Change h.264 frame rate

Hey, my 2nd question of the day.
Got some brand new HD MOVs that are 1920 x 1080, 23.98, h.264 compressor. They seem to play fine in Final Cut. I have other clips that are 1280 x 720, 59.94, h.264 compressor. These 720 clips were shot in slow motion but are not playing in slow motion in Final Cut. I tried to use DVCPro HD Frame Rate Converter but obviously didn't work. Any other way I can convert the 59 frame rate to play in slow motion?

Use Cinema Tools and CONFORM. But, get out of the H.264 codec first. H.264 is not an editing codec.
Shane

Similar Messages

How to change Flex Application frame rate at runtime

hello,
i have Flex application that need to change the Frame Rate at
runtime.
when i am changing it by using the slider component, here the
code:
private function onChangeSlider(e:Event):void
frameRate = sliderFR.value;
trace(frameRate);
<mx:HSlider id="sliderFR" x="452" y="765" width="378.2"
minimum="1" maximum="50" liveDragging="true" snapInterval="1"
value="25" change="onChangeSlider(event)"/>
the value is changed, but the frame rate is not changed.
when i insert the binding to the <Application> tag i
got error on this one, because i can't bind there items for the
application level.
how can i change the Flex frame rate at runtime?

i found the solution!
in Flex application you have frameRate properties that
doesn't work at runtime in the ActionScript code.
if you have a video that you want to change the speed of it,
you need to change the stage.frameRate (of all the Player itself).
and there is a catch here. if you will try to change it right after
the application will start (like in: creationComplete event) you
will have a runtime error.
what you need to do is, change the stage.frameRate value
after the all application is started from a button or other event
in the system.
this is working grate for fast/slow FLV playing
enjoy!

How do I change the export frame rate?

How do I change the export frame rate?

my video came out super twitchy when i exported it and was told i need to change to export frame rate.
here is an 8 sec clip of what i am talking about.
http://www.youtube.com/watch?v=cuQ5VduBUK
where is quick time conversion
sorry im kind of a noob
still trying to figure everything out

How do I output the smoothest video when changing or mixing frame rates from the original footage?

