The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [keyframes]

Keyframes are points in time at which parameters should have certain values. In keyframe animation, the animation or editing software will then blend between these values over time.

Filter by
Sorted by
Tagged with
0
votes
1answer
17 views

Increment a number, based on number of keyframes in After Effects?

I'm working on a video comparing old and new games, and I'm scrubbing through some footage frame by frame trying to count button inputs in DOOM over a period of time. I was wondering if there was a ...
1
vote
2answers
12 views

Adjusting sequence square frame size for large screen size

I am trying to make a square size video of 6:5 ratio for LED display screen. The size of the screen is 12feet x 10feet in pixels it's 13824x11520p. Do i need my frame size to be this big to make it ...
0
votes
2answers
28 views

Duplicating keyframes in After Effects

I've made a basic animation where an element quickly changes position multiple times, e.g: Top left corner Middle Top left corner Bottom right corner I'm trying to duplicate these keyframes a couple ...
0
votes
0answers
29 views

FFmpeg identify non-IDR frame (I frame) as keyframe

It's a mov file. We use FFmpeg/FFprobe to process this file. There is a frame which is shown 'keyframe' (flags=K) in this file, but we found this frame is a non-IDR frame (only is I frame) using 264 ...
0
votes
0answers
3 views

Keyframe-triggered audio effect delayed six seconds

In Adobe Premiere Pro 13.1, I have an audio track A2. It is a MP3. I set a keyframe at about 1:11 and 1:14 in this MP3. Between them, the volume goes from -∞ to 0 dB. The problem is that this effect ...
0
votes
1answer
17 views

AE Keyframe Control through checkboxes

I have a position animation with four keyframes, two for a intro, two for a outro. Also I have a Master where you have two checkboxes "Intro" and "Outro". The idea is to override the keyframe values ...
1
vote
1answer
27 views

Is there a tool that lets me cut video with frame precision?

I'm able to use Avidemux with enough ease and it's mostly enough for my video need. I can also choose codecs to recompress the video. Unfortunately, it doesn't let me cut video outside the scope of ...
0
votes
1answer
40 views

What happens if you uncheck key frame distance in Premiere Pro CS6

The default is 72 which is in frames I suppose. However what happens if I simply uncheck it? Does it work like AVC Intra where key frames doesnt exist and every pixel in every frame is processed like ...
1
vote
0answers
8 views

What's beneficial about temporal auto Bezier keyframes over continuous Bezier keyframes?

From what understand, a temporal auto Bezier keyframe automatically re-adjusts both of its direction handles whenever a neighboring keyframe is moved somehow and the influences of both of its incoming ...
1
vote
2answers
39 views

How to change the font and color on multiple keyframes at once | Adobe After Effects

Hey there I ran into a small problem creating a video, and I haven't used any video editing software before, so I am lost right now and I have no idea on how to solve my problem which problem goes ...
1
vote
0answers
120 views

FFmpeg: Cutting 3 seconds at the beginning of a video leaves 5 seconds blank

I have an MKV video, and want to cut the first 3 seconds. I tried with FFmpeg: ffmpeg -i /input.mkv -ss 00:00:3.0 -c copy -t 00:09:58.0 output.mkv But the result (when played in VLC) is that there ...
0
votes
1answer
25 views

Security video missing time and frames

Why does a DVR or CCTV system randomly drop time or frames? I am viewing footage that says it is 12fps but, it is scanning at 10fps. These files were exported as AVI. Thanks
0
votes
0answers
84 views

Upscale the key frames while decoding!

I would like to apply some kind of super-resolution (SR) to the keyframes in an H.264 video. The SR process should target the keyframes and upscale them by a factor of 2. For the past few days, I've ...
3
votes
3answers
82 views

Frame capture from videos: I-frame vs P-frames

I'm trying to capture various frames within a x264-encoded video files into png files (in python), and then compare the quality of them: cap = cv2.VideoCapture(filename); //get frame_number for ...
0
votes
1answer
30 views

Premiere Pro shifting keyframes during an insert edit

During an insert edit all clips (video and audio) shift right except the keyframes (track volume) themselves on the audio tracks. Similar if I select all and move, keyframes are not included. How can ...
0
votes
2answers
36 views

Applying identical keyframes to identical objects w/variation

I have the following animation, in which a ball goes from the flashlight to the end of the frame. However, how do I create multiple iterations of this animation, except with the ball following the ...
2
votes
1answer
54 views

What is algebraic effect of transforms in Adobe After Effects Keyframe Data file?

I want to write software which peforms a pan, zoom, rotate, and resample on a 3840x2160 input video, yielding a 960x540 output video. I have an keyframe data file, exported from Adobe After Effects, ...
0
votes
1answer
27 views

Video: What are I-frames and why do they affect the size of the video?

