Sound question

S

sharry

Well-known member
Hey all... I am shooting a short film. Currently we are in production. I am shooting it on the 550D. I dont have money to buy an H4N. And the country where I live nobody rents it. All we have are the really expensive sound recorders that they use in advertisements and feature film. So a friend of mine has a Sony Z1. I was thinking of shooting the images on the 550D and the sound on the Z1. Here is the question. Z1 can only do 25fps. What I am thinking is, that in order to match images with sound, I have to shoot the images on 25fps as well... Or am I wrong. What if I want to shoot the images on 24fps and have the sound on 25 fps? What can I do to the sound so that it perfectly matches? What workflow should I follow for this? Thanking you guys in advance.
 
The Z1 is a camera - why use it only for sound and do the picture on a DSLR? Make no sense to me. Shoot both video and sound with the Z1 and be done with it.
 
Take the Z1 material into a 25fps sequence then save just the audio as your favourite audio file type and then import that. It only goes wrong when you insert video at the wrong frame rate - audio as aiff, wav, mp3 etc will be fine. The Z1 records audio adequately as long as you have enough level, but always sounds a bit compressed to me. An alternative would be to get a decent USB powered audio interface and record the audio direct to your computer. I've started using my macbook pro to record from my camera and it works pretty well - I'd be happy using it to record audio.
 
stefanhuberfilms said:
you'll have to speed up the 25fps recorded sound by 4%, so you'll get the right speed, bit faster, but right :)
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Audio does not care about frame rate. As long as it is stripped from the video (or, as has been suggested, exported to a WAV or AIFF file), it'll work in a sequence that isn't 25fps. What does matter is sample rate, so as long as you keep the audio at 48kHz you should be fine.
 
Thanks all! Yeah shallow depth of field and I guess better quality and no artifacts in image is what I am looking at.
 
stefanhuberfilms said:
oh, my mistake :) thanks!
Click to expand...

You were not exactly wrong. If you needed to use the footage and the sound you would need to change the speed.

But in this case everybody is running in "real time" so they will stay in sync as long as you don't change either's speed.

The suggestion above should work. If you have a mac and QuickTime Pro (they unfortunately don't do a "PRO" version anymore but...) you can open the clips and save the audio out from there.

however you separate it, once the audio is no longer married to the video it won't have a frame rate linked to it so you can use it with out weirdness.

The audio never had a frame rate but when it's married to the video it will change with the video so it has a frame rate linked to it than could cause problems.
 
...What mics are you using to record your sound?

I am guessing that if you can't afford a recorder, that you are not using a mixer either. Yes?
 
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