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16 bit vs. 24bit timeline
I’m just about to the final output of a broadcast doc project and notice that the sequence is set for 24bit audio. I’ve always worked with Easy Setups that I’ve created for 48Khz 16bit audio. So my questions are:
When did FCP begin to include 24bit as a default? I must have been sleeping through a render when it happened.
I can import 16 bit audio files into a 24bit sequence and they don’t require rendering. Usually if the media spec doesn’t match the sequence it has to be rendered. I don’t understand why in this case they don’t, is it an open timeline thing? The sequence doesn’t indicate that it is realtime playback. Does this have any negative effects on the 16bit tracks like level, duration or pitch changes?
Any input would be appreciated.
cheers,
Greg NosatyCinemontage Productions Inc
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3 Replies
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What are all of the sequence’s settings? HD? SD? how did you create them?
Jerry
Apple Certified Trainer
Author: “Jerry Hofmann on Final Cut Pro 4” Click here
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It’s a standard def sequence in Prores HQ 48Khz audio chosen from easy setup.
I know how I got there and how to change the settings. My question is about what effect, if any, there is on 16 bit audio when placed in a 24 bit sequence, and why it doesn’t need to be rendered.
cheers,
Greg NosatyCinemontage Productions Inc
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I can’t speak technically here, but probably the only time there would be any change to your audio would be if you added audio filters. Otherwise you are just playing 16 bit audio in a 24 bit mixer. I’m guessing that for most simple things, FCP is adding the extra bits on the fly. Generally, 16 bit is fine for delivery, but for mixing and processing, 24 bit is desirable.
Gordon Gurley
Director of Operations
Stanford Video
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