Xvid question for RUI

[kastro68]

Ogenki desu ka,

I would just like to know the average resolutions that most of your movies tend to be encoded. Just a ballpark figure would be nice.

What resolution are 1 cd encodes usually done at? For both 1.5hr and 2hr movies.

What resolution are 2 cd encodes usually done at? For both 2hr or 3hr movies.

And the audio bitrate you use.

I used the compressibility test that came with gnot and my recent movie was only 1hr 37 minutes but gknot says the ideal resolution i should be using was 464x208...which is really low for me. I freak out when i have to choose a resolution that goes below around 600. I am just asking you to see if low resolutions occur frequently of if this movie is just hard to compress.

I have done the movie at a higher resolution (ignoring gknot's recommendations)of around 644xsomething but it looked awful when i used Xvid to encode it to one cd. I have yet to encode the same movie at the same resolution with divx4.12 to illiminate the possible causes. I am not sure if my current build of xvid is buggy(Koepi's 17/2/2002) or whether or not i should lower the resolution. The movie is "Conmen in Las Vegas", which is in NTSC format.

I have previously ignored gknot's resolution recommendations and still got very good encodes...I only seem to experience these quality problems with NTSC dvds.

Arigato Gozaimasu

[rui]

Thanks for the vote of confidence :)

But i would be glad to read other people opinions too. I still have a lot to learn in this XviD/encoding thing ;)


Originally posted by kastro68
Ogenki desu ka,

I would just like to know the average resolutions that most of your movies tend to be encoded. Just a ballpark figure would be nice.


I always do a divx4 comp check to decide on the resolution. I never go lower than 512. If the comp check tells me that with 512 i still don't reach the 40%, then i go for 2 cd's. But if want the most quality i wouldn't even go lower than 608 or something. ;)

Originally posted by kastro68

What resolution are 1 cd encodes usually done at? For both 1.5hr and 2hr movies.

What resolution are 2 cd encodes usually done at? For both 2hr or 3hr movies.


1 cd: 1H30m -> usually 576xXXX
2H00m -> usually 544xXXX or 576. In extreme cases i use 512, but only if i am ready to give up on some (a lot?) quality of the movie.

2 cd's: 2H00m -> usually 608xXXX or bigger
3H00m (like The Green Mile, i did it the other day using XviD) i use 576xXXX or 608xXXX, depending on the comp check.

Originally posted by kastro68

And the audio bitrate you use.


Always do ABR 128 for 1 cd and ABR 160 for 2 cd's.

Originally posted by kastro68

I used the compressibility test that came with gnot and my recent movie was only 1hr 37 minutes but gknot says the ideal resolution i should be using was 464x208...which is really low for me. I freak out when i have to choose a resolution that goes below around 600. I am just asking you to see if low resolutions occur frequently of if this movie is just hard to compress.


Could be the movie. Recently i tried to rip "The Replacements" for 1 cd and Gnot, at 512xXXX gave me a 29% ;)

Originally posted by kastro68

I have done the movie at a higher resolution (ignoring gknot's recommendations)of around 644xsomething but it looked awful when i used Xvid to encode it to one cd. I have yet to encode the same movie at the same resolution with divx4.12 to illiminate the possible causes. I am not sure if my current build of xvid is buggy(Koepi's 17/2/2002) or whether or not i should lower the resolution. The movie is "Conmen in Las Vegas", which is in NTSC format.

I have previously ignored gknot's resolution recommendations and still got very good encodes...I only seem to experience these quality problems with NTSC dvds.
Arigato Gozaimasu

Divx 4.12, at very low bitrates could look a little bit better because of the "blur" nature of the codec. So you will not notice so much the blocks. But my advice to you is to go for 2 cd's a get that resolution up a bit. And stick with XviD ;)

[kastro68]

Thanks for the quick reply:)

It is comforting to know that resolutions around the 500 mark are quite common, though i still feel uneasy with such a low resolution.

I have just finished my 7th 2 pass encode of that same movie...and i am still not satisfied with the quality, with high resolutions it is a bit too blocky and with low resolutions it just blends too much. [The first 2 passes came out buggy because i used a resolution that was not a multiple of 16]

I think i'll just have to put it on 2 cds, it just feels awkward though because the movie is only 1hr 37minutes.

But before that i still have to do another 2 passes with 4.12, which should help me get to the root of the problem.

Thanks again

[Teegedeck]

Not satisfied with the quality of your 1-CD-encodings? Welcome to the club...

Now, you can try to work with filters and tricks to make the movie more compressible and have some real fun!

For example you can try to use temporal smoother, and even better, hide it between two bilinear resizers to get rid of even more noise. And a levels filter to get more very dark and very bright areas that lumi-masking can feed on. Now that's fun!

And then you'll realize that you only pushed the compressiblity by about 5%, while the movie looks really unnatural by now, and start thinking that it might consume less time to just spill out another buck for a 2-CD-encoding... :p

[yokem55]

Is it masochistic to try to go through all of these hoops just to get the vaunted "perfect quality, full resolution, 2 hr" movie onto one cd? I myself can't wait for the neato 2gb ML-CDR's to come out...except then I will have the dillema, do I really want to use a 2 dollar disk for a two hour movie that just might be able to fit onto a 60 cent 870meg cd-r......aghhh.....part of me just wants to just buy a pair of really big hard drives and just do easy single pass quality based rips, and just play them back off of the hard drive.....a pair of 5400 rpm 80 gig disks would only be about ~$215 shipped....

[kastro68]

Yokem,

Would this be in USD or AUD?


Well i just looked at the divx4.12 encode and it does appear less blocky than the xvid encode...which is to be expected since 4.12 blends alot.

The xvid encode still looks pretty good when i use the divx4 post processing and push the bar all the way up.

[yokem55]

U.S. Dollars....my apologies...I should have been more clear....