I have been experimenting with various Media Encoder settings, and wondered if there was anything else I can try to get the smoothest video output possible, especially when changing frame rate and possibly resolution. For clarification, let me start from the beginning and explain what I'm doing and what I've tried so far. I'll try to be as brief as possible, but if I do go into too much detail, I apologize.
My original footage is AVCHD 1080p - 60fps. (my camera only does 60fps...specifically 59.94fps) We're not talking interlaced video here, I'm staying away from that. This is definitely full frame, progressive video at 60 frames (not fields) per second. My output will ultimately be for the web. I have been keeping my output codec (H.264) and bit-rate (VBR 2-pass, relatively high-bitrate) consistent, and have been trying numerous output options and even sequence settings to see what would yield the best results. I am using Premiere Pro CS5.5 along with Media Encoder. Here's what I've done and the results I've observed:
1. I created a sequence with 1080p - 59.94fps settings to match my original footage. I then output both 1080p and 720p versions at 59.94fps, and at 29.97fps. The 59.94fps output files looked absolutely great, as would be expected. Extremely smooth. The 29.97fps output files were generally smooth, but not near as smooth as the 59.94fps. This is expected since it's half the frame rate as my original footage. However, my question is this: What exactly is Media Encoder doing when "down converting" from 60p to 30p? From a technical stand point, is it dropping every other frame? I'm just curious to understand exactly what it does. I tried the Frame Blending option as well, and that only yielded a bit more blur to the images which wasn't desirable for any of the output files.
2. Just to see what would happen, I created a sequence with 1080p - 29.97 settings. I then output both 1080p and 720p versions at 29.97fps. The video was much more choppy in these cases, even with Frame Blending on. Now, I know not matching my sequence settings with my original media isn't ideal, but I again just want to understand why this yields less smooth video than the 29.97fps options above. Why does cutting the sequence settings frame rate in half from the original, then outputting the same frame rate as the sequence yield video that is not as smooth?
3. Next, I wanted to try mixing frame rates to see how Premiere and Media Encoder handled the footage and output files. Premiere handled it great, no issues there. However, I had some interesting things happen when I output the files. Here's what I did: I created a sequence with 1080p - 59.94fps to match my original footage. Then I took the same exact footage that was in my sequence, copied it in my project panel and interpreted it at both 23.976 and 29.97 fps, yielding slow motion video. The slow motion video looked great in Premiere, so I went ahead and just added it to my sequences, along with the original 59.94 footage. I also created separate sequences for the 29.97 and 23.976 footage respectively, each with matching sequence settings, then added a nested sequence to another original footage sequence (with 59.94fps sequence settings) to see which yielded the best results. Basically, I'm trying to output 59.94fps that match my original footage, but also throw in some slow motion footage at different framerates. I'll explain my results in a moment as they are a bit convoluted, however, here is my question: When mixing frame rates and trying to output the smoothest video, am I going about this the right way? I would assume you would use your sequence settings that match the original footage (which is what the majority of the footage will be), then bring in a nested sequence for the slow motion (as oppose to just dropping the slow motion video directly into my main sequence), and then output to the same frame rate of the majority of the footage, in this case 59.94fps. Is there a better workflow for this?
The results to #3 above were as follows. Initially, it looked like it didn't matter if I nested the slow motion sequence into my main sequence, or simply dropped the actual slow motion video into my original 59.94fps sequence. It seemed to produce smooth results either way. Frame Blending blurred the video a bit, but didn't seem to make much difference, and quite honestly I like the footage without Frame Blending in general. However, when I closed down Premiere, and opened the output files later (opening in Quicktime), the footage looked choppy. In fact, it would go from choppy to smooth and back, almost like it had an irregular cadence (don't know if I'm using "cadence" in the right context here). I would then open up Premiere again, import the output footage into my project panel, and play the footage in Premiere, and it would play back smooth again. Is this a Quicktime issue? I was playing 1080p 59.94fps files when this happened, so maybe it's just because it's a large file. Doesn't seem to have issues with the 720p files I created. But it sure threw me off with my testing because I then started second guessing the settings I was using. My iMac is the latest 2011 model with plenty of RAM, so I wouldn't think it's the computer. Thoughts?
4. Next, I noticed on ALL my output files (again, using the H.264 codec from Media Encoder) that the color of my video seemed to flatten quite a bit. It seems that the original footage has more contrast and saturation than the output files. I figured maybe this was just how it was, but when I re-imported the output files back into Premiere, they looked IDENTICAL to the original footage. And in Media Encoder's Source/Output windows, I don't see any difference there either. Is Quicktime again the culprit here, doing some odd things to the color of my videos?
5. Regarding Frame Blending, when is the best situation to enable this option in Media Encoder? I've read it is when mixing frame rates, but I honestly didn't see too much of a change except for a bit more blur, which I didn't care for.
6. Lastly, my conclusion is that 60fps yields the smoothest video, which is an obvious conclusion. However, I know that 60fps isn't the best or easiet frame rate for web delivery. It seems 30p is more the standard. Are there any integrated web players that would play 60fps? Can you get 60fps video on YouTube/Vimeo? If yes to any of these questions, can they do 720p and 1080p at 60fps?
Those are all my questions. I hope I am clear enough without being overly wordy and hopefully I didn't put too many questions into one post. Thanks in advance for any insight, I really appreciate it.

Did you ever figure out which output worked the best? I have the same original footage; trying to determine the best output settings to make a dvd for tv.
thanks!

How to change the maximum frame rate of the camera by changing the image size?

I have two acA2040-180km cameras which are connected to 2 NI PCIe-1433 framegrabbers, I am monitoring my cameras by LabView, maximum allowable frame rate is about 187 for full resolution images, but I just need a small fraction of the images, I know if I make the images smaller, FPS will get higher, but it isn't possible by changing the image size in NI MAX, I've also tried to change the size by defining the region of interest in the grab setup.vi, but it would be after going to camera so it isn't the case as well, so I need a VI to go to the camera before starting to take photo and define the region of interest which is going to be captured, would you please help me to find it?
Please help me, this problem get me stuck!!!

