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-   -   24p questions (https://www.dvinfo.net/forum/canon-xl-gl-series-dv-camcorders/34265-24p-questions.html)

Gregory Dillard April 14th, 2006 09:52 PM

Shooting 24P on XL2 and editing with FCP 5
 
I shot it in 24P.

Gregory Dillard April 14th, 2006 09:53 PM

Shooting 24P on XL2 and editing with FCP 5
 
24P advanced. sorry.

Adam Bray April 14th, 2006 11:13 PM

Not to hijack the thead, but what is "24P advanced"?

Greg Boston April 15th, 2006 06:23 AM

Quote:

Originally Posted by Adam Bray
Not to hijack the thead, but what is "24P advanced"?

24p advanced is a recording of 2:3:3:2 which will allow for 24 complete stand-alone frames to be recovered from the 60i stream out of the camera. You edit this on a 24p timeline in the editor much as you would film.

Regular 24p is recorded as 3:2 and during the recovery from the 60i stream, 1 frame has to be recreated out of 2 fields and is edited on a regular 60i timeline.

The best graphical and textual discussion of this concept I have found is on Adam Wilt's website. Go check it out. http://www.adamwilt.com/24p/index.html#24pRecording

-gb-

David Jimerson April 15th, 2006 08:20 AM

If you have an NLE which will remove pulldown from standard 24p, you can edit that in native 24p as well. You're not stuck in 60i.

Ash Greyson April 15th, 2006 01:27 PM

24P can convert to 29.97 and look just fine... 30P can convert to 29.97 and look fine. 30P to 24P will look terrible. 30P to film out will look terrible. 30P to PAL will look terrible. With no interlaced fields to blend, to get 30p to 24p, you just lose 6 frames which gets very jumpy.

If you intend to mix 24P and 30P you need to deliver in 29.97 NTSC, I would recommend shooting the 24P in 2:3 mode, not 2:3:3:2. For now I think it will look best if you do everything in a 29.97 timeline.


ash =o)

Brett OBourke April 17th, 2006 04:08 PM

60i, 30p, 24p: which is best for internet?
 
I'm new to the board, so be gentle.

I just got an XL2 for shooting short documentaries for a webmagazine. Frankly, I have only the slightest notion of how to use the thing, but I will learn.

Meanwhile, if anyone could give me a thumbnail summary (or perhaps a link to an article) of the difference between the three different video formats, which is best for posting on the net and why, I'd be extremely grateful.

thanks in advance.

BO'B

Greg Boston April 17th, 2006 04:11 PM

It's best to go with lower frame rates for web based video. This helps cut down on overall file size while maintaining visual quality. Folks will generally accept a lower frame rate rather than a heavily compressed picture.

Congratulations on your new XL-2! This camera does good stuff out of the box, and great stuff after you tweak the picture adjustments. You have lots to read and there's no better place than the XL-2 forum here on DV-INFO.

Good luck and have fun,

-gb-

Brett OBourke April 17th, 2006 04:37 PM

thanks, Greg.

What are the advantages/disadvantages to 30p v. 24p?

K. Forman April 17th, 2006 05:09 PM

An extra 6 frames, to start. Decent web video is 12 to 15 frames a second. The more frames you start with, the more you need to trim, which leaves the motion a little jittery. Each frame you shave, helps drop the file size, much like resizing does.

Mathieu Ghekiere April 17th, 2006 05:37 PM

My opinion on the subject would be:

60i: for mostly 'real' things: soap operas, sport events, skate videos, news coverage, maybe documentaries

24p: for narrative film, shorts...

30p: a kind of compromise between this two, it's also progressive but it has more frames, as Keith already mentioned.

Of course, you can use 60i for a short and 24p for a skate video, this is only my opinion about it.

Giroud Francois April 17th, 2006 07:03 PM

it does not really matter since most conversion software reformat the video to specific parameters.
interlaced is a pain if you are using resized video (except half or quarter sized, since this allow to skip a full frame), so reducing video first to half size is often a must
24p probably brings no benefits and is often difficult to process, since most codec are based on either 25 or 30 images/sec.
25p or 30 is great but unavailable available on most DV camera.

