View Full Version : General Questions


mus30
6th January 2002, 12:08
Hey Fellas
Just wanted to ask a few general questions, in no specific order.
1 - What filters do people use (besdies resize and cropping), with every rip that they do or are these two the only mandatory ones and the rest depend on the film?

2 - What video data rates do people usually end up with on their rips (2CD movies specifically)?

3 - Is there any way to correct frames which have artefacts (i think is the word) in it? Basically, I encoded Top Gun and have a one scene throughout the entire movie where it gets real blocks and only corrects itself fully when the camera angle changes.

Any help would be appreciated.
Cheers fellas and keep up the great work

jeremymacmull
6th January 2002, 14:06
Hey there ill try to reply to those questions

I use for most things especially on 2CD rips the internal Resise filter and cropping from there not null transform afterwards. IE crop and resize within the same filter. I normally set it to 640x XXX look up the XXX depending on the aspect ratio of the DVD this is normally 272 or 352 but....

This is for progressive pal or NTSC movies.

If the Movie is interlaced i follow the deinterlacing procedure as described in the guides then convert the tpr file made by TMPG enc to avi by VFAPI then load this into NANDUB i then apply the internal deinterlace filter to my filter settings on blend mode. then resize and crop (IMP resize and crop after deinterlacing!!!)

if its anime and ive already applied the filters ive described above i also add either 2d cleaner or Smart smoother (Look at the nandub advanced users threads: Problems encoding rocky 4 near the bottom and the settings are explained)

As well as Warp sharp or X sharpen (again look at the Rocky 4 thread for settings )

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Next question for video rate i find if i am to do a 2 CD rip it must be a movie which is longer than 110 mins. otherwise it is not needed (unless u really want to) but most of the time i end up with data rates between 750-1300 anything in this range should come out fine.

but again it depends on the movie.

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LAST question it seems that TOP gun was copied or download incorrectly and some one repaired it but that might not be the case unfortunately im unable to help u there. but im sure others can!! :)

JEREMY MACMULL

diji1
6th January 2002, 14:15
Hi,

1) I would say that it depends on the film ( except in the case of anime - imo filters defintly improve all anime i have encoded (( which is only 5 btw )) ). I personally like to change the source video as little as possible, but some movies are very "noisy" and do benefit from having some sort of noise filter applied to them ( eg. U-turn, pal ). Encoding a small section of the movie with and w/o filters to compare is a good thing to do imo. Some ppl use use noise filters and others on credits to shrink them to the smallest possible size.

2) Say around 1750 - of course it varys greatly betwwen dvds - like Femme 2 ( crap sc pr0n ) 1240, or crouching tiger hidden dragon 3000.... there really is no set bitrate/res if you want to fully use all the space available.

3) Use nandub ( now available in gknot as well ) anti-shit - ive only had to use this feature once - tho plenty of ppl seem to use it as a normal part of their encoding process -
it worked for me.

mus30
6th January 2002, 15:51
Thanks for the quick replies fellas. Much appreciated.
Would like to hear others opinions as well.
The more the merrier :)
Just another question - what kind of video data rates do u have when u 'right click' the final file, check properties, and check video data rate.
Just curious
Thanks again

DigDub
6th January 2002, 17:15
I usually used the resize and cropping filter. Have tried using temporal smoother but finds that the movie turns out to be really 'soft'.

As for the bitrate, I usually rely on the bitrate calculator. Then I have a quick look at the movie and decide what bitrate to use. Go with my gut feelings.

Captain_Nipple
6th January 2002, 23:52
I think anything above 90kbps is ok. But saying that does not mean the actual avi will look good.

Captain.

LotionBoy
8th January 2002, 00:19
to answer these questions.

1. In the past I haven't used a lot of filtering on my movies, but I have started recently. What got me started was Chasing Amy, which is the worst DVD sources I have ever encoded. I had to do one encode with massive amounts of filtering and then a second encode of one specific part of the movie with even more filtering to just get it look decent. After that, I've been experimenting with filtering a little bit more and I've really come to like it. I use a spatial smoother on pretty much every more I encode now. Just a very weak on, but I find it drastically improves compression, while removing details that you are only going to notice when you are two feet from your computer screen. When sitting far away, or watching on a TV, there is no apparent difference. I will also throw a temporal smoother on if I think that there is noise on the source. So the temporal smoother kills the noise and the smart smoother kills tiny details to increase compression.

2. 2 CD rips. The average bitrate of the rips I have is 170.28Kbs, which is 1362.24kbs

3. Nandub and ANti-shit. check the Nandub guide.

When you right click on a file and do Summary in windows 2000, the bitrate is in Kb/s, in Nandub we use kb/s (Kilobytes vs kilobits). Multiply Kb/s by 8 to convert to kb/s. I usually use a bitrate over 750 (unless the movie is really compressible), so that setting is usually over 93.75

LotionBoy