-
24p Process
Okay, here’s the deal (really need some help, hope anyone can help out, please):
So I shot some footage with a JVC GY-HD100. The footage is all green-screen key, 24p SD. Unfortunately, the camera was only a borrow, so, when I digitized the footage, I used my own Canon GL2. I opened a new Premiere Project as a SD 24p setting. The footage shows up through Premiere as being 23.97 (or somewhere near there, some frames show as 24.01(?)), but either way, the timecode of the timeline is 24 frames.
From here, I dynamic linked my After Effects comps to key the green, motion-track, etc. Problems being:
1. When I digitized through a Canon GL2, did I screw up 24p somehow?
2. During motion, it seems as if the footage shows wavy lines every 3-4 frames. It also seems as if there’s a lot of motion blur. Is this normal? Why would I have these wavy lines?
3. I still need to shoot new footage with the GL2 (29.97 interlaced) for the same project. Plus I need to create graphics through AE for the project. Plus, it is for SD television broadcast. How do I combine these elements? I assume it results in me turning the 24p footage into 29.97 NTSC. Any thoughts on how to do this?
If anyone has any suggestions for a workflow it would be greatly appreciated. I have been told through the AE forums to do this:
-
3 Replies
-
I don’t know as much as many people on this forum, but I do shoot with the JVC GYHD100 and in 24p.
23.976 is what you want. Or if the program is rounding it to 23.98. When you put the footage into the timeline, did you have to render? That’s a very good sign that there’s something wrong with your project settings.
They should be:
General
Editing mode: DV 24p
Timebase: 23.976 fpsVideo Settings
Frame size: 720h 480v (0.900)
Frame rate: 23.976 frames/second
Pixel Aspect Ratio: D1/DV NTSC (0.9)
Fields: No Fields (Progressive Scan)I would also suggest trying to borrow the camera to capture again if possible. Sometimes cameras are picky with the tape they get. That could explain the wavey lines too.
Dynamic link really only seems to work per shot. So when you DL something, do it by shot if you can, unless the animation is over more than one shot. Then you might try just making an After Effects project of the same settings as your premiere project and making the background of the animation transparent, or black might work. Then superimpose it over the footage after exporting it. (I wanted to try that with something, but it was just a guess as to whether it will work. Might want to make sure with someone else.)
In order to combine framerates in a project, I *think* you’ll need to export your 24p project to microsoft dv avi, the uncompressed 29.97 avi. And then put that into a new project with the dv 29.97 settings, and then capture and add in your new footage.
Then whether you want the graphics to look like the 24p stuff, framerate/filmic wise, or if you want it to look like the new 30 stuff you’re shooting depends on when in that process of converting to 29.97 you do it and want to do it in.
I hope that gave you some answers. I’m in a hurry, so I’m not sure if it was coherent or helpful or answered everything!
Good luck!
-
Thank you very much for the reply. I am pretty sure that I will, one way or another, have to find a way to re-digitize with the JVC. One more question for you if I may. When you capture with the JVC in 24p, do you not get any wavy lines or interlaced artifacts? Do you notice alot of motion blur? I’m trying to figure out if any of this is normal in Premiere previews or if the capture is bad. Thank you for the reply again and hope to hear back from you soon.
-
No, I don’t get any blur or lines or anything at all. If it’s not that you had to render it right away when you put the footage on the timeline, then it might just be a weird way the Canon is playing it back because it wasn’t shot on that camera.
Reply to this Discussion! Login or Sign Up