Mike Dickson April 19th, 2006 10:18 AM

60i vs 30p vs 24p
 
Having just upgraded from xl1 to xl2 these options were previously unavailable to me. I video in several arenas but most of it has to do with the outdoors. (hunting, wildlife, sporting events) Would someone please educate me.

Eric A Robinson April 19th, 2006 11:39 AM

25p
 
Hi There

25P is available is you have a PAL XL2. I tend to shoot all my stuff in 25P as I just like the look. At the end of the day all these things that relate to the aesthetics of video or film are just subjective. For example I was looking at some HD footage the other day and I thought it looked just plain crap. What I mean by that it looked too sharp too clear just too perfect. It all comes down to taste. Getting back to the point I would rather keep the frame rate at 25 for web based stuff and lower the quality value. If you use h.264 you can end up with pretty small files that both look and importantlysound pretty good.

Shervin Mandgaryan April 19th, 2006 01:55 PM

24p = Excellent for internet videos and the like, movie quality look

30p = Excellent for internet also, but not as staccato motion as 24p mode, but still gives the same effect

60i = 60 frames, bigger file size when compressed vs 24p and 30p.

My two cents.

Derek Elkins April 19th, 2006 03:36 PM

As a matter of PERSONAL preference, 60i just makes me sick now that I have 30p and 24p. However, I live in the Louisiana area as well and see a number of hunting and wildlife shows on cable access that use 60i (this makes them look VERY local though).

Will you be shooting with a tripod or monopod, or are you going strictly handheld? If you're going handheld, stick with 30p. 24p can get very jumpy if you don't have smooth, slow movement, and I would think that following a duck in the air would require some high-speed panning.

You may want to consider shooting a combination of 60i and 30p, which would help differentiate the feel between hosting/interview segments and action segments.

Regardless, everything comes down to preference, so play around and see what works best for YOU.

Tony Davies-Patrick April 20th, 2006 02:22 AM

For your outdoors (hunting, wildlife, sporting events) shooting, especially if you intend to eventually sell the footage to TV networks or as DVD format, it is far better to stick with 60i.

Derek Elkins April 20th, 2006 11:36 AM

Why's that?

If he planned on converting to PAL for any given reason, I know 24p or 60i, but is there any reason 30p wouldn't work for TV or DVD?

David Jimerson April 20th, 2006 11:58 AM

Quote:

Originally Posted by Derek Elkins
Will you be shooting with a tripod or monopod, or are you going strictly handheld? If you're going handheld, stick with 30p. 24p can get very jumpy if you don't have smooth, slow movement, and I would think that following a duck in the air would require some high-speed panning.

This is generally solid advice, but I'd point out that following an object is a way to minimize strobe -- everyone will be paying attention to the duck, which will seem stationary on the screen (more or less), not the strobing background.

David Jimerson April 20th, 2006 11:59 AM

Quote:

Originally Posted by Derek Elkins
If he planned on converting to PAL for any given reason, I know 24p or 60i, but is there any reason 30p wouldn't work for TV or DVD?

Plenty of reality shows are shot in 30p.

Derek Elkins April 20th, 2006 12:18 PM

Exactly, that's why I didn't understand the advise. Or rather, I was worried I personally was missing something and going about things all wrong.

I've edited a few TV shows that were shot in 30p (mixed with 60i), editing back down to DVCPro and not seen a problem when aired on cable...

Ash Greyson April 20th, 2006 04:22 PM

30p looks great, it does not go to film, PAL, or to a 24P timeline very well... If you plan on mixing 24p and 30p, stick with a 29.97 timeline...



ash =o)

Gregory Dillard April 28th, 2006 05:29 AM

XL2, 24P & 30P and Final Cut Pro 5.0.4
 
Don't know if this topic has been covered, but we are in dire need of a solution for the setup that we have. We have an XL2, and have shot in all of the formats on the camera. However, back at the lab, our FCP setup doesn't say that the footage was captured at 24P. It still says 29.97. I was on the phone with Rudy (AJA Tech Support) as we have an AJA i/O box, XSERVE RAID, SONY DSR 1500A with SDI. Although we changed the settings in the easy setup when we did a simple capture we checked the properties of the clip and it still says that the vid rate is 29.97. Any suggestions, and if we are all over the place, then we apologize for rambling. Thanks for any and all assistance on this issue.

