Understanding compositions with different frame rate

Hey everyone,
I am working with AVCHD footage with a frame rate of 25.
If it drop my footage into a new compostion after affects sets everything
up automatically.
I'd now like to what happens to my avchd clip if I change the frame rate
of my compostion from 25 to 24. What excatly happens to the frame
missing? Does AE just gets rid of it?
Does it make a difference if I just change my comp settings from 25 to 24
or if I drop my 25 comp into a new one with 24.
Thinking of it the other way around, if I change my frame rate from 25 to 50,
does that mean that AE doubles the frames of my files?
In general, does the changes have any impact on the speed of my footage?
I'm looking forward to your reply. Much appreciated.
Best,
Alex
PS: this count for Premier Pro aswell?

When you create a layer in a composition, and that layer is based on a video footage item, the composition checks at each composition frame to see (sample) the data from the footage item. If there isn't a single frame of data from the footage item that exactly lines up with the frame in the composition, then the composition samples from the footage frames on either side and does one of several things: It can either just pick one of the two frames, or it can just mix them together, or it can do something much smarter and try to reconstruct the image that would have existed between the two frames.What it does depends on what frame blending setting you're using.
When you're using a footage item that has a higher frame rate than your composition, and both frame rates are relatively high, you don't need to worry about this at all, as the default settings tend to work just fine.
To sum up, changing the frame rate of the composition just changes how often the composition samples the image data from the footage item. It does nothing to the footage item itslef and doesn't affect how fast the video from that footage item plays in a layer.
To interpret a footage item as being at another frame rate, or to conform a footage item to a frame rate, you have to use the Interpret Footage dialog box.
For more information, see "Frame rate".

Similar Messages

How can I edit multiple clips with different frame rates on the same timeline

how can I edit multiple clips with different frame rates on the same timeline

You do not want to edit material from different frame rates on one timeline. You CAN do this, but it is a very bad idea - and this is why.
Once you establish the sequence frame rate - lets say it is PAL material at 25fps, any material that you drop into the sequence other than 25 fps will have to be changed to play at 25 fps. If the material you add is NTSC (29.97), FCP will DROP 5 frames per sec to bring the frame rate down to 25 fps. Which 5 get thrown away? Every 6th one. This yields a funky cadence that becomes even more complex as as there are also interlaced fields (DV/NTSC is an interlaced format). Oh, and by the way, the image sizes are different as well. DV/PAL has 576 lines of resolution and DV/NTSC has 480. FCP has to scale up the NTSC to fit the PAL frame.
You do not want FCP adjusting these things on the fly. You want to do a thoughtful (and time consuming) conversion so that you end up with all your material in one format with the best possible image from the conversion process. Compressor can do an adequate job with Frame Controls turned on. The Natress Standards Conversion FCP plugin is another way to go. A third option is to find a post house that can do the conversion for you using a hardware based process.
The good news is, once everything is in the same format, editing it will be painless and the output process very quick.
Whatever frame rate/ image size you select, I'd suggest using ProRes for the codec. It is 4:2:2 color and will withstand color correction and composting with much more grace than any variant of DV based codecs.
Have fun.
x

Relink project clips with different frame rate

Somehow the clips in my project sequence ended up with a different frame rate (25) than the original media files (23.95), and they are no longer linked -- maybe this happened during import from iMovie. When I try to relink project files to source media, I get an error message saying they cannot be relinked because they have a different frame rate. I changed the sequence framerate to 23.95 (by creating a new project with 23.95 as the frame rate, then copying and pasting the other timeline into it), but all the clips remain at 25, so the problem remains.
How can I change the clip properties to frame rate 23.95 so I can link to the original media?
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The media got unlinked importing the project and events from iMovie to Final Cut.
I've attached screen shots with all the specs.

