Hybrid poll - sticky thread

[jfcarbel]

Mods - I think it would be a good idea to create a sticky thread for people to identify a list of hybrid DVDs. Not sure if Gknot is the right forum for this post, but you the mods can decide where it best goes.

I have spent a good 3 days searching the forums and have determined that the consensus is that DVD2AVI is only 100% reliable when it indicates a DVD is 100% film, otherwise you need to view sample frames to truly determine what it is. However, as much as I read I do not know what to look for (anyone have a visual on this on a web site?).

Since those who may be better experts at determining this visually have probably done so for many DVDs, why not have a list created that indicates what DVDs are truly hybrids. It also can't hurt in this same thread to have people post what resolution, bitrate, and avisynth and divx settings where used. Contributors should also indicate if its NTSC/PAL and what region.

This could be THE hybrid DVD thread and be invaluable to the doom9 community.

Example Contribution:

X-files, Seasons 1-6, NTSC, R1
resolution: 512x384
Gknot compressability: 60%
bitrate: 1200
filesize: 700MB
Divx settings: Divx 5.02 B-frames

avisynth used:
LoadPlugin("C:\decomb.dll")
Decimate(Mode=1,Threshold=50)
Telecide(...)
Resize(...)

Another idea is since TV series are the ones that are mostly hybrid, then create a sticky thread which lists all the TV shows on DVD then indicate for each if Hybrid or Force Film. Maybe both these threads can exist. One to show all hybrids and one to show when force film can be used on TV shows.

I think these 2 threads would be very helpful to the forum users.

here is a partial list of TV shows on DVD:
X-files
Outer Limits
Stargate SG-1
Farscape
Babylon 5
CSI
ER (coming 6/2003 for R1)
Friends
Six Feet Under
Star Trek - TOS
Star Trek - DS9 (coming 2/25)
Star Trek - TNG
Andromeda
Sopranoes
Sex in the City
Six Feet Under
Doctor Who
Space 1999
Speed Racer

[manono]

Hi-

In your 3 days of searching, did you come across This (http://www.doom9.org/ivtc-tut.htm)? I can't really tell, as you, in one instance, seem to have seen it, but in others seem to have no understanding of what's in it. For example:

...then indicate for each if Hybrid or Force Film

Are you implying that those are the only 2 choices? Because, if so, then it couldn't be further from the truth. That's a nice collection of TV Show DVDs, but not having ripped any of them, I can't comment if you have correctly figured them all as Hybrid. However, some of them are well known examples of Hybrid DVDs, and the forums are full of discussions about how to rip them. In general, it's the space shows that have some 30fps computer generated effects (frequently interlaced) that are the hybrids.

[jfcarbel]

Yes, I have read that document over and over. It is an excellent document written very well. Before this document, I would not even think into diving into this area.

>>...then indicate for each if Hybrid or Force Film
Here I meant just 2 indicate if it needs to be treated as hybrid or if Force Film can be used. I believe there are actually 4 choices, the other is IVTC in an avisynth script, IVTC via TMPEGEnc, or to do a deinterlace. Correct me if I am wrong here.

? - Does decomb mode=1 deinterlace? I don't think so because the whole point is to leave it at 29.97 fps. But I thought I read that Decomb does a deinterlace by default

So maybe I should have said to indicate which method is used for IVTC or was deinterlace used or decomb.dll mode=1

As for the list of TV shows, it is just a list. I do not know of these are hybrid or not. It is just there to get others thinking about all those possible hybrids we have out there and maybe a need for a comprehensive list.

I am going to start this weekend on my TNG season 1 NTSC and Babylon 5. I know TNG is hybrid, but not sure about all the discs in Bab5. Also want to do X-files in the future as well - hybrid?

I also did search on many of my shows in the list and did find some discussions on TNG, X-Files, and Babylon 5. But some were PAL discussions and some did not indicate the season (if there is a difference for each). I would assume that if they did one episode hybrid that the rest of the season is as well. But I could be wrong, anyone care to comment?

Do you think this would make a good thread? If others think so then speak up so we can tell if this is something wanted by others.

[manono]

Hi-

Yes, unless you turn off the deinterlacer, it's working in whatever mode you use with Decomb.

Although GKnot isn't the place to make such a list a Sticky, I don't really see any Forum as a suitable home for one. I don't mind having specific titles such as these hybrids discussed here though since many people have to deal with them from time to time. My feeling is that since we're spending all of this time teaching ourselves to backup our DVDs as a hobby, and since this hobby grows out of a love of films to begin with (in my case anyway), that there should be a Forum to discuss all aspects of the movies and shows themselves. The ones we like and recommend to others, the ones we don't like, the ones we've had problems with, the compressible ones, the difficult to compress ones and how to deal with them, those kinds of things. There have been sporadic attempts to get an Anime Forum, as anime presents problems not found with other kinds of video, but nothing much came of them. So, you see these film specific discussions carried on all over the place.

Since that tutorial was published, AviSynth 2.5 has come out and Decomb for AviSynth 2.5 has another mode to handle Hybrids (a mode not available in the version for AviSynth 2.07, unfortunately). Whereas before, Decomb's Mode=1 added a blended frame to the film portions and kept everything at 29.97fps, there is now a Mode=3, which blends the 29.97fps material and gives you back a 23.976fps video. If I were going to work on some real Hybrid material, I'd teach myself AviSynth 2.5. You can find more information in the YV12 FAQ (http://forum.doom9.org/showthread.php?s=&threadid=37276).

[jfcarbel]

It seems mode=3 is not always as good as mode=1. According to this thread it actually makes things worse in certain scenes.

http://forum.doom9.org/showthread.php?s=&threadid=43362&highlight=mode%3D3

So my question, is which is best for most hybrids. Is it to stick with mode=1 and leave it all at 29.97 fps or use mode=3? Can anyone with experience on both these comment.