Have you tried changing the image size using property nodes as Bruce suggested? Do remember with Basler cameras, reducing the width only will not affect the transfer speed but the reducing the height will. Have a look at the frame calculator to understand what you frame rates you can acheive with certain settings:
Basler Frame Rate Calculator
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies

Most efficient way of changing still image frame rates?

I'm using Premiere CS5.5 and have been having issues with the audio/video going out of sync when I upload my video to Vimeo (it's not out of sync prior to uploading it...it only happens after they transcode it). The Vimeo support staff says the problem is that I'm using a variable frame rate, but since there isn't any option (to my knowledge) to choose a constant or variable framerate in Premiere/Adobe Media Encoder, I think I have identified the problem. The primary footage that I shot with is 23.976 fps and that is what my sequence settings and output settings have been, but I also have a lot of still images that I'm using for b-roll, which I finally noticed are 29.97 fps. I changed the Intermediate Media Timebase setting to 23.976 fps in the preferences, but my question now is if there is an efficient way to change the frame rate of all those still images without having to re-import them and re-apply all the various motion effects/key framing that I've already spent a lot of time on?
Any help would be much appreciated. Thanks.

Yeah, I downloaded MediaInfo to explore some of the various versions that I've rendered in my effort to get something that works correctly on Vimeo, and depending on the encoder I saw some of what Ann posted, but I also looked at one on MediaInfo that I had rendered through Adobe Media Encoder and it had a Constant frame rate mode of 23.976, yet I remember watching that one on Vimeo at the time and it was still out of sync--Mediainfo says that version has a variable audio bit rate though, but to my knowledge there isn't an option in AME to choose a constant audio bit rate.
I agree that it's an issue on Vimeo's side, but the chances of them getting their **** together in a timely fashion seem low. The frustrating thing is that I can watch documentary style videos on Vimeo that I know were edited and compressed through Premiere/AME, yet they don't have any audio sync issues. The difference that I noticed between one of those videos and mine is the use of still images in my video. As you can see from an image I uploaded earlier, the default frame rate for still images when I imported them was 29.97 until I changed it yesterday, but it didn't update the images I had already imported. So I'm wondering if there is a way to change the frame rate of those still images without having to re-import the images and make all my edits/key framing all over again.

Frame snapping on composition frame rate change.

Hello
Just had a thought today for a feature request....
It would be nice if when you brought up comp settings to have a switch to snap keyframes to the nearest whole frame when changing the comp frame rate i.e. from 30fps to 25fps.
Also curious to know if the missing frame for sequences nag is ever going to be fixed in CS6?

It would be the same one mentioned here. Can't remember if it happens in CC, think it was fixed.
http://forums.adobe.com/message/4568071
Edit, after reading that thread a little further it was fixed in CC but not CS6.

What project settings should I choose in PE8 for frame rate of 29.97 if camera source unknown?

Hi, I would like to know what project settings to choose in premiere elements 8 for a frame rate of 29.97, pixel aspect ratio of 1.3333 and 1440x1080? Should I choose HDV, AVCHD or hard disk? I didn't record the footage, so I'm not sure what it was recorded on.

I am definately selecting NTSC - HDV, HDV, 1080I30. I then import the video. It shows in the project media - properties as 29.97 frame rate and in the interpret footage it also shows as 29.97. But when it finishes indexing and starts to conform the video is changes to 25 frame rate.
Please see images below. When importing the video it is at a frame rate of 29.97 until the indexing has finished, then it changes to 25 before conforming video
IMAGE 1. Project settings
IMAGE 2. Indexing image. frame rate at 29.97fps
IMAGE 3. Properties while indexing video - 29.97 fps
IMAGE 4. Interpret footage - still while indexing at 29.97fps
IMAGE 5. Finished indexing changes to 25 fps and starts to conform video?