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A few of them I may have the original source files on disk. Do you know what's the easiest way to transpose them to the higher frame rate?
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I noticed that my iPhone shoots video clips with different frame rate from time to time. I suppose it slows frame rate on dark shots. For now all of my daylight shots are 30 fps, while night or dark ones are 25 and 24. This makes it hard to edit clips in iMovie for example, because difference in frame rate causes strobe motion effect on output.
!http://pics.livejournal.com/brain_away/pic/000040rc!
!http://pics.livejournal.com/brain_away/pic/00003s3c!
Anybody have the same?
For reliable results I would suggest to shoot two clips: one in sunny daylight conditions, another with ordinary room lightning, maybe a little darker than normal.
Please let me know of the results. Thanks

Doesn't seem to be just a Quicktime bug:
!http://pics.livejournal.com/brain_away/pic/00005gw1!
+Created on: 12.09.2010 22:42:50 Московское летнее время
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Play Time.........................................10s 193ms
Total File Size...................................12.9 MiB
Total Stream BitRate..............................10.6 Mbps
Encoded with......................................4.1
Encoding Library..................................Apple QuickTime
Video Stream #1
Codec (Human Name)................................AVC
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Codec [email protected]
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Display Aspect Ratio..............................16:9
Scan Type.........................................Progressive
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Codec Settings (Summary)..........................1 Ref Frames
QF (like Gordian Knot)............................0.465
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Codec Settings (Reference Frames).................1
Video Stream Length...............................10s 163ms
Video Stream BitRate..............................10.6 Mbps
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Video Stream Size.................................12.8 MiB (99%)
Video Stream Title................................Core Media Video
Date of Original Encoding.........................UTC 2010-09-12 04:13:59
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Codec.............................................AAC
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Audio Stream Length...............................10s 193ms
Audio Stream BitRate..............................64.0 Kbps
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Sampling Rate.....................................44.1 KHz
Audio Stream Size.................................79.4 KiB (1%)
Audio Stream Title................................Core Media Audio
Date of Original Encoding.........................UTC 2010-09-12 04:13:59+
+Created on: 12.09.2010 22:43:06 Московское летнее время
Report for file: IMG_0194.MOV
General / Container Stream #1
Total Video Streams for this File.................1
Total Audio Streams for this File.................1
Video Codecs Used.................................AVC
Audio Codecs Used.................................AAC LC-PS
File Format.......................................MPEG-4
Play Time.........................................16s 579ms
Total File Size...................................21.0 MiB
Total Stream BitRate..............................10.6 Mbps
Encoded with......................................4.1
Encoding Library..................................Apple QuickTime
Video Stream #1
Codec (Human Name)................................AVC
Codec (FourCC)....................................avc1
Codec [email protected]
Frame Width.......................................1 280 pixels
Frame Height......................................720 pixels
Frame Rate........................................29.970 fps
Total Frames......................................496
Display Aspect Ratio..............................16:9
Scan Type.........................................Progressive
Color Space.......................................YUV
Codec Settings (Summary)..........................1 Ref Frames
QF (like Gordian Knot)............................0.383
Codec Settings (CABAC)............................No
Codec Settings (Reference Frames).................1
Video Stream Length...............................16s 550ms
Video Stream BitRate..............................10.6 Mbps
Video Stream BitRate Mode.........................VBR
Bit Depth.........................................8 bits
Video Stream Size.................................20.9 MiB (99%)
Video Stream Title................................Core Media Video
Date of Original Encoding.........................UTC 2010-09-12 02:45:06
Color Primaries...................................BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer Characteristics..........................BT.709-5, BT.1361
Matrix Coefficients...............................BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177
Audio Stream #1
Codec.............................................AAC
Codec (FourCC)....................................40
Audio Stream Length...............................16s 579ms
Audio Stream BitRate..............................64.0 Kbps
Audio Stream BitRate Mode.........................CBR
Number of Audio Channels..........................2
Audio Channel's Positions.........................Front: L R
Sampling Rate.....................................44.1 KHz
Audio Stream Size.................................129 KiB (1%)
Audio Stream Title................................Core Media Audio
Date of Original Encoding.........................UTC 2010-09-12 02:45:06+

Help with sequence settings in final cut for project with 2 different frame rates.

