Activity › Forums › Adobe After Effects › vob files always look pixelated after import.
-
vob files always look pixelated after import.
Kevin Camp replied 15 years, 4 months ago 4 Members · 17 Replies
-
Richie Tovell
January 19, 2011 at 1:59 amThanks Steve.
I can’t record it of the screen, these screen recording apps just aren’t up to it.
The screen shots are acurate to hoq pdvd playback looks, it’s settings say it’s using native colour and resolution, so no tips there.
It’s a mystery how it upscales like that without any pixelation. I’d be happy if I could fix up the pixelated at 720 x 480.
Coda – musical selections; in film, the ending or last section of a film (often wordless).
-
Richie Tovell
January 19, 2011 at 4:41 amCool, hey I think I’ve sussed it, it’s AE’s deinterlacing.
Thanks for your help Steve, at this stage I usually need serious amouts of moral support lol, but hey I fixed it. The first problem was the interlacing, the second problem is the colour, I’m not sure what causes the image to go so dark and flat but it seems pretty easy to correct, I fixed the deinterlacing in Virtualdub though, it’s a good app.
I even managed to get a decent 1080p render without much pixelation, bellow are some screen shots, it’s pretty close.
https://c.imagehost.org/0720/VTS_02_1_00643.png
https://a.imagehost.org/0156/VTS_02_1_00843.png
What stumped me was that when interpretting the footage in AE was forgetting to set the deinterlacing to “none” after I had already deinterlaced the clips in Virtualdub.
Coda – musical selections; in film, the ending or last section of a film (often wordless).
-
Richie Tovell
January 19, 2011 at 4:53 amLol, btw Dave the other day I had to explain to someone why they were “out to lunch” they just stood there looking puzzled. . .
I know how you feel.
-
Cory Petkovsek
January 19, 2011 at 7:31 amIt’s probably your pixel aspect ratio.
It looks mostly the same in my media player vs after effects with the exception that this is DVD footage with a .9 pixel aspect ratio. If you drag it into a comp and look at it on your square par monitor, it will look crappy and blocky.
Hit the pixel aspect ratio correction button which will horizontally shrink the image, but convert it to square pixels, or work with the footage in a square pixel comp.
Also, you need a better deinterlacer than AE’s default. Red Giant’s Frames cleans up some of the edges better than either of the native blended or interpolate deinterlace modes.
I see no reason to convert it to other codec. Unless it’s lossless you’ll just lose more quality.
Cory
—
Cory Petkovsek
Corporate Video -
Kevin Camp
January 19, 2011 at 4:24 pmhey richie, it sounds like you figured a good workflow… but to expand on the rgb-yuv issue that i seemed to notice.
just converting the mpeg (yuv) to lossless animation (rgb) seemed to help significantly with the issue i saw in the original footage. apples’ uncompressed 8-bit and 10-bit are also yuv, so that might explain why you saw no difference. nle’s and players are probably better suited to using yuv media that ae is — though i don’t know why ae shouldn’t be as good, i do know that ae seems to be rooted in rgb.
interlacing may or may not be the problem… the original file you posted was 24p, and didn’t seem to have any interlacing artifacts — at first i though the color issue was due to improper pulldown removal, but there were no interlacing issues in the luminance, just the brighter colors. also, just converting that file to an rgb codec fixed it, i didn’t try to deinterlace or remove the pulldown, just dropped it into a converter and exported to mov.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Richie Tovell
January 19, 2011 at 5:20 pm[Kevin Camp] “hey richie, it sounds like you figured a good workflow… but to expand on the rgb-yuv issue that i seemed to notice.
Thanks, yes I’m half there but I do need to look in to Yuv.
[Kevin Camp] “just converting the mpeg (yuv) to lossless animation (rgb) seemed to help significantly with the issue i saw in the original footage. apples’ uncompressed 8-bit and 10-bit are also yuv, so that might explain why you saw no difference. nle’s and players are probably better suited to using yuv media that ae is — though i don’t know why ae shouldn’t be as good, i do know that ae seems to be rooted in rgb.”
I wonder; maybe it’s not the deinterlacing in Virtualdub that’s helping, perhaps it’s the codec and simply rendering to avi? I’ll try a straght avi render and let AE do the deinterlace.
I agree with your statement bellow, infact the pixels don’t look like interlacing artifacts more like simple pixelation.
[Kevin Camp]
interlacing may or may not be the problem… the original file you posted was 24p, and didn’t seem to have any interlacing artifacts — at first i though the color issue was due to improper pulldown removal, but there were no interlacing issues in the luminance, just the brighter colors. also, just converting that file to an rgb codec fixed it, i didn’t try to deinterlace or remove the pulldown, just dropped it into a converter and exported to mov.Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW”Was that in mpeg-streamclip? Squared 5? so you converted to the animation codec in this app as well, not in AE it’self?
Coda – musical selections; in film, the ending or last section of a film (often wordless).
-
Kevin Camp
January 19, 2011 at 6:22 pm[Richie Tovell] “Was that in mpeg-streamclip? Squared 5? so you converted to the animation codec in this app as well, not in AE it’self?”
yep, i just dropped the mpeg file into mpeg-streamclip, then just exported to quicktime, choosing what it calls ‘apple animation’ as the compression and setting frame size to unscaled. i assume any encoding utility would work just fine going under the assumption that the rgb conversion is really the key…
also, in ae, i had it set not to separate fields. again, this was for the original media that did seem to be progressive.
the only real issue was the color shift that was probably due to streamclip’s lack of color profile conversion, but again a better compression utility may keep/convert the color profile.
streamclip can convert media straight from dvd too (file>open dvd), though i’ve never tried that.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW
Reply to this Discussion! Login or Sign Up