Background frame rate

Is there any way to change the default frame rate when the app goes in background? The default rate drops to smth like 4fps or even less when the app is in background and I need to change that to a higher number because the app takes forever to switch tracks (this is an audio streaming app). If the app has the focus, the track switching is immediate but when the frame rate drops it takes up to one minute. Any suggestions would be greatly appreciated.
Just for fyi, I understand the reasons why the frame rate is lowered. There are good articles out there that explain the reasons and best coding practices to ensure that the app does not waste device battery. In my case, I just need to be able to throttle the frame rate up when switching tracks and then back down. I can 't seem to find a way to do it. Maybe it's not possible...that is why I am reaching out to folks in this forum.

Chris,
Sorry for the late reply. I took some time to test a little more...
Tip#2 does not seem to make any difference. The stage always reports the same frame rate of 24.
private function onThrottleEvent(e:ThrottleEvent):void
trace("targetFrameRate is " + e.targetFrameRate);
trace("throtle state is " + e.state);
if (stage != null)
trace("stage Frame rate is" + stage.frameRate);
results:
targetFrameRate is 4
throtle state is throttle
stage Frame rate is 24
To further test, I set logging to true to get a better understanding of what the OSMF was doing since I use the framework in the Android version.
-locale en_US -define CONFIG::FLASH_14_0 true -define CONFIG::MOCK false -define CONFIG::PLATFORM true -define CONFIG::LOGGING true -swf-version=27
I can email the logs to you privately if you want them. On Android devices, logging shows that when the app is pushed in the background, the OSMF does not move beyond the wait state. Smth inside of the OSMF behaves differently when the app is in the background mode. Let me summarize the behavior quickly one more time.
1. App is in foreground: App switches to the next track immediately.
2. App is in foreground and screen is locked: App switches to the next track. There is a few seconds delay, but it still moves to the next track.
3. App in the background with screen locked or unlocked: App does not switch to the next track. OSMF gets stuck in wait state of Seg 1 Fragment 3.
Here are the last two lines before the app gets stuck.
Mon Apr 13 2015 05:38:49 PM.607 [DEBUG] [org.osmf.net.httpstreaming.HTTPNetStream] Processed 66901 bytes ( buffer = 11.981, bufferTime = 4, wasBufferEmptied = false )
Mon Apr 13 2015 05:38:49 PM.608 [DEBUG] [org.osmf.net.httpstreaming.HTTPNetStream] State = wait
The app will stay in this state until I bring the app to the foreground.
Here are the logs when app comes to the foreground.
targetFrameRate is 24
throtle state is resume
stage Frame rate is 24
targetFrameRate is 4
throtle state is throttle
stage Frame rate is 24
targetFrameRate is 24
throtle state is resume
stage Frame rate is 24
Mon Apr 13 2015 05:40:07 PM.386 [DEBUG] [org.osmf.net.httpstreaming.HTTPNetStream] Seek complete and time updated to: 0.039. Dispatching HTTPNetStatusEvent.NET_STATUS - Seek.Notify
Mon Apr 13 2015 05:40:07 PM.387 [DEBUG] [org.osmf.net.httpstreaming.HTTPNetStream] NetStatus event:NetStream.Seek.Notify
Mon Apr 13 2015 05:40:07 PM.388 [INFO] [org.osmf.net.NetStreamLoadTrait] NetStream.Seek.Notify
Mon Apr 13 2015 05:40:15 PM.107 [DEBUG] [org.osmf.net.httpstreaming.HTTPNetStream] State = play
On iOS devices, the app behaves the same as far as the frame rate goes but the streaming stops immediately when the app is pushed to the background or the screen is locked. I don't use the OSMF in iOS app but I use the Netstream class in combination with StageVideo to be able to consume HLS streams. Here are some traces.
(pushed to the background)
app status is ....deactivate
stage video is available
NetStream.Play.Stop
targetFrameRate is 4
(brought to the foreground)
throttle state is throttle
stage Frame rate is 24
targetFrameRate is 24
throttle state is resume
stage Frame rate is 24
When the app dispatches the Deactivate event, it also forces the Netstream to stop streaming. The documentation that I have read says that when the app enters background, video stops rendering but in this case I am streaming audio only so I don't see the reason why NetStream.Play.Stop is dispatched on deactivate. In app.xml, I have also the correct setting to be able to play background audio.
<key>UIBackgroundModes</key>
<array>
<string>audio</string>
</array>
Any thoughts? The app is available in both Android and Apple stores so you can easily download and test the behavior yourself.

