Macroblock

Replacing green screens with LED displays as the backdrops have been discussed and applied in virtual production. In the episode, the lecturer started with the shooting concept and led the audiences to understand the principle of LED displays. As for the shooting challenges, he used actual pictures and videos to explain the following shooting issues: black scan lines, bright and dark lines, extra grayscale and grayscale loss, and flickers at low brightness. The episode will let the audiences quickly understand these common problems. In the future, they can use these materials as a basis to further discuss the requirements and specifications of the LED display for shooting with the suppliers.

*Benefits of replacing green screens with LED displays, please refer to the white paper: LED Displays in Movie & TV Production (https://bit.ly/3fhrYVS)
*Common shooting issues with LED displays, please refer to the technical article: Examining LED Displays for TV and Movie Production Applications and Common Camera Shooting Issues (https://bit.ly/3oN667P)

00:17 Shooting challenges
00:40 Exposure time vs. Shutter speed vs. Shooting result
01:29 The principle of high refresh-rate LED displays (S-PWM, Scramble)
02:21 Time-multiplexing LED display introduction
03:00 Black scan lines: root cause and solution
03:50 Bright and dark lines: root cause and solution
05:34 Extra grayscale and grayscale loss: root cause and solution
06:21 Flickers at low brightness: root cause and solution
07:35 Summary of shooting challenges
08:02 LED driver IC recommendations