720/24p vs 720/24pn

New_Zealand

New_Zealand

Veteran
HVX200a - I film in 720/24pn but was wondering what is the differences between shooting in 24p vs 24pn beside the fact that the 24pn gives you 42 minutes and 24p gives you 17 minutes of record time.
 
24pN gives you a native 23.976 file. 24P embeds the 24p frames in a 59.94 file with a 2:3 pulldown.

There are very, very few instances where shooting 24pN isn't better. However, you can't stream out through firewire shooting 24pN.
 
There is absolutely no reason to shoot 720/24p vs PN. PN is native mode, meaning only 24 frames are recorded in the stream, i.e. it is true 24fps. 24p is simply embedded in the 60p stream, so it takes up more space and the actual 24p has to be extracted. There is simply no reason to shoot that way.
 
There is if you want to stream. Or if someone wants the footage that way. But for the most part, no, there's little reason.

Especially if you're using variable frame rates.
 
Is there any problems to shoot 720pN when i am shooting a tv broadcast.. I will encode the file to 720x576 H.264 25fps or 1280x720 25fps H.264 MOV (pal)
I am using final cut log and transfer tool, what settings i need to setup in final cut easy setup, Is the DVCPRO HD 720p25 the right settings?
 
If you're going to edit and export, then no, there's no problem. If you were going to hand off for broadcast immediately and no one was going to edit, and just broadcast the file as-is, then you wouldn't want to shoot N.
 
David Jimerson said:
If you're going to edit and export, then no, there's no problem. If you were going to hand off for broadcast immediately and no one was going to edit, and just broadcast the file as-is, then you wouldn't want to shoot N.
Click to expand...

Yes i will export, and the final file are 720x576 H.264 25fps or 1280x720 25fps H.264 MOV (pal). So i can use edit settings in final cut "DVCPRO HD 720P25"?
 
Why people say that "use 25p if you want material like movies" , i make tv news etc so is that 25p like wrong to use.. is it better to use 50p or 50i ? I have to use a PAL. 25p is 25fps and the final material must be 25fps so why to shoot 50p and make a down convert to 25fps ?
 
Gary Huff said:
There is absolutely no reason to shoot 720/24p vs PN. PN is native mode, meaning only 24 frames are recorded in the stream, i.e. it is true 24fps. 24p is simply embedded in the 60p stream, so it takes up more space and the actual 24p has to be extracted. There is simply no reason to shoot that way.
Click to expand...

I use this all the time to stream to Quicktime Pro and capture a feed from one camera in a 3 camera shoot of a guest speaker series. The client wanted a file at the end of the night that they can clip quickly and blog. Also the current distribution is time limited so I hand off one angle for client review then edit the entire event and at any time the client can extract any relevant or timely section. I use one HVX at 720/24pN, one at 720/24p and an HMC40 for a "go to" medium to wide shot.

There is no reason to do anything we do in this biz, until the Director or Client wants it.
 
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