Showing posts with label videosyncrasies. Show all posts
Showing posts with label videosyncrasies. Show all posts

December 1, 2010

Mishandling video fields and pulldown


Chris Meyer ponders Mishandling Pulldown and offers a guide to resources on fields and 3:2 pulldown:

"Computers and most mobile devices require progressive-scan video for optimal display, but many video download services are incorrectly handling sources with interlacing and pulldown. ...I can understand where people with a print, photographic or web background would be caught off guard by some of the weird special cases of video. But if your job is broadcasting or selling video…I have considerably less sympathy for you. But I’m here to help.
[...]
Now, if I could just get our local network affiliates to stop deinterlacing their still image graphics…"

It's really awful on cable when they don't get fields right on SD and upscale to HD. And the same imagecasters aren't going to keep your pretty gradients intact either
, so it might be better to stick to ones that look good rendered in 8-bit, as noted in Remove banding in After Effects.

May 20, 2010

Freeware video file analyzers

A thread on the After Effects-List, mentioned several freeware video file analyzers beyond the obvious information functions in Quicktime and VLC media player:

November 26, 2009

Deinterlacerator: an After Effects Custom Effect

Fix Interlaced Footage With Deinterlacerator! – Custom Effect by Jorrit Schulte on AE Tuts shows you how to adjust various slider thingies in ways that might not have occurred to you. While using a 3rd party filter is much easier, this tutorial will exercise your AE muscles. You'll have to compare the benefits of various methods yourself.

March 5, 2008

Field order & video misconceptions

Trish & Chris Meyer are posting their library of tutorials on After Effects and video onto their ProVideo Coalition blogs: Creating Motion Graphics and CMG Keyframes. The latest ones debunk common misconceptions on field dominance, field rendering, and time code; others clarify luminance, float, aspect ratios, and more.

Plus there's Favorite Technical References if you want extra geek.

They also have a video/DVD explaining all this quite effectively: VideoSyncrasies, The Motion Graphics Problem Solver.