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Questions tagged [video]

Video is the technology of electronically manipulating still images that represent motion.

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Is there an efficient (and also free or cheap) way to turn a video file into a time based composite image?

I'm doing a physics project with my math class. My students recorded a videos of balls being dropped. (We are studying acceleration and how to model motion with quadratic equations.) The goal is to ...
David Elm's user avatar
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How to create a music video from sound snippets (see video) [closed]

Many years ago I watched this video here. I was delighted and asked myself, how to create such videos. I couldn't find any answer. But maybe someone here has already created such videos and has tips. ...
Tima's user avatar
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2 votes
1 answer
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How do I align many images of a specific landmark?

Every day, on my commute to school, I took a picture of a tall building in the distance from the same place. Now that the school year's over, I'd like to make a video containing all the photos in ...
Christopher Miller's user avatar
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ffmpeg - set dynamic pts on video

I try to set pts for each frame of the input video. Here is the command I use to slowdown frame 1 and speed up frame 2: ffmpeg -i input.mkv -filter_complex "[0:v]setpts='PTS*2*eq(N,0)+PTS*0.5*eq(...
legeba's user avatar
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ffmpeg - Trouble using if statement with overlay

I would like to apply a .png on two frames of my input video but I'm having trouble using an if statement to determine the location of the overlay. Expected: Frame n°7 -> Frame n°7 + overlay.png ...
legeba's user avatar
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How can I convert H.264 to NTSC for analog video transmission?

For a UAV project we're using an Nvidia Jetson Nano as our mission computer on a fixed wing for object recognition purposes and we agreed that analog video transmission, widely popular with fpv drones,...
Tuğra TÜRKÜCÜ's user avatar
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1 answer
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How do I make a numbered list in adobe after effects?

I need to make an animation with a numbered list. So that the squares with the text "Task 1, task 2 ..." move to the left and the first one disappears from the left, and then the next ...
Георгий Мишарин's user avatar
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What is the Resolution and Frame Rate/Bitrate limitation for VP8 Codec

As per the documentation of VP9 Codec in Wikipedia VP9 has the concept of Profile and Level. Based on these profiles and levels it also has some limitations on Resolution/Frame Rate/ Bitrate as ...
d0tb0t's user avatar
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1 vote
1 answer
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What exactly do FFmpeg options `-itsoffset` and `-itsscale` do?

If I understand correctly, the answer at Lossless A/V delay with ffmpeg seems to suggest that option -itsoffset leads to additional metadata, called "editlist", being added to the video file....
finefoot's user avatar
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How to delay beginning of audio without re-encoding?

I have a file containing both video and audio stream. I want to delay the audio by 5 seconds relative to the beginning of the video, without having to do any re-encoding. The command I tried was: ...
finefoot's user avatar
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In which order do `-itsscale` and `-itsoffset` apply in my FFmpeg command?

I want to use both -itsscale and -itsoffset in my FFmpeg command, but couldn't find any information in the docs https://ffmpeg.org/ffmpeg.html or elsewhere, if the order, in which they're mentioned in ...
finefoot's user avatar
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ffmpeg: smooth zoompan with no jiggle

I'm trying to apply a smooth zoom effect to my 5-second video using FFmpeg, but I'm encountering a shaky/jittery zoom. Here's the command I'm using: ffmpeg -i island_zoom.mp4 -vf "zoompan=z='min(...
Kataklycm's user avatar
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1 answer
28 views

How to remove text from video

I tried many techniques and ai tools to remove text from my video but I still can't get desired results so can anyone help me *Text is at centre so can't crop it
AP creations's user avatar
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How to access a video as *apm file in OBS?

I'm an OBS newbie and completely screwed up by mistakenly saving my video output as an *.apm (audio) file. I tried to extract the file from the apm wrapper using GIMP (Mac) and Image Converter Plus (...
Scott Marshall's user avatar
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Transporting Video Signal Over Optical Fiber

I have stumbled upon an issue while doing an application. In this application there is an existing multimode fiber which is installed. We will be using Sony PXW-Z90 and QuestTel's optical extenders. ...
JohnMoore1000's user avatar
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Galaxy A03s Not Recording at 30 FPS Constant - Mouth Movement and Audio Out of Sync

I have an unlocked Samsung Galaxy A03s [1]. Per the Samsung website, it's supposed to be specked at FHD (1920 x 1080)@30fps. Unfortunately, I almost never get it to actually record at 30fps constant. ...
Shawn Eary's user avatar
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17 views

How to concat videos and images with ffmpeg

I have videos and images. I want to concatenate them. And I want the images to be displayed for specific duration, say 10 seconds. If I first convert image to video and concate, it works ffmpeg -y -...
ARTEM DIACHUK's user avatar
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How to concat several video clips with different property using ffmpeg

I want to concat several videos using ffmpeg. I have 1.mp4 2.mp4 3.mp4 files I used this command ffmpeg -y -i 1.mp4 -i 2.mp4 -i 3.mp4 -filter_complex "[0:v]trim=0:10,scale=1920:1080,setsar=1[v0];[...
ARTEM DIACHUK's user avatar
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6 views

