What is the difference between 2:1 and 2:1s resolutions?

[Michael Kammes]

2:1s is an older Meredien based resolution.

2:1s has 1 field per frame.
352 x 243 (NTSC) and 352 x 288 (PAL)

2:1s was once a great format for multimedia content creation (CD-ROMs, etc.)

2:1 has 2 fields per frame.
720 x 486 (NTSC) and 720 x 576 (PAL)

2:1 was often a good balance of quality and drive space “back in the day”.

~Michael

.: michael kammes mpse
.: senior applications editor . post workflow consultant
.: audio specialist . act fcp . acsr
.: michaelkammes.com