Picking and understanding Resolutions

[kkiller23]

Okay, so i've been ripping dvds for a while using gordian knot, but i've never fully understanded how to pick the best res as of right now.
I just try to get the ar error closet to 0.0 or w/e, but sometimes the people look weirdish.
Today i did my first mkv (720p) to a 2cd rip and the people looked a little fatish and the video looked a little side ways as if it wasn't level.

The input res was 1280x720 and the out put of my 2cdx700mb xvid file was 672x304

So what i'm pretty much asking is how do you find the right res and is the res correct on that rip i did today?

[manono]

Since the input AR was 1.78:1 and your output was 2.21:1, it stands to reason that they looked a little fatish.

Just pick a resolution with an aspect ratio similar to that of the source. In this case it might be 624x352, 704x400, or similar.

[kkiller23]

Since the input AR was 1.78:1 and your output was 2.21:1, it stands to reason that they looked a little fatish.

Just pick a resolution with an aspect ratio similar to that of the source. In this case it might be 624x352, 704x400, or similar.

The source was 16:9 though i cant even get a ar below 2 with out making it 4:3?

[manono]

That doesn't make any sense. Your input AR isn't 16:9 anyway, but 1:1. Are you using GKnot to help with the resolutions? If so, then your input is 1280x720 and 1:1. Get your output resolutions from that.

[kkiller23]

That doesn't make any sense. Your input AR isn't 16:9 anyway, but 1:1. Are you using GKnot to help with the resolutions? If so, then your input is 1280x720 and 1:1. Get your output resolutions from that.

Yeah, i really do know nothing about ARs and RES

can you explain how to get the ar and how to find the best res to me like im a 14yr old? haha

when i use a AR calculator it tells me this for the mkv file

Aspect ratio: 1.78:1 (16:9)
How did you get 1:1?
I just tried doing another xvid copy again, but under "input AR i put 4:3 and used the res 640x384 and the ar looked pretty close
Aspect ratio: 1.67:1
but not that you said its 1:1 i can see that the ar gets pretty close to 1.78:1 that way aswell so.... im lost.

[manono]

I just tried doing another xvid copy again, but under "input AR i put 4:3 and used the res 640x384 and the ar looked pretty close

Close, but no cigar.

You're not using GKnot? You said in your first post you had been using it previously. Whatever AR calc you're using, can't you plug in 1:1? If not it might be better for you to go back to using GKnot for this. If you wish to use other resolutions, you may have to do some additional cropping of height or width to keep the aspect error down:

[kkiller23]

Okay, i think i got this one.

I have same ar and res as you and same ar error i had the
"w-modul" at 32 before not 16
does it stay at 16/16 for everything?

One thing i don't understand how do you know wheather its 1:1, 16:9, 4:9 etc?

[manono]

How do you come up with these resolutions? 608/368=1.65:1. Your source is 1.78:1. You're using 4:3 again.

Look, unlike DVDs which are always 4:3 or 16:9, these MKVs from blu-ray sources are often 1:1. 1280x720, or 1920x1080. And even if there are black bars that have been cropped away to make them, for example, 1280x544 (2.35:1), they're still 1:1. The Input PAR for the likes of GKnot is 1:1. They don't get resized the way a DVD does, but only scaled.

If i change the res anymore the AR goes to 0.8,

You can use any (Mod16) width you like. You might have to do a small bit of cropping to keep the AR Error down, though.

[kkiller23]

How do you come up with these resolutions? 608/368=1.65:1. Your source is 1.78:1. You're using 4:3 again.

Look, unlike DVDs which are always 4:3 or 16:9, these MKVs from blu-ray sources are often 1:1. 1280x720, or 1920x1080. And even if there are black bars that have been cropped away to make them, for example, 1280x544 (2.35:1), they're still 1:1. The Input PAR for the likes of GKnot is 1:1. They don't get resized the way a DVD does, but only scaled.

If i change the res anymore the AR goes to 0.8,

You can use any (Mod16) width you like. You might have to do a small bit of cropping to keep the AR Error down, though.

Yeah, i have mod16 at 32 before and it was giving me the weird resolutions. I pretty much just guessed the resolutions before, but i want to take the time and try and understand what i have to do now so let me get this straight.

A dvd can only be 4:3 or 16:9 and these mkv files and should be set to 1:1?

when i go back to ripping dvds should i change mod16 back to 32/16? or keep it at 16/16 for everything?

Is there a tut somewhere that explains all this mod16 and AR's to me so i can read up on it? just so i can better understand it, i finally got this xvid correct, you see how much time it took.

[manono]

I know that the GKnot default is 32/16, but I changed the W-Modul to 16 because it opens up more resolutions to use. For Xvids that's fine. So, even after you go back to doing DVDs, 16/16 is okay. To tell you the truth, I'm not nearly as familiar with MKVs as I am with DVDs. I don't download that stuff. But the ones with which I'm familiar have all been 1:1, the ones made from blu-ray movies. Others with more knowledge and experience with them can confirm or disagree.

It's kind of hard to go wrong when using GKnot, as long as you get the Input PAR correct. For DVDs, just pay attention to whether it's 4:3 or 16:9 when making the D2V project file. Then when opening the D2V in GKnot the correct PAR should be ticked automatically. Is there a tutorial? None that I know of. Maybe someone else can provide a link to better explain things to you. Good luck.

[kkiller23]

I know that the GKnot default is 32/16, but I changed the W-Modul to 16 because it opens up more resolutions to use. For Xvids that's fine. So, even after you go back to doing DVDs, 16/16 is okay. To tell you the truth, I'm not nearly as familiar with MKVs as I am with DVDs. I don't download that stuff. But the ones with which I'm familiar have all been 1:1, the ones made from blu-ray movies. Others with more knowledge and experience with them can confirm or disagree.

It's kind of hard to go wrong when using GKnot, as long as you get the Input PAR correct. For DVDs, just pay attention to whether it's 4:3 or 16:9 when making the D2V project file. Then when opening the D2V in GKnot the correct PAR should be ticked automatically. Is there a tutorial? None that I know of. Maybe someone else can provide a link to better explain things to you. Good luck.

Okay, well thanks for helping me out and putting in the effort to reply to me all them times.
You really helped me out and helped me understand a lot of it better.
If there was a thank you button or something i'd press it for you. haha

=)