PrE 9.0 wont let me share as H.264 1280x720p 29.97 fps - keeps changing frame rate

As the title says I am unable to create an export with the following settings:
H.264
1280x720p
29.97 (or 30, neither possible) fps
I have tried editing the existing H.264 presets but the following happens:
I go into Share > Computer > MPEG and select the Preset "H.264 1440x1080i 30" then hit the "Advanced" button.
All I want is to change the resolution to match my project size, 1280x720 which I do - but then something happens
As soon as I change "Frame Dimensions (pixels)" to 1280x720, the fps is automatically changed to 59.94 and when I click the dropdown box for the frame rate, I can only pick the following:
23.976
24
59.94
Automatic (based on source)
Since I can't pick 30 or 29.97 I tried picking Automatic but that sets it to 23.976 - even though it clearly states that my source is at 29.97 fps...
At this point I don't really know what else to try and any help is appreciated.
Thanks
EDIT: Just thought I'd also mention that the source is from a GoPro Hero HD cam which shoots in 1280x720 H.264 AVC so I did select "NTSC AVCHD LITE 720p30" as the project profile
EDIT2: Found Bill Hunt's premade profiles for the GoPro and Premiere Pro. Trying them out right now and it seems to be working. But I still cannot create a profile with 29.97 fps at 1280x720 myself

With certain file formats and codecs, you will be limited in the configuration of size or frame rate. It sounds like the output format you've selected is one of them.
Try going to Share/Computer/MOV and see if that makes a difference.

How can I change the frame rate mode?

Adobe Premiere Pro exports my videos with a variable frame rate. Because of this long videos are asynchronous. How can i change the frame rate mode? So Adobe Premie Pro exports my videos with a CONSTANT frame rate? The original video has a constant frame rate...

Sorry my mistakes. I am from Germany.. so...I mean with asynchronous that the video file and the sound file are displaced. In the beginning of the Video it's normal, but if the videos is very long it goes VERY "asynchronous"
I analyzed the video with "mediainfo":
General
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42
File size                                : 2.00 GiB
Duration                                 : 20mn 13s
Overall bit rate mode                    : Variable
Overall bit rate                         : 14.2 Mbps
Encoded date                             : UTC 2013-12-11 13:56:13
Tagged date                              : UTC 2013-12-11 13:58:30
©TIM                                     : 00:00:00:00
©TSC                                     : 30
©TSZ                                     : 1
Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : [email protected]
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 3 frames
Format settings, GOP                     : M=3, N=30
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 20mn 13s
Source duration                          : 20mn 13s
Bit rate                                 : 14.0 Mbps
Width                                    : 2 560 pixels
Height                                   : 1 440 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 30.000 fps
Minimum frame rate                       : 30.000 fps
Maximum frame rate                       : 30.030 fps
Standard                                 : PAL
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.127
Stream size                              : 1.98 GiB (99%)
Source stream size                       : 1.98 GiB (99%)
Language                                 : English
Encoded date                             : UTC 2013-12-11 13:56:13
Tagged date                              : UTC 2013-12-11 13:56:13
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
mdhd_Duration                            : 1213733
Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 20mn 13s
Source duration                          : 20mn 13s
Bit rate mode                            : Variable
Bit rate                                 : 158 Kbps
Maximum bit rate                         : 254 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 44.1 KHz
Compression mode                         : Lossy
Stream size                              : 22.8 MiB (1%)
Source stream size                       : 22.8 MiB (1%)
Language                                 : English
Encoded date                             : UTC 2013-12-11 13:56:13
Tagged date                              : UTC 2013-12-11 13:56:13
mdhd_Duration                            : 1213777
And there i can read that the "frame rate mode" is variable... and that's the bad thing... I want to change that point to a constant frame rate mode. I use the H.264 codec