Phil Bowen April 28th, 2006 09:49 AM

Which mode of 24p did you shoot in? 2:3 pulldown or 2:3:3:2?

Ash Greyson April 28th, 2006 02:14 PM

First off, if you shot 30P and will use much of it, you should edit in a 29.97 timline, 30p to 24p looks pretty gross. Sounds like your pre-sets were off... easy fix, use Cinema Tools to process the captured footage...



ash =o)

Gregory Dillard April 28th, 2006 04:32 PM

not to sound ignorant, but how do i process it in Cinema Tools?

Lucinda Luvaas May 26th, 2006 12:39 AM

Another 24P question
 
So sorry to belabor this issue, but I am a little confused and would like some clarification about the 24P, 24Pa issue. I've read many of the posts about this and get the impression that I should go with the 24Pa because this is true 24p. I'm using FCP and I have both a TV monitor, my LCD screen on the IMac and a JVC high res monitor that I purchased for in the field and post work. If the footage is progressive, how will that read on the tv monitors? I do see how to do the settings in FCP. I figured that out. But, I'm still not sure whether to shoot in 24P or 24Pa..... I show my shorts on TV, Galleries and Festivals. I'm filming tomorrow and will try the setting import into FCP and see what it looks like, but if anyone could help that would be great. One problem is that people here have different opinions about settings and such and that's why I get a little confused because I'm new to using 24p. I wanted to try because I have been using 30p on my XL2 and loving how it looks, but I originally purchased the cam so that I could have the broader range and use 24p.

Lucinda

Matthew Nayman May 26th, 2006 06:32 AM

I was very confused for the first few months. Here it is simply.

24p, be it advanced or not, has a certain look. It looks more like film due to the stuttery motion.

24p (2:3) Records 24 Progressive frames, and then adds a pulldown so you can edit in a 60i (regular) timeline. It still looks like 24p, but you master normal DVD's, export to VHS, ETC.

24pA (2:3:3:2) Records 24 Progressive frames per second, but adds a 2:3:3:2 pulldown which means you capture it in a 24p timeline, not a 60i timeline. Your NLE is smart enough to remove the 2:3:3:2 pulldown (it can't remove a 2:3) and give true 24p. This is great for 24p DVD's and if you plan to export to film.

It really becomes a choice between which timeline you want to edit in, and how you want to master the film. But be warned, mixing the two 24p styles on one timeline can be a pain in the arse, and you can't record 24pA on the same tape as 24p!

Matt

Lucinda Luvaas May 26th, 2006 11:31 AM

Matthew,

Thanks for the tip about not recording both on the same tape! I had been planning on doing a test today, using actually three different tapes because I would like to record at 30p and see what the difference is.

I do make dvd's and dvd-r's. Would I be able to do this is I use 24p advanced? or only 24p?

I also screen videos on tv. Would I be able to make a VHS, S-VHS and dvd-r's for this output?

These are my concerns.

I think I have the settings in FCP correct and I do understand the pull down info you sent.

Some threads have mentioned that 24advanced actually looks better than 24p, so that makes me feel that I should go with the former and not the latter? what say you?

I really appreciate your advice because I start shooting tests this afternoon.

I'm going to read more on this, as much as I can, to make the right decision.

One more thing: is it the case, as I think has been said on these forums, that I should use 29.97 in my timeline? for the 24p? I already have the settings for 24advanced....will they both 24padvanced and 24p stutter when I'm looking at the tv while editing?

Sorry to be a novice! in this at any rate. I've been using 30p and as I said, have been delighted with the quality of my Canon XL2.

lucinda

Matthew Nayman May 26th, 2006 02:14 PM

Ok, you can burn 24p DVDs, and most DVD players have intelligent pulldown appliers, which add a 24 pulldown to 24p DVDs so they show on interlace TV screens. As for VHS, I haven't tried. You might run into a dumb DVD player and it'll look funky, but if it's hooked up to a progressive scan TV, the 24pA looks amazing.