Videos usually are described by a set of parameters including: bit rate, frame rate, width & height. But I came to realize that there are more parameters including B-frames and I frames (or I ...
0
votes
1answer
779 views

concat files with ffmpeg and preserve exact frame timestamps

I'm doing this to add a keyframe at 00:00:14.0000 1. ffmpeg -i trailer.mp4 -to 13.92 -copyts -c copy first-bun.mp4 2. ffmpeg -ss 14 -i trailer.mp4 -to 15 -video_track_timescale 90000 -copyts bun.mp4 ...
4
votes
1answer
701 views

How do I make this object orbit around the center without making it turn

I have this atom that I want to animate in after effects (yes I know you have more than one electron in carbon, but that's not the point). I want this electron to orbit around the middle of the atom. ...
1
vote
0answers
264 views

FFMPEG dropping the first two frames of segments generated through seeking

I'm trying to script-cut a 24 fps video and it gets close to the right thing, except for two missing frames at the beginning of every segment I cut with seeking. I've found out that index-frames (...
1
vote
1answer
71 views

Stop motion animation and audio keyframes in AE

so I'm completely new to After Effects (normally work with premiere or stop motion animation) so if I've not given enough/or the right information, just let me know what you need to know. I have a ...
3
votes
1answer
715 views

Why are there two ways to keyframe-animate geometric transformations?

In DaVinci Resolve 14, there seem to be two ways to use keyframe animations with geometric transformations. One is on the Edit page, using the Inspector. Here it seems to be possible to smoothen out ...
1
vote
2answers
63 views

Custom formula for keyframe automation - Adobe Premiere Pro

Is it possible to enter custom math/scripting formulas for keyframe animation inside Premiere Pro?
2
votes
1answer
89 views

Dealing with dropped frames in background plate when doing keyframe animation in After Effects

I am working on a video which includes some dropped frames ever so often. When a frame dropped, it repeated the previous frame sometimes 2 or 3 times. I am overlaying many objects on this video, and ...
1
vote
1answer
1k views

Why does Adobe Premiere CC change my “Ease Out” keyframe interpolation to “Bezier”?

In Adobe Premiere CC, I keep trying to set my position keyframe's temporal interpolation to "Ease Out". After I set it, I recheck the context menus immediately, and it has reverted to "Bezier". Why ...
0
votes
1answer
836 views

How does the h.264 encoder determine where to put i-frames?

I'm reading a bit on I-frames and their counterparts, P-frames and B-frames. I understand the usage. I-frames are the key to the compression and following P and B-frames can use the data in I-frames ...
2
votes
1answer
4k views

How to identify i-frame from idr-frame in the ffprobe show frames output?

The ffprobe show frames output shows the following details: [FRAME] media_type=video key_frame=1 pkt_pts=42 pkt_pts_time=0:00:00.042000 pkt_dts=42 pkt_dts_time=0:00:00.042000 pkt_duration=N/A ...
1
vote
1answer
2k views

After Effects : shortcut for next keyframe on current layer?

I know about the J and K shortcuts for the previous/next (visible) keyframe on the timeline. I was wondering if there was something similar to reach the previous/next keyframe on the current layer. ...
0
votes
1answer
168 views

How to compromise between byte rate, resolution and fps

I want to stream a video on a device full screen (therefore, the dimensions of the display are fixed) What should I focus on to offer the best experience for a given bandwidth? Should I have other ...
1
vote
1answer
1k views

How to select multiple keyframes in Premiere?

I had accidentally created numerous wrong keyframes, trying to tune volume. Now I would like to delete them. Unfortunately, I can't select multiple keyframes by mouse: When I release mouse, all ...
1
vote
1answer
52 views

Transposing keyframes or recursive keyframing in AE

I want to embed a clip inside of itself inside of itself inside of itself. I have a clip of a person using a tablet, and I want the same clip displayed on the tablet. I have tracked the motion of the ...
1
vote
2answers
2k views

Moving keyframes with duration change

I have a still image with four opacity keyframes which look like this: When I change the duration my keyframes stay at the same place (which is normal). Is there a way to move the keyframes ...
3
votes
2answers
2k views

How can I set the first frame of a video to an I-frame and the rest to P-frames (preferably with ffmpeg)?

I'd like to try to do some datamoshing like this tutorial. But I'd like to be able to do it programatically, so instead of vdub and avidemux, I'd like to figure out how to do as many parts of this ...
3
votes
1answer
2k views

Frames with pict_type=I yet key_frame=0

I am trying to exrtact key frame information from a mp4 video using ffprobe with the command: ffprobe -select_streams v -show_frames FILE_NAME 2>/dev/null I am getting the list of all frames. ...
1
vote
2answers
26 views

Is there such thing as an unlimited point matte in Premiere?

Basically my problem is I have footage which I need to manually key. I need something like an unlimited point matte which would allow me to cut an actor out of a background by hand with no limits on ...
7
votes
2answers
2k views

How can I achieve the Ken Burn Effect with greater control or in other software?

I am using the Ken Burns effect in Final Cut Pro X, however it does not allow me enough control over how it behaves. I end up having to cut the video in to multiple clips in order to get the effect ...