Variable Frame Rate on H.264 output

I am using AE CS6 (cloud version). I am trying to render compositions to 1080p mp4. Each time the comp appears to render fine. But bringing it into my NLE crashes my NLE. I brought the media into MediaInfo (app from SourceForge that shows everything about a media clip). It says that the Frame Rate is VARIABLE Min: 60fps; Max 60.6 fps. The composition was 80 fps, and I told the renderer to keep it at 80. MediaInfo also said the duration was over 6 seconds. The composition was a little over 4 seconds. So the overall speed of the comp was incorrect. I've been in the video business for about 10 years. I understand frame rates, etc. Never heard of VARIABLE frame rates until this.
I was able to launder the media file through a freeware media format converter, and got it back into constant frame rate so I could proceed in the NLE with the project. But the time was still 6 seconds. So I had to speed up the clip in the NLE to get it back correct.
Since moving to CS6 from CS4, I decided to start using the H.264 output module. So I've just started encountering this variable frame rate problem.
So my questions... What is variable frame rate, how did I 'request' it, why is even the variable frame rate no where near the comp frame rate, and what do I do to simply get an mp4 with the 80fps that I want?
This is very reproducible for me. My comps are usually either HDTV 1920x1080 or HDV 1440x1080.
Add to Render Queue
Select DV Settings, change field order to none
Select H.264 output module
Render
Can someone explain what's going on?
Thanks.
Jerry

Where did you get that footage and what format was it originally shot in? Was it shot in slow motion or did you change the frame rate in AE? Why would you need 80fps footage unless you're going to slow it down to a normal frame rate?
Also, h.264 is not only a very lossy format, it's also a bad intermediate format. So if you're planning on editting that footage later on in an NLE, I'd suggest rendering it to something else. Premiere should work fine with h.264, but not FCP, although I think they fixed it in FCPX, but you didn't say what NLE you're using.
Second of all, the H.264 encoder is much better in Adobe Media Encoder. Check this post by Andrew Yoole:
3.Andrew Yoole,
Jun 8, 2012 6:34 PM in reply to pkaracas
Report
As the other guys have said, don't use AE to render using temporal codecs. Temporal codecs like H264 rely on storing partial frames based on earlier information. AE renders and encodes one frame at a time, so most of the efficiency of a codec like H264 is lost. The result is that you get much lower overall quality from an AE h.264 render than if you were to encode it externally.
Adobe Media Encoder or Quicktime 7 will encode great quality H.264 files.
Was this helpful? Yes No
As I said I'm not sure why you would need to take an 80fps piece of footage back into an NLE, but if you're trying to make that footage play back in slow motion, you're going to have to re-interpret the frame rate of the footage in After Effects to play back at standard rate. And, if you're going to use the AE Render Queue to output something for more editing, I would suggest using best settings and outputting to a production codec such as a ProRes, Animation, Uncompressed 10bit, Uncompressed 8bit or Black Magic.
Also I've never used that media info app before, but I know that when you open up quicktime and hit command I on the mac to view the inspector, the playing fps jumps around. I think this happens because the player doesn't necessarily play back the correct frame rate at all times.
This Adobe Captivate blog talks about variable frame rates in F4V files. Maybe it might help explain things.
http://blogs.adobe.com/captivate/2010/11/f4v-or-f4v-fixed-frame-rate-what-should-i-go-with .html

Slow motion 50% export H.264 MOV (at half frame rate)

Hi,
I'm using a QuickTime MOV file (H.264, 1080p/59.94fps, 15 seconds) and have set slow motion to 50% (= 30 seconds).
Can anyone confirm that when I export this clip to 29.97fps I won't lose frames?
I have Compressor and think I found nearly all required settings except:
- Key frames - shall I use automatic or 24 or what? (How can I find out what the original key frame value was?)
- Frame reordering - shall I uncheck this option? (What does it mean? It's not in the manual.)
Many thanks!

