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Questions tagged [timelapse]

77 questions
224
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25 answers

How can I quantify difference between two images?

Here's what I would like to do: I'm taking pictures with a webcam at regular intervals. Sort of like a time lapse thing. However, if nothing has really changed, that is, the picture pretty much looks the same, I don't want to store the latest…
carrier
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ffmpeg: smooth, stable timelapse videos from normal speed videos

For a one hour dash cam video in normal speed, is it possible to create a smooth timelapse video from it? Most tutorials online I found about "timelapse + ffmpeg" are with static jpeg files combined into a timelapse video. These often result jiggle…
est
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iOS Frame by Frame video playback forward/backward

I'd like to show a video on an iOS device in slow motion. My view contains a video (~2 seconds long) and a slider. The user can move the slider and step (forwards and backwards) through the movie frame by frame. MPMoviePlayerController lacks the…
gon
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Do timers continue if function didn't finish

I'm currently creating a Windows Service which makes use of a timer interval. This timer repeats every second, but it could take longer than one second to finish Elapsed event of the timer, which is created as following: Timer timer = new…
M Zeinstra
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How to create a time lapse video like the photos app?

I'm looking for a way to create long time lapse videos on an iPhone running iOS 9, and hoping to get some pointers on how to start. Ideally I would compress 1 hour of footage into 1 minute, so the scaling factor is 60. I take one frame out of 60 and…
Alex Stone
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Javascript timelapse-effect: displaying 30 images/second (read for more detail)

I have a client who has made a 'Visual Diary' of photographs that he took once a day for 365 days, for his portfolio site. He wants me to put these together into a time-lapse effect piece. I thought about using Flash but in the end opted for…
Jack
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Can I make time-lapse view in perforce faster?

I have problem with perforce. I like perforce's time-lapse view function very much. It helps me to find who did mistake. The problem is when some file is pretty big and frequently changed, opening time-lapse view takes very long time. So, I need…
P-P
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Use quartz composer for creating time lapse videos

Hy there let's say I have 1000 pictures which were taken with a delay of 1 second. Is it possible to create a video from these pictures using quartz composer? In a second step I would like to add labels to the video stream depending on the current…
Besi
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FFMPEG: how to extract every 2-nd I-frame from a video file

I'm looking a way to extract every second (2nd) I-Frame using ffmpeg and save them as a new timelapse video. So far I managed to save all I-frames by the following command: ffmpeg -i $FILE -vf "select='eq(pict_type,I)',setpts=N/FRAME_RATE/TB" -r…
tol
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How to improve stabilization of image sequence of face using Python OpenCV

I have been capturing a photo of my face every day for the last couple of months, resulting in a sequence of images taken from the same spot, but with slight variations in orientation of my face. I have tried several ways to stabilize this sequence…
konewka
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Making a timelapse by drag and drop - A rebuild of an old script using ImageMagick

I have written an apple script previously to automate a task I do in my work many times. I shoot Raw + JPG in camera, copy to hard drive. I then drag named and dated folder eg. "2019_08_14_CAM_A_CARD_01" on to an automator app and it divides the…
cursor_major
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ffmpeg record timelapse camera v4l2

How can I instruct ffmpeg (v.: 3.4.5) to record only one frame per minute from my video camera at /dev/video0 and copy it to a new file with 30 frames per second? Goal is timelapse video of some months and record only one frame per minute into the…
Paul G.
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video timelapse with timestamp overlay

I'm reconstructing a video from a large amount of jepg files. I'd like to keep a trace of original images' timestamp (at least every N minutes) Since there is no mainstream video container format allowing per-frame metadata, I could use a text…
drzraf
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AVMutableCompositionTrack scaleTimeRange in IOS9.1 won't work for when creating a fast forward video

I am using ScaleTimeRange method to create slow motion and fast video in IOS. It works perfectly fine in IOS 8 but not in 9.1 any more. It seems to me Apple just fucked it up and changed some stuffs. Here is my codes double currentRecordingRate =…
privateson
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mp4parser-Appending different mode videos

I tried this library for appending videos-mp4parser ..it works fine for appending same mode videos..but i want to append different mode videos-time lapse and normal mode video..How should i proceed in tht?I tried below code for merging videos in Vid…
Programmer
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