slow motion lipsync

CacheMoneyVideo

CacheMoneyVideo

Well-known member
i know that when shooting in overcrank you won't get any audio. how do i capture audio while recording in slow mo? will audio be recorded when a signal is going to line in?
 
You could record in 60P and slow down in post, but the value of that is questionable -- the audio will be distorted, you'll have to fix the pitch in post.
 
or maybe i can just shoot overcrank and try and match up audio in post, but with no audio guideline whatsoever thats gonna be hard.
 
:) I don't realy wana be a wiseguy , but why do you need sound in slow motion, mostly I gues you will use music with slow mo or you can easely dub a sound ( impacts or other ) voice is less used wright. If you do wana use a voice calling or something you best dub it with some echo or others. If you do want the original sound maybe you can use a second cam from a friend and record the soun with it. Just an idee

Greeths,
Guy
 
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Find out how slow you're going to shoot it first. For example, say you're shooting it at 60 fps then slowing it to 24.

You'll want to record the audio first, then speed it up by 2.5 times the speed. (So in post, edit the audio speed to 250%) Then record the scene in 60 fps and get the actors to lipsynch to it. Then, when you slow the footage to 24fps and you take the audio back to 100%, they should match up.

I think...
 
First, be aware that the stated frame rates are not exactly the frame rates. This becomes important when you're trying to do calculations like ilooklikemark mentions. For example, 12 fps is not 12.000 fps, it's actually 12.26. And 48fps is not 48.000, it's 48.17. So if you were going to play the song at double speed and shoot at 48fps (for playback at 24fps), be aware that it's not gonna work exactly like that. The concept is correct, but the math has to be adjusted to take into account what the true frame rate is.

Second, if you want to record the audio too, shoot in 720/24p mode, not in 720/24pN mode. You'll have to run the frame rate converter in post, but at least your audio will get recorded.
 
Make a double speed copy of the music for the singer to lip sinc to. Record 60p and slow down. If she is good at moving her lips fast... which most girls are... then no problem.

-Kevin
 
Barry_Green said:
First, be aware that the stated frame rates are not exactly the frame rates. This becomes important when you're trying to do calculations like ilooklikemark mentions. For example, 12 fps is not 12.000 fps, it's actually 12.26. And 48fps is not 48.000, it's 48.17. So if you were going to play the song at double speed and shoot at 48fps (for playback at 24fps), be aware that it's not gonna work exactly like that. The concept is correct, but the math has to be adjusted to take into account what the true frame rate is.
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After all the complaints about 25p with the HVX200 50 Hz version this could be an advantage - isn't it? So 50fps and 25fps should work.
 
Help! I've just bought HVX and even made some indoor tests with proper light and etc. But i'm gonna use it mainly outdoor and in the mountains (snowboard films). But here (Moscow) is really a big deal to get any info on this cam. Sorry for this long intro, so the question is what is the main difference between 720/25p and 720/25pn formats? Is it about the quality or what? Slo mo is more than important for me! As i can understand when shooting slo mo in 720/25p and 720/50p in is not displayed during playback so i should change the speed while editing? - But it is pretty hard to make it correct... Thanks for giving any comments about that!
 
Pashtete: I REALLY suggest reading the HVX manual BEFORE reading this forum. Reading the manual will answer your question. After you read. RE-READ. Welcome and good luck.
 
SurJones said:
Pashtete: I REALLY suggest reading the HVX manual BEFORE reading this forum. Reading the manual will answer your question. After you read. RE-READ. Welcome and good luck.
Click to expand...

THANKS A LOT OF COURSE ????? ??????! But i might be not that good at professional tearms in english - thats why i'm asking! Belive me manual was the only book i've read for the last week.
So may be someone not that much "smart" could answer me?
 
jjb said:
After all the complaints about 25p with the HVX200 50 Hz version this could be an advantage - isn't it? So 50fps and 25fps should work.
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The math would be easier for some frame rates, in that 12 = 12.500, 25 = 25.000, and 50 = 50.000. But all the other frame rates are slightly off of their stated numbers.
 
BTW, I shooted with a PAL HVX at 720p25P 50 frames and then in FCP I couldn't use the frame rate converter (it couldn' work with 50fps) ¿¿?? I don't understand why ¿? PAL users can't shoot at 720p 25P & 50fps -to use the audio in post- ???
 
Pashtet said:
so the question is what is the main difference between 720/25p and 720/25pn formats? Is it about the quality or what?
Click to expand...

It has nothing to do with quality. In 25p mode there are actually 50 frames per second being recorded to the P2 card, each frame is recorded twice. Then in post you extract the 25 flagged frames to edit 25p. In the PN mode or "native" it only records the 25 distinct frames per second to the card so therefore you will get more footage on a card.


Pashtet said:
Slo mo is more than important for me! As i can understand when shooting slo mo in 720/25p and 720/50p in is not displayed during playback so i should change the speed while editing? - But it is pretty hard to make it correct... Thanks for giving any comments about that!
Click to expand...

You can do slo-mo in camera and also watch it back instantly on the camera. You have to go to your recording set up menu and select 720/25pn, then go to the scene file menu and change the frame rate to whatever you want. I think there are about 11 differnt selections with the PAL camera, with 50fps being the fastest which would give you a 50% slo-mo look.
 
Buy Barry Green's book it will explain it all in plain language. It will be easier to understand than the manual's technical format, for someone who's first language isn't English.

Maybe you can translate the book into Russian for Barry, and do a great service to other Russian speaking filmmakers.

http://www.dvxuser.com/articles/hvxbook/
 
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