If you want to make absolutely sure you won't lose frames, you should manually set a project to 29.97fps, import your 60/59.94fps and conform the video (Retime menu > Conform Speed [the retime menu is the 2nd one from the left over the effects browser area/under the inspector area]). FCPX will automatically frame for frame adjust the video to fit to the slower frame rate.
Key frames (video compression, not animation): a key frame is a complete image -- 100% pixels in use. Every frame between the key frames are only the parts of the image that change from the last frame (like Cel animation). Setting Automatic allows the software to make the best choices of when and where to create a complete frame. Otherwise, you can experiment with different values (up to All, which is pretty much no compression) to see what kinds of results you get and the overall quality (use very short pieces, like 5 -10 seconds.) High motion areas in video are always going to be the most challenging with respect to compression (particularly bitrate), so... it's worth figuring out what settings you like that will give the best results (and 5-10second clips don't take that long to render.) I generally use Automatic and adjust the bitrates to give the best overall results (which occasionally requires testing segments.)
Frame reordering: allows applications to "decompress" video frames in a different order than they are played, thereby allowing those apps that understand it a way to work faster. Larry Jordan suggests that this setting always be set for H.264 video (although I don't if I'm uploading to YouTube -- I try not to give YouTube any excuses for recompressing my video, so I try to have it already optimized before uploading... so far, it seems to be working.)

How do I set the frame rate to 12fps on my video, and it not change randomly?

Hi, I imported a video layer from file then set the frame rate to 12fps, when I play the video it keeps changing the frame rate to random times. How do I keep it at 12fps

Click the windows start button, then right click on computer, this will bring up a window that will tell you how much ram your system has.
Also Start>Accessories>System Tools>System Information will give you all the details you need to know.
As for Codec, That is an abreviation for code/decode it tells windows how to code when saving a video and how to decode when playing a video. Most formats are wrappers (avi, wmv, mov, rt) Each of these have a codec that you can choose from when saving a video, that codec then must be installed on the users computer to see that same video. Most formats come with a basic number of codecs and the creator of the video can purchase other codecs that provide better feature set.
What the codec really does is takes the video and compresses it like a zip file then the user when playing require that codec to uncompress it.
So each codec has its own strength and weaknesses. Some can compress more making a smaller file and perhaps inturn removes more data to get that compression and therefore has a poorer quailty video (just an example)
I am sure you heard of a few codecs if you think about it. mpg, mp2, mp3, mp4, h.264 and so on. Mp3 is the only one I listed here that is for audio only. Yep thats right even audio uses codecs.

How can I change to a higher frame rate than 12 FPS?

Just got a good deal on a 15 in MACBOOK Pro running Yosemite with the latest Quicktime and iMovie. Is the best frame rate I can get out of this HD camera 12fps? I can't find anywhere to change it in QT or in IMovie.
MacBook Pro with Retina display, OS X Yosemite (10.10.2)

studiojl wrote:...So as I understand it the camera will decide on FPS based off available light? ...
So you seem to correctly understand the information in the linked Use More Light! article.
studiojl wrote:... I don't like that at all...
Your emotion is irrelevant. It simply works the way Apple software is written. Perhaps some other computer system works different from Mac OS X and Apple camera apps?
If you intend to keep using Mac, you can take manual control of some camera parameters by using a third party add-on app such as iGlasses, Webcam Settings, or Sight Control.
studiojl wrote: ... what frame rate does it pick if I import one 30 FPS clip and one 60 FPS clip?
Whatever frame rate is set by the program of the software application you are using to record those clips.
You can determine that frame rate by making short test videos and watching it in QT Player.
The QT "Inspector" window will show you the frame rate for the clip.
Here's an example for a clip made in my low-light room:
Message was edited by: EZ Jim
Mac OSX 10.10.2

Change h.264 frame rate

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