Shooting 30p and exporting in 24p = Bad idea!

Today I share with you why shooting in 30fps and then exporting it in 24fps is a bad idea.

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[halfgraincinematography]

The mentioned problem is correct if you shoot in 30fps and just drop it into a 24fps timeline. But that should be a given not to do. People use the technique of shooting in 30fps and interpreting(!) it as 24fps, because they are looking for the resulting slight slow motion effect, since the shot gets stretched out a little longer. to clarify this: let’s say you shoot a 10 second clip in 30fps and interpret it as 24fps footage in a 24fps timeline it results in a 12.5 second clip without any frames skipped. This of course can only be done when synced audio is not needed.

[Deadseelife]

hey man... as a professional media engineer for MTV Networks.. i've learned quite a bit about cameras and gear from watching your videos. 
i was a little surprised that you were editing like this.  that is always a 100% rule.  never ever edit in a 23.98 timeline unless ALL of the media was captured/shot at 23.98 ("24p").
in the case of documentaries that contain new modern 29.97 interview footage and older 23.98 film based footage...the 23.98 footage will have a telecine conversion run on it to make it 29.97.  in 1 second...it will take 3 progressive frames...then it will have 2 interlaced frames (combining frames 1 and 2....and the other combining frames 2 and 3 of the sequence.)  this is called 3:2 pulldown.
this is done so that if you needed to...you can actually run an INVERSE telecine and bring the file back to the native 23.98.
so the rule is that you can always go from 23.98 to 29.97...but never the other way around. 
another note.. while the term 24P is what we all call it...there actually is a difference between 23.98 and true 24p.  24p is only achieved using very high end cameras like professional Sony cameras used in the film industry.  this is so that they are able to transfer the content to film if that is the plan.  all available pro and prosumer cameras shoot in 23.98.  same with 29.97...although there is no 30P.  it's all 29.97 fps

[Skypointproductions]

I always thought if you record at 30 fps but slow the shot down to 80% the original speed that would equate to 24 fps so you wouldn't get any dropped frames if on a 24 fps time line? Same thing if you're filming at 60 fps as you can slow it down to 40% which equates to 24 fps, so you could get some slow motion in the mix without any frames dropping? But if you don't slow it down then the dropping of frames would occur but if you slowed things down to the perfect amount to equate to 24 fps then your solid right or no?

[ricr.]

I'm confused now. there's has been YouTubers telling us to shoot drone footage 30fps then edit in 24fps and export in 24fps to get smooth video. which is which?

[uxartmusicvideo-andphotogr]

You can also change clip speed so that every frame is on right time when you render full video and mixing different frame rates. It makes clip longer or shorter depending on fps. Video is basically just audio file and lot's of still images showed at right time to get movement. Faster the movement more frames in shorter time period is needed.

[glebrao]

man, FINELLY one video going straight to the point of this THANK YOU!

[airindiana]

I don’t think it’s mega clear in the video but I don’t think this is an issue if you want the footage to slow down. For instance dropping a 60FPS clip into a 24 FPS timeline in FCPX just makes it slow mo. Ive just done it and it’s not skipping, it’s just slower. It’ll still play 24 frames a second but it will stretch your clip out as far more frames to get through in a given time. You can see this as a 5 second clip at 60 FPS will stretch out to be much longer when you drop it in. You can do the same with a 30 FPS clip. I think the problem is when you want a 30 FPS clip to play back at “normal” speed in a 24 FPS timeline. I think that’s the issue the video is discussing althogh I didn’t pick him up making this distinction.

[paulaungiers]

I have a 29.97fps movie. When I burn it to dvd, which automatically converts it to 25fps, (I can't alter that), my movie comes out slightly jerky! What do I need to do to the movie to make the motion come out onto dvd, looking smooth, please? Would it be more steady if I was to pass it through a 30fps converter first; then burn to the 25fps dvd maker?

[paianis]

Not only that but if your monitors are being fed a 60Hz signal from the GPU, there will be stuttering as 60 doesn't divide by 24 cleanly. If your monitor can support a 48Hz or 72Hz refresh rate at it's native resolution, that would be preferable for 24p content.

[ghilliemanreviews]

What about shooting in 30 and slowing it down to 24 to put on a 24 timeline? Same as 60fps? Would it still look choppy?

[amarandrim]

yo bro i shoot in 25p 50m can I have 30 fps when I export and edit

[jerrywongts]

thanks for sharing this, ive been searching for some understanding with this question!!

[mancavepc]

eye opening! so many videographers are caught by this trap at one point (myself included numerous times). in my opinion never drop frames, instead slow them down. also, always slow down your slider movement, pan/tilt for lower fps. keep testing until you find the correct camera movement speed for your fps settings. also judder gets much worse in close detailed shots and in steady camera movement speeds.

[Jessewatt]

What about 60p and 24 p footages combined in the same 24p sequence ?

[ScttPrian]

I'm curious if the future of video files will allow frame rate automation. Perhaps future cameras will allow for a change of frame rate, and video editors will receive data and automatically adjust. Or frame rate no longer matters, and what is shot is how it is displayed. I can dream! (probably already done)

[into.the.wood.chipper.]

The newer video converters can handle 30p to 24p, as they use AI. I converted a short film and it looks fine, even slow camera moves don't look choppy.

[petrstolz]

Shoot at 50p and export at 25p. Then the dropped frames are equal and there is no problem. Or 100p exported to 25p. The problem are the NTSC strange frame rates, where the editing software must drop the frames not equally. PAL standard is always incremental as FPS goes.

[markkilby]

But if you wanted to slow down the footage by 20% making it 80% speed it would be okay because then you would regain the 1 frame drop. So for slowing down footage this is okay for anyone who is confused and like omg I was going to shoot in 60 and slow mo whats going on, how would I slow mo without a different frame rate. Or am I wrong?

[esmpmedia]

What about shooting at 30fps and slow down to 80% in production?

[namonox]

So, say we shot in 30fps, and need to edit/export in 24fps. Is there anything we can do to minimize the choppiness?