Pixel-Perfect Antialiasing

Padicus wrote on 12/11/2023, 2:53 AM

Hello everyone,

I am a sound engineer and I teach online. I'm trying to make educational videos on music production. I am using Vegas Pro 18 for this, but I am having a little issue that, while it's not a dealbreaker, it's very annoying.

I use screen-captured videos and stills of my audio workstation, which has three screens, one at 4K and two side screens at FullHD. I make my videos at FullHD resolution, so when I use media at 4K I use event pan/crop to do a pixel-perfect zoom, so you can see a section of my computer screen at 100% size instead of the full screen at a smaller scale.

When the pan/crop is static, this is fine, but when I move it around the image, I get aliasing artifacts. I mostly show audio editing software (Cubase, Ableton, Pro-Tools), which has plenty of 1-pixel-wide lines and grids. These lines get blurry with the pan/crop motion because they are being antialiased (or maybe that isn't the right term. I'm a sound guy, video is not my area of expertise. I hope you get what I mean). Is it possible to deactivate this only for the clips that I use pan/crop motion on? I would still need the antialiasing to keep the text legible when I zoom out a 4K image into a 1080 render.

Maybe I'm missing something obvious here, maybe it can't be done the way I want. Any help is appreciated.

Comments

EricLNZ wrote on 12/11/2023, 4:28 AM

We need more info to sort out what is happening here. My first thought is are your media frame rates all the same and the same as your project and final render output?

Padicus wrote on 12/11/2023, 4:33 AM

I usually capture video of my screen at 60fps and then render my project at 30, but it happens when rendering at 60, and even with still screenshots instead of video. I also always disable frame interpolation to avoid intermediate blurry frames.

mark-y wrote on 12/11/2023, 8:01 PM

Upload an example to Drive or Dropbox.