Talk:Field (video)

Even/Odd == Confusion

While I know even and odd are frequently used to describe fields the terms are ambiguous and confusing, and dependent on the counting system used (if you start at zero or one) I recommend that this article should describe fields primarily in terms of their spatial and temporal relationships to each-other and to frames, and that Even/Odd be relegated to a description of how the terms are frequently used, along with a warning as to the possible ambiguity. Tletnes (talk) 16:54, 16 April 2008 (UTC)

Corrections == For == Progressive Explanation

It is stated that "film is almost always progressive", when in fact, film is neither progressive nor interlaced, motion picture on film is its own entity entirely, with no scanning, rather each frame is projected independently and immediately upon the shutter of the projector opening. In the context of film encoded to a digital video format, the resultant encode is dependent on the profile used, and what system or display the encoded video is designed for. Secondly, it should be noted that interlacing was devised as a way to achieve higher frame/refresh rates to be achieved on original broadcast systems destined for CRT monitors. Broadcast television, however, is not digitally encoded, it is analog.

Furthermore Progressive scanning was not "\[developed for higher resolutions\]", in fact, the PAL standard used throughout most of the world besides North America, Japan and a few other places, uses 24 frames per second progressive scanning for analog broadcasts and predates interlacing which was developed for the NTSC standard to allow the faster 29.97 frame/refresh rate (highest achievable given the properties of the cathode ray tube technology and bandwidth of broadcast channels) which was closer to the 30fps which most legacy film was shot in.

Today, the only digital video that is still interlaced is that which was encoded from original interlaced sources that were primarily analog television and media designed for CRT monitors. With 60Hz standard refresh rates on LCD monitors/televisions and up to 240Hz on high end OLED and newer tech, interlacing is unnecessary for NTSC 29.97 or even 60fps FHD/2K/4K/8K. However, because deinterlacing can result in artifacts that can result in the pull-down video being of lower quality than the original, sometimes deinterlacing is not used when re-encoding (transcoding) legacy digital or encoding legacy analog video.

SO TO BE CLEAR, PROGRESSIVE IS NOT A NEW TECHNOLOGY, NOR WAS IT DEVELOPED FOR HIGHER QUALITY- IT HAS BEEN THE STANDARD IN PAL ANALOG BROADCASTS SINCE THE EARLY DAYS OF TELEVISION. NTSC UTILIZED INTERLACING TO ACHIEVE THE HIGHER 29.97 FRAME RATE (VS 24 FOR PAL). — Preceding unsigned comment added by 108.46.206.82 (talk) 02:42, 12 July 2020 (UTC)