I usually shoot the 2:3 pulldown, not 2:3:3:2 cause it looks jsut as good. It keeps it simple and can go on any tape or DVD or VHS! Just not to film (well it can, but complicated).

Lucinda Luvaas May 26th, 2006 04:35 PM

Matthew:

24p stutters,not on the monitor, but on the TV and 24p advanced doesn't move on the TV, but does on the monitor and does when I watch it from the XL2 on the TV......ugh! what should I do now? anyone? please help! can I not watch the output on a TV monitor using 24pa? what should I do about the stuttering in 24standard. I remember reading about that, but don't remember where....and I have my people coming in half and hour...ugh.

David Jimerson May 26th, 2006 06:00 PM

A few points --

ALL DVD players can insert 2:3 pulldown when playing a 24p DVD. Every Hollywood movie is put to disc as 24p.

Lucinda, what kind of a "stutter" are you talking about, and what are you playing it from?

24p (in general; any pulldown, and 24 fps film as well) will strobe, and possibly badly, if you move the camera too quickly. If you have that kind of a strobe, there's nothing that can be done about in post; the only fix is to reshoot and move the camera more slowly.

You can watch 24pA footage on a monitor, because it, too, is in 60i; the frames are just arranged differently. However, it's not ideal for for it because it will have more pronounced stutter issues, due to back-to-back repetition of frames in the 60i stream.

Going to a 24p DVD, you do not use a pulldown scheme -- neither normal 2:3 pulldown, nor advanced 2:3:3:2 pulldown. You encode a straight 24p file, and then the player inserts 2:3 pulldown.

FCP should have no problem previewing out from either a 24p timeline or a 60i timeline to a TV.

If you shot in 24pA, then edit in a 24p timeline in FCP, and capture accordingly. You can then either render a straight 24p file (MPEG) for making a 24p DVD, or you can render out as DV, re-inserting 2:3 pulldown, to go out to DV tape or VHS.

If you shot in 24p (standard pulldown), then in FCP, it's easier to edit on a 60i (29.98) timeline -- but you will have to go through a number of hoops to make a 24p DVD. Because you never remove pulldown, making a DV or VHS tape is no worry.

Lucinda Luvaas May 26th, 2006 07:33 PM

David,

Thanks for answering my call for help.

I meant that the footage looks somewhat jerky on the TV, not the IMac, not in FCP and this is in standard 24p. I was able to watch on the TV monitor with this frame rate, but when I tried to watch the 24padvanced, the TV just stayed on one frame while it progressed on my timeline. It I scrubbed the timeline, the images would scrub on the TV, but so far I've not figured out how to get the TV to work properly, to move as the timeline is. My settings in FCP are for the 24padvanced, not 24p. Are you saying that I should have shot the test footage in 24padvanced and then used settings not for 24padvanced, but 24p in FCP? I used the 23.98, instead of 29.98.

It seems to look lusher, the colors and clearer in 24pa too. Is this the case? or are both 24standard and 24advanced the same? I know one is true film frame rate and the other is not.

Also, I have a dvd recorder, not a burner. I record my dvd's in real time...dvd-rs, so I'm not sure that my Panasonic DVD recorder will read and burn 24p or 24padvanced. Do you know by any chance?

Thanks so much if you can help me with this.....I am so very grateful. I am reading and researching as much as I can and am sure that I'm find the answers.

David Jimerson May 26th, 2006 10:09 PM

Well, unforunately, I don't have enough time in the trenches with FCP to really pinpoint your problem there, but if you captured the 24pA footage correctly and are editing in a 23.98 timeline, then FCP should be able to display it properly on your TV. You might want to check in the FCP areas for advice on that. I'm actually a Vegas guy.

There's a persistent myth out there that 24pA is "true 24p" and that 24p standard isn't, but that's just not so. 24p and 24pA should look, in terms of color, etc. identical unless you shot them with different settings. The only difference between them is how the frames are split up and put into a 60i stream. Otherwise, they're the same. They are both acquired by reading the CCDs progressively (whole pictures, not fields) 24 times per second. They're both recorded to tape as 60i -- just in a different arrangement of fields as compared to the original 24p frames.

