Jaggies in Adobe After Effects 6.0?

[MGRip]

(Sorry about my English)
Hi,

I've just started to work in After Effects, and wow! big problem!
I did some titles on it, in the best mode they look ultra sharp, but when I exported it became jaggied and some green artifacts appeared around this (red) text, in addition it become blured. I converted it to Xvid (with GK), but the same thing happend...

Step by step about what I've done in After FX 6.0:
1) New text Layer.
2) I added movement with the poision effect.
3) Composition -> make movie... -> I changed losless to Microsoft PAL DV 48Khz (I live in europe)-> render
4) I saw what I described before and tried to compress it with Xvid, same result.
5) (I've installed about a month ago Panasonic DV CODEC - I don't know anything about DV codecs, so maybe my mistake is here.)

Any suggestions?


Thank you in advance,
Mark.

[niann]

Sometimes it help to apply a gaussian blur filter to the title clip, with a blur setting of 0.0. This should not change the video in any way, but it forces AE to render every frame because it thinks there is an effect that needs to be applied. I would give this a shot see what happens.

Cheers!
-Niann

[MGRip]

Thanks for the quick reply.
I tried to blur (0.0), but the problem stays (it helped a little).
It looks like the text was made on 320*240 resolution and then squeezed to 720*576. BTW my target video is 16:9 (anamorphic) - 1.42 if I'm not wrong. Maybe this information will help:
I made black background and wrote on it with 48 font - blue (I decided to change it from red). Then I went to the transform -> position -> checked the stop watch and added key frames.

Have I done something wrong? Any suggestions?

Thank you in advance (and I'm very sorry about my English),
Mark.

P.S. I checked the best quality and exported as best setting with Microsoft DV PAL 48Khz.

[MGRip]

BTW, I think I know the problem but I don't know how to solve it:
If I export as lossless, it looks great! The problem is the Microsoft Pal DV 48KHz template. What to do? Is there any frame serving software for this? (The size of 30 sec lossles movie will be huge)

Thnak you in advance again,
Mark.

[MGRip]

Video sample
http://magin.butbul.net/jaggietextcheck.avi

[scharfis_brain]

this is typical for PAL-DV and MPEG-2 MP@ML video

use bigger, anti-alisaed and less saturated fonts.

it is one of the big downsides of interlaced YV12 colorspace.

[MGRip]

Thank you,
Where is the function of anti-alisaed fonts in AE?
Isn't it RGB (in the output settings is written that I'm exporting RGB)? If not so how to export as RGB?

Thank you in advance,
Mark.

[scharfis_brain]

I don't have any knowledge about AE. it was just a general hint to use anti-alisaed fonts.

also, exporting as RGB will only help a short time, cause if you intend to compress it with MPEG-2, you'll have to use YV12 (indirectly by the MPEG-encoder)) again, and then the chroma gets jagged again.

[MGRip]

Thanks,
Will the mpeg4, WMV & Quick Time have same artifacts as mpeg2?

[scharfis_brain]

yes, they will show up such artifacts, too.

but maybe a little bit weakened,cause they mostly use progressive YV12 sampling, which has better vertical accuracy than interlaced YV12

[MGRip]

So do you say that if I want these titles in sddv, it will be a pain?
But how all the dvds have credits (and small texts) with very high quality (mpeg2 - interlaced)?

[scharfis_brain]

But how all the dvds have credits (and small texts) with very high quality (mpeg2 - interlaced)?

cause they are pure white on black background.

the fonts only gets jaggy, if you introduce color.

the attached image shows this chroma-behaviour. I made it from the sample-video

interlaced-YV12 -> video as it was
progressive-YV12 -> fixbrokenchromaupsampling()
greyscale -> greyscale().levels(....)

[MGRip]

Thanks again for quick reply,

the attached image shows this chroma-behaviour. I made it from the sample-video

I don't see any attachment....

cause they are pure white on black background.

So, if I will change it to white, the jaggies will disappear?

interlaced-YV12 -> video as it was
progressive-YV12 -> fixbrokenchromaupsampling()
greyscale -> greyscale().levels(....)

Is this an avisynth script?(or somthing else)

Thanks,
Mark.

[scharfis_brain]

So, if I will change it to white, the jaggies will disappear?
exactly!

hm.. the forum must have been lost the attched image, so here it is from another space:
http://home.arcor.de/scharfis_brain/samples/compare1.png

as you can see, the jaggyness is most worse with interlaced YV12 followed by progressive YV12. YUY2 and RGB24 are best.

(btw. I used some tricks to create this image, please do not start thinking, I would be able to remove all the jaggyness!)

[MGRip]

Thanks,
The image very helped me.
So I think my last quastion would be: How can I make dvsd file with YUY2 or RGB color space?

[scharfis_brain]

How can I make dvsd file with YUY2 or RGB color space?

this is NOT possible!

cause DV always uses 4:1 reduced chroma
NTSC: 4:1:1
PAL: 4:2:0

but yuy2 is 4:2:2 and rgb24 is 4:4:4

[MGRip]

Thank you very much, you have no idea how it helped me!!
Now the text looks great!
Here my final result (compressed):
http://magin.butbul.net/vids4_4.avi (xvid)

Thanks again,
Mark.

[scharfis_brain]

hehe, looks nice!


Short remark (not meant to be personally):
But what I do not understand is, why people always want to use 100% saturated colors (pure red or blue most times) for their text-inlays for their video ?!?
(I have to explain this issue everytime in RL, I help someone with video...)

Also full saturated colored texts are much harder to read then a lesser saturated one, cause the human eye has much more native resolution and sensitivity for greyscale than for chroma.

[MGRip]

In my case, I didn't know this, I just wanted to create good looking titles, colorfull, but now see that less saturated look a lot better (very easy to the eyes). I haven't done any color comparisons before... I didn't know what best for human eye, and for the video, but now I know thanks to you :)