I really need help with this one! I finished editing a wedding video and realized after exporting that it was filmed in two different frame rates. This has happened before but I converted the footage to match and fixed the problem. In this case, the footage is part 30fps and part 60fps. The majority of it was filmed in 30fps. I cannot convert the 60 to 30 without the slow motion effect which I do not need so I have to find a way to burn this to a DVD without it looking messed up! The video was shot with two Canon 7ds if that helps anything. The first sequence I set at 29.97 and exported as a quicktime movie and all the footage filmed in 60 looked perfect and the footage in 30 looked jittery. Then I tried the sequence at 59.97 and it switched. The footage filmed at 30 looked good and the 60 was cropped in. I am so confused! Any advice or suggestions would be greatly appreciated!!

Thanks for your help Michael! The frame rates are 29.97 1920 x 1080 and 59.94 1280 x 720. I did a control click on the clips in final cut and viewed the item properties/format to find this info. The Canon 7d is a DSLR but we use it for video. As for my workflow, the first thing I do is import the footage onto my computer and then drag the clips into mpeg streamclip. I choose apple prores 422 and uncheck the interlaced box. Once this is done I import the .mov files into final cut. The sequence automatically sets itself to whatever clip I drag in first so it originally set as 29.97. When I finished editing wedding video, I export it to a quicktime movie and choose whatever settings match the sequence, in this case apple prores 422 1920 x 1080 30p. Once that is done I use iDVD to burn the discs.
I knew something was wrong when I watched the quicktime movie and all the 30fps footage was jittery and most of the cross dissolves looked strange. That's when I figured out the footage was at two different frame rates. What I don't understand is why whatever the sequence is set at in final cut, the clips of the opposite frame rate look right but the clips set at the matching frame rate don't???

Working with multiple frame rates

Hi- I unfortunately am dealing with a project where I'm dealing with potentially 3 different frame rates. I have some shot at 29.97ndf, some HDV captured using 1080i60 and some P2s converted for FCP and are at 23.98.
I understand that FCP 6 can handle different frame rates in the same timeline, so... are all these different rates something I need to be concerned with? I'll need to cut these together into a single montage and my end product will be a DVD.
Thanks for your help.
Robert

Thank you guys. Any specific ProRes? (there are so many of them). So... does this mean when I render it at 29.97 for NTSC all the 23.98 footage is going to get speed up like chipmunks?
Thanks again.
Robert

"Cannot play video with this frame rate&qu

For reasons that aren't important here I cannot use the Zen video converting software. Instead, I've been using the trial version of the Caniusoft Video to Creative Zen converter. Only once has a video played, but as soon as I closed the video and opened it up again this message appeared. "Cannot play video with this frame rate." Daniusoft offers frame rates from 5 fps to 30. I've tried all of them and none of them work. Has this been a problem for others? Perhaps I need a different converter?
ps.
..i'm converting flash video to avi. Does that make a difference?

I can't answer your question in full (maybe somebody else can). However, I am aware that both the Zen and the Zen X-Fi can only play video files up to 320x240 resolution. Previous players like the Vision M were able to scale files down to this resolution on the fly, but not these two newer players.

Two timecode stripes at different frame rates? (and other BITC stuff)

I'm not an FCP user, but I'm working with an editor who's not that up on the finer points of FCP operation. Would like to know if certain things are possible...
1a. Is it possible for FCP to simultaneously output a QT file with two different BITC stripes running at different frame rates (say, 29.97 fps and 23.976fps)? Or...
1b. For an already BITC'd work print (striped with 23.976 timecode) is it possible to add a second stripe at 29.97 fps, synchronized from the 1-hour mark (first frame of picture)?
2. Are there any parameters available in FCP to adjust the size of the numbers and the position of a timecode stripe?
3. BONUS QUESTION: what does the "R" in "TCR" mean? (just curious -- I've seen this for years but never knew what the "R" stood for).
Message was edited by: iSchwartz

