-
Diagonal Line “Jaggies” on an animaton
Hello,
I created a graphic file in Photoshop consiting of a rectangular shape with a 2 pixel white stroke. In After Effects I made it a 3D layer and did a simple camera fly-by, which looked great.
Since I’m going to use the animation in Final Cut Pro 5.1.2, I rendered it “Lower Field First” with “Uncompressed 8-bit 4:2:2” as my compression type. The animation looks great except that wherever
there is a horizontal edge that is diagonal it gives that “dancing scan line” jitter (vertical lines look great). I tried re-rendering with a 6-pixel stroke on the .PSD file, and also using “animation” as my codec so that it would just be a self-contained Quicktime movie( Also with and without Field Rendering. I know about “Interpret Footage” when it comes to bringing in video clips, but I’m not sure what else to try on this still image. Any suggestions on how to eliminate the “Jaggies”? -
5 Replies
-
there’s no way i know of to ‘pump-up’ the anti-aliasing in ae… although if you have ae7 you can choose opengl 3d from the advanced tab in the comp settings window (assuming your gfx card is capable–check the previews pref in ae and click opengl info to see). opengl does calculate anti-aliasing a little differently (credit: mylenium). you will also need to select opengl render from the render settings for final render, if this works.
if that doesn’t help (and i kind of doubt it will), you can try to soften just the horizontal edges with a slight blur (in just the vertical direction). any number of blurs can be used: directional, fast, gausian… use it on a duplicate of your problematic image and place the duplicate layer behind the non blured layer (you only want the edge to be soft, not the whole image).
-
Thanks! i will give those suggestions a try.
-
Quick follow up question. Are you viewing on a computer monitor or NTSC broadcast monitor.
I’ve experienced problems with aliasing on my editing platform’s project monitor, but when viewed in a broadcast montitor it looks fine. Also remember, computer monitors are porgressive and cannot disply interlaced video correctly.
-
[mindset] “Are you viewing on a computer monitor or NTSC broadcast monitor.”
That would be my question, too. If you’re only previewing on the computer or using Firewire, it may not look correct. You need to go the full route by importing your stuff in the edit suite and previewing it as it is for the final output.
Mylenium
[Pour Myl
-
I’m viewing it on a 19″ NTSC monitor coming through an AJA IO box.
Reply to this Discussion! Login or Sign Up