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Render Errors

Symptom #1: Red Render Lines in 24P Sequences

“I keep getting red render lines in my 24P sequences. Which frame rate is correct?”

Background

The generic term 24P, when used with DV, DVCPRO, and certain HD formats, is actually something of a misnomer. 24P footage recorded on DV-NTSC is always 23.98 fps recorded with a pulldown at 29.97 fps. Even 23.98 fps is something of a misnomer, because it is a contraction of 23.976 fps. Because 23.976 is a mouthful, editors commonly refer to it as “twenty-three nine eight.” This should not confuse you too much, but it is rather important to understand. Some formats, such as Panasonic’s DVCPRO HD, can use variable frame rates from 23.98, 24, 30, and 60.


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