24pA is more efficient in terms of extracting the original 24p frames from the 60i stream, so it's ideal if you want to edit in native 24p. But it's no more "true" 24p than 24p standard is.

About your DVD recorder --

I doubt seriously that it burns 24p discs, because the feeds going into it are going to be 60i (29.97). Your preview feed from FCP will be, so it will record to DVD as 29.98. That being the case, make sure FCP is previewing with 2:3 pulldown (which I'd think it does at default, if you even have a choice). As far as your DVD recorder will be concerned, it's just receiving a 29.98 feed.

The only way to burn a 24p DVD is to use an authoring program capable of it and burning it with a burner, because you have to make a 24p file, no pulldown at all.

(NOTE: 29.97, 29.976, and 29.98 all generally refer to the same thing; different apps note it differently, because all three of them are just approximations. Same with 23.976, 23.98, 23.97, etc.)

Greg Boston May 26th, 2006 11:17 PM

Lucinda,

I strongly advise you to go to http://www.adamwilt.com/24p/index.html and scroll down to where you see in bold type '24p standard' and read those two sections and look at the graphics next to the text. Adam has one of the best explanations I have seen regarding the difference between the two methods of recording 24p into a 60i stream and then recovering it back to 24p.

The difference is subtle, but there is a difference in the two modes. After all, if there were no difference, Canon would not have needed to include both methods in the camera. And as Adam notes, not everyone can see the difference in the two during playback.

regards,

-gb-

Lucinda Luvaas May 27th, 2006 11:38 AM

Thanks David, for your explanation. I'm still not understanding why the picture on the TV stays on one frame rather than progressing. I think I have the right settings unless FCP is changing them back to some default....

I'm not sure about the dvd-r problem tho' and will research that further. I can just try to make a dvd-r and see what transpires. I have a few weeks before my next shoot and want to make sure all is correct in terms of which frame rate I choose.

Someone said on this forum that you can make dvd's, but that might be as you say, if you use an authoring program rather than using the dvd recorder.

I do have FC Studio which comes included with an authoring program...so I might have to go in that direction with this film.

Thanks again for your help!

Lucinda

Charles Penn May 29th, 2006 06:03 PM

Say it isn't so. I'm well into my project/ 16:9 24p
 
Hey guys, please read the embedded email exchange and tell me if Tom is right. Thanks.

Chuck

--------------------------------------------------------------------------------------

That's 24p advanced. That cannot be imported correctly into FCE. It needs to be imported with advanced pulldown removal and is designed for editing in a 23.987 sequence, which FCE cannot do.


On May 29, 2006, at 8:01 AM, Harambe823@aol.com wrote:

Tom, how do I set up my FCE settings to import video shot in 16:9/ 24p with my Canon XL2? I went into Easy Setup and I note 'DV-NTSC' and 'DV-NTSC Anamorphic.'

My camera (as you probably already know) is designed to shoot 16:9 and in fact, I'm told, it is preferred that people shoot 16:9, because the video is better. Then the image is cropped at 4:3, if that is your preference for conventional TV screens.

The FCE Help section alludes to 'Anamorphic' but I believe the instructions are geared toward people with Anamorphic converters. I'm confused.

Please tell me what setting I should use to import my video into FCE with the format I shot it in -- that is 16:9, 24p 2:3:3:2. Also, I used 16 bit audio. Thank you so much for your help.

Chuck

PS: I have your book, 'Editing Workshop.' Nice work.

Matthew Wauhkonen May 29th, 2006 06:48 PM

Yeah, FCP only.

Greg Boston May 30th, 2006 02:41 PM

Quote:

Originally Posted by Lucinda Luvaas
I do have FC Studio which comes included with an authoring program...so I might have to go in that direction with this film.

You've got a very good authoring program in DVD Studio Pro. It will do anythng you want to do with it.

-gb-

Lucinda Luvaas May 31st, 2006 10:29 PM

That's great Greg. I'm sure I'll get around to learning it.

I've got everything figured out with this problem. 24P works fine and looks fine. So all is set to go for my first shoot.

Thanks so much again for your help!

Lucinda


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