iSchwarz!
Welcome to the visual side of things. Never thought I'd see you venture out of Soundtrack Pro and Logic land, glad to see you here.
3. R stand for Reader. TimeCodeReader. G will stand for Generator. TimeCodeGenerator
2. You mean adjust the TCR window? If you drop the filter on a clip, load that clip into the viewer, you can adjust the filter parameters there.
1b. BITC? There are 2 type of timecode that I'm aware of: VTC (or ViTC)(Vertical Interval Timecode) and LTC (Longitudinal Timecode). I seriously doubt this as then FCP would have to use to different timebases within the same sequence.
1a. Again, I seriously doubt this do to the different timebases.
You could print to tape this 23.976 fps sequence which FCP would add the pulldown resulting in 29.97 fps timecode and then import that. Or, maybe Compressor can add the pulldown and export a file wtih 29.97 fps timecode. Don't know, never needed to try that.
Good luck, report back with your findings.
Zeb

Re-connecting media to different frame rate clip

Hi guys,
Wondering whether anyone can help me out to solve an error I've made...
So, I've basically completed an edit (some episodes on Final Cut Pro X, some on Final Cut 7) only to find out that I'd transcoded the media at the incorrect frame rate, 23.98 instead of 25fps. Yup, pretty big error. And now I need to redeliver the projects in the 25fps format.
I've transcoded a clip to the correct 25fps rate and tried to reconnect that clip to the 23.98fps one in the timeline, but I'm unable to reconnect as the clips are of differing frame rates.
Has anyone got any ideas how I can reconnect the clips or any suggestions that will make this situation easier to rectify rather than copying out the entire edit which will cause me to spend a week crying into my keyboard.
Thanks in advance for any suggestions.
Olly

Hmmm...
Tried this but it brings in the media that is 23.98 and there's no way I can tell to link to the new 25fps clips. Unless there's anything else I can do? Any other way to match the clips? (the 25fps clips are that little bit longer in duration) I also have some edits in fcp7. By using cinema tools in that would I be able to change the frame rates and link up to the new 25fps?
Cheers for the advice though Russ, this way does give me the template of the 23.98 edit so that I can match the new 25fps shots to, but it's gonna be a long process.

Cannot create slideshow with high frame rate

I have just bought QuickTime Pro version 7. I am using Windnows XP SP2 on a Pentium D machine.
I am trying to create a movie with still images I captured from my digital camera. I created a 10 seconds slideshow and set the frame rate to 30 frames per second. I then saved the file as a Quicktime movie. When I played the movie with my QuickTime Player, I could see actions for the first two seconds only. After that, the picture didn't change eventhough the progression bar was moving. Once the movie reached the end, the player then changed the frame to show the last picture of my slideshow.
In short, only the first 60 images are shown in the first 2 seconds. Then the slideshow was stuck with the 60th image, until it changed to the 300th image at the very end.
Does anybody has the same experience? Did I do anything wrong?

One more thing. If I set the frame rate to be less than 10 frames per second, it works fine. It just won't work with high frame rate.

Why do I get "Publish Failed" when I select F4V with fixed frame rate?

I have created several projects from scratch in Captivate 5. My publishing functionality seems to be increasingly impaired. I have rebooted and uninstalled + reinstalled Captivate 5.
In the beginning I got this message when I was publishing a specific project with the media option F4V with fixed frame rate, but now I am getting it on all my projects regardless of my publishing selections.
I am running on Windows 7, and I think it is Windows that is suggesting that I 'debug' the program. Clicking 'Debug' takes me to a dialog box where I can choose between Visual Studio 2005 or Visual Studio 2008, none of which seem to be a good solution.
Here is a print of my publishing options:

