you can do anything about that. (As I said, videohelp.com might be the best place to ask about that.)
To inverse telecine, you will need the latest version of Avisynth, DGIndex, PGCDemux and I would recommend you try the TIVTC plugin first, which you should place in the plugins directory inside Avisynth. These are all free.
This is probably the easiest procedure to follow, if you haven't inverse telecined a video before.
- Demux your video with PGCdemux.
- Load the video file into DGIndex; check this option: Video --> Field Operation --> Honor Pulldown Flags, and save as d2v.
- Write an Avisynth script that looks like this:
Loadplugin("Your_Directory_Structure\DGDecode.dll")
Mpeg2Source("Your_Directory_Structure\Your_Video.d2v")
TFM(d2v="Your_Directory_Structure\Your_Video.d2v")
TDecimate()
You can skip loading the plugin if you put DGDecode.dll in your Avisynth plugins directory. Then open your script in HC Enc (0.25 is now out) and encode with pulldown flags.
You can experiment with the various options for TIVTC if you need to, but the default setting usually does a good job.
http://avisynth.org/mediawiki/TIVTC.
Doug Gorius
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Ok, I loaded my script in Hc Enc, and I saw this message:
"error loading Avisynth script,LoadPlugin: unable to load "Your_Directory_Structure\DGDecode.dll" (\\.psf\Home\Desktop\VideoFile.avs, line 1)
I don't know what I did wrong. Could somebody help me? I'm a complete and utter newb when it comes to stuff like Avisynth. Also, I have no idea what to put in the script for "Your_Directory_Structure".
Chewtobacca
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Your directory structure, as the name implies, is where the file is located on your computer. Mine would be:
Loadplugin("C:\My Utilities\dgmpgdec157\DGDecode.dll")
Find where you installed DGIndex.
Moth3r
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Better Grumpy than DopeyI tried a manual IVTC (simple 3:2 pulldown removal) on the sample, and although it seemed to reconstruct the original frames successfully and eliminate the combing, there were dupe frames appearing every so often. It's possible that there is a more complex pulldown pattern going on here.
Doug Gorius
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Moth3r said:
I tried a manual IVTC (simple 3:2 pulldown removal) on the sample, and although it seemed to reconstruct the original frames successfully and eliminate the combing, there were dupe frames appearing every so often. It's possible that there is a more complex pulldown pattern going on here.
That's odd, when I IVTC'd it through the process Chewtobacca suggested I didn't see any dupe frames.
Moth3r
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Better Grumpy than DopeyI tried it with TIVTC and got exactly the same. Look at frames 66 and 67 for example.
Chewtobacca
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Moth3r's right. There are duplicate frames -- many of them. Some of them are close together: 20 and 21, and 24 and 25, for example. The duplicate seems somehow heavier (blurrier?) than its predecessor, which might explain the shimmering that you see.
The method I posted was just the one I usually try as a first attempt. I have been trying to see if there is a pattern, but so far I cannot work it out. Really, HDTV broadcasts can be a pain, which is why I suggested videohelp: the guys there are far better at working these things out than I am.
Question about inverse telecine and shimmering