Chinmay Baid,
Thank you for your reply - over the past few days I have been able to
narrow the problem down a little more.
When working with Captivate 5, I am able to work with and open any
published file until I turn that file into a Zip file. Upon unZipping,
the file becomes unusable by my computer and by my LMS (Cornerstone).
I am using Adobe Flash Professional CS5 and I am able to run any SWF file
on my machine if the file has never been zipped. I am using Captivate 5
in administrator mode. Somehow, the zip process is making the files
unusable, and my LMS requires that files be zipped before they can be
uploaded.
Thank you for any advice or help you may be able to offer.
Daniel Spray
Instructional Design Specialist
United Spermarkets, LLC
806.791.6329
From:   Chinmay Baid <[email protected]>
To:     Daniel Spray <[email protected]>
Date:   03/03/2011 05:09 AM
Subject:        Why do I get "Publish
Failed" when I select F4V with fixed frame rate?
Hi,
Can you please give the following details :
Can you please check and tell the Flash player version
(plugin,activex,standalone) installed on your machine?
Also, are you able to play the standalone SWF on your machine?
Did you launch Adobe Captivate 5 in administrator mode?
Above information might be helpful for further investigation.
Regards
Chinmay Baid
http://blogs.adobe.com/captivate

Is there a way to sync two clips with different bit rates?

I have two clips from different camcorders of the same frame rate but slightly different frame rates. When trying to sync the 2 clips, it's nearly impossible because the frames aren't lining up. Is there anything I can do?
Where I'm trying to sync the two clips is kind of between frames.
Thanks,
Bob

Hi
I only know of miniDV tape Cameras and SD-Video quality - and I use an external program to do this.
JES_Deinterlacer (free on internet) - Mainly I use it to go from PAL (25fps) to NTSC (29.97fps).
It does this so much better that just dropping into TimeLine in FCE/P or switch when going from iMovie/FCE/P to iDVD. They both does a sort of conversion - but the result has to me been very choppy/jumpy and not enjoyable at all.
There are even better conversions - But those are Pro applications and costs are astronomical - and the end result is not that much better at all.
Yours Bengt W

Parallel acquire 2 signals with different sampling rate on 2 cards

Hi NI,
I have cDAQ-9178 and NI 9221, where sample rate is 10kHz and NI 9219, where I need sample rate about 10Hz, it's possible this confiruration for parallel acquire?
Thank you.
Neolker

Hi Neolker,
Do the tasks need to be synchronized or are totally independent tasks?
If the tasks are independent, than you basically have to create two different tasks, even in two different loops that will run with different sampling rate.
You can have them in the same loop the reading if you assure that the data are transfered in chunks to application memory according to tha sampling rate (Ex. for 10kS/s rate you can transfer data with 1kS chunks and for 10S/s rate with 1S chunk).
If you want to synchronize them, you will need a counter that will divde the sample clock from 9221 and route it to 9219.
Let me know if you need more help.
Best regards,
IR

High Latency with low frame rate

I'm getting 30 seconds of latency (between source video and
FME input window) when frame rate is set to 1.00 fps. With higher
frame rates, latency is very low.
Odd behavior: when switching from, say, 29.97 to 1.00 fps, I
see every frame (no frames are dropped), but they paint at only 1
per second (which means a large buffer is building somewhere).
After several seconds, the behavior switches to the expected 1 fps
(with all intervening frames dropped), but the whole thing is
delayed by roughly 30 seconds.
build: FME 2.5.0.2086
format: H.264 or VP6 (happens with both)
size: 352 x 240
bit rate: 200 Kbps
keyframe freq: 1 sec
Am I doing something wrong?

My encoding machine is a Gateway Pentium 4, 2 GHz with 1
GByte RAM, Windows XP Service Pack 2.
Video capture is done with a Pinnacle 510-USB peripheral,
Pinnacle driver 4.0.46.0.
Here's how I observe the problem: my input video is a color
bar pattern with burned-in time code. When I switch frame rates
from 29.97 fps to 1 fps, I see each and every frame appear in the
Media Encoder monitor window (as verified by looking at the
burned-in frame counter). However, only one 1 frame per second is
rendered. For example, I first see 01:00:00:01, then 1 second later
I see 01:00:00:02, then 1 second after that: 01:00:00:03, etc.
After several seconds, I then begin to see the burned-in time
code jumping in 1 second counts -- the expected behavior:
01:00:20:13, next second: 01:00:21:13, next second: 01:00:22:13,
etc.
The problem occurs when switching from any rate lower than my
source video rate of 29.97 fps, it's just that it's easier to
describe what happens at the lower 1 fps rate.

Understanding compositions with different frame rate

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