Fix video files which have aspect ratio 1:1

I'm using VideoProc Converter to convert several video clips. The video clips are in different format. My purpose is to make all of them in same format with 1080p resolution and 30 fps. I've noticed ...
Donotalo's user avatar
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Right pypeline to shoot crowd on chromakey, to add 3d on post

I NEED THIS TYPE OF PRODUCTION+VFX+3D ANIMATION VFX+3D My storyboard of the scene: If We shoot the crowd on a chromakey from these angles, which option would be easier and faster: To make a full 3D ...
ferum's user avatar
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18 views

Bulk crop, change speed, volume, zoom, contrast etc Videos

I want to edit some videos in batch, i want to be able to change volume, speed, zoom, contrast, volume and also be able to crop the videos. I want to be able to adjust all the mentioned options.
Marian Pepa's user avatar
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1 answer
15 views

Search for a text in a video (text is from the images, not the speech)

I'd like to be able to search for a text in a video. E.g., if a video frame contains the text "Interactive", then I'd like the solution to point to that frame if I search for this word: (...
Franck Dernoncourt's user avatar
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25 views

Processing h264 video/audio stream

I have separate raw audio and video frames from a camera that I'm trying to merge to a single file. Video processing I have JVT NAL sequence, H.264 video, main @ L 31 data, I had the frames separated ...
Dinamo's user avatar
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2 votes
3 answers
100 views

What does video frames per second mean?

I am a newbie to photography and i keep hear 60fps. What does that mean? And how can it have an impact on my videos?
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19 views

What would be the most efficient codec for streaming long videos?

I have a video streaming website that has videos with lengths of around 3 hours, and video file sizes going between 2GB and 5GB for 720p and 1080p ~30fps H.264 AAC videos. There are some outliers (...
kataba's user avatar
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7 views

Where to find up-to-date video compatibility reference?

I am developing a video streaming website and trying to decide on what the best video containers and codecs would be for its use. For this, I need to know what the compatibility of each OS and browser ...
kataba's user avatar
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30 views

ffmpeg fails to load lensfun database

I'm trying to correct lens distortion of a video. I use below code that I took from here: https://ffmpeg.org/ffmpeg-all.html#Examples-132 (I just change the input and output file paths). ffmpeg -i ...
filibis's user avatar
1 vote
1 answer
24 views

Splitting videos andsubtitles together

I am involved in a project where we would have a video with srt or vtt subtitles and we will need to split it into multiple shorter videos with the subtitles adjusted accordingly for each of the split ...
user3474704's user avatar
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(VSDC) Can you apply a DeLogo filter to an ellipse shape?

I usually use DeLogo under Video Effects/Filter options. Now I am wondering if one can create an Ellipse that has the DeLogo effects applied. I attempted this by creating an ellipse object and then ...
Will Kim's user avatar
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36 views

Ffmpeg dynamic cropping for every frame

I have different crop parameters for every frame. I was using sendcmd but apparently, that is not working. This is the format of my sendcmd file 0.00 crop 'w=466:h=432:x=1373:y=336'; 0.02 crop 'w=324:...
Aman Mehta's user avatar
0 votes
1 answer
32 views

How to insert alternate frames from multipule video sources to create a single output file using ffmpeg

I have a 4K 50fps video file that is split into 4 quadrants (only 3 are needed). It is generated by a slow motion camera running at 150 FPS. Each of the quadrants contains the same image shifted by a ...
openelectron's user avatar
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10 views

Videos of interacting art (from two different types of art genres)

I was unsure about whether to post this on the Computer Graphics stack exchange. I could also have chosen the Graphic Design stack exchange or the Arts & Crafts stack exchange. However, as you ...
Joselin Jocklingson's user avatar
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0 answers
39 views

Downloading an HLS stream: ONLY in sync when downloading with ffmpeg. Possible explanations?

I'm trying to download a livestream that is just a plain hls with no encryption. I usually use streamlink, but this site I'm trying to use recently doesn't output a correct video/audio synced output ...
R.JEON's user avatar
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0 answers
14 views

Setup with two monitors, show overlay on one but not on the other

I am setting up a musical project where our ensemble (5 people) will play live music to a silent movie. We seek the best setup for a live performance where: the audience sees just the movie (monitor ...
tomdeneckere's user avatar
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16 views

Where to find alternative audio tracks for TV series

How can I add several audio tracks with different translations to a series, as film sites do in some series with 10 translations, where can I find them?
Aleksander's user avatar
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0 answers
13 views

Removing myself from mirror

I'm going to shoot a real estate type of video of a local fashion/beauty salon (well, not a typical real estate video, I just need to showcase the studio which only has 2-3 rooms, that's it). The ...
Laszlo's user avatar
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1 vote
1 answer
11 views

How to make sound layers visible on right side of screen in Davinci Resolve

I have used Davinci in Windows but I'm new on mac. So I would like to learn how to display sound bus, layer visualization bigger. I've tried to show which I meant in attached image. Thanks.
Kagifer's user avatar
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FFMPEG COLORHOLD FILTER NOT WORKING. VIDEOS WON'T PLAY

I am trying to do black and white video, while leaving just one color / color range. I was told "ColorHold" filter can do this. But, when I run it with different encoders; I either get a ...
scm360's user avatar
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0 votes
0 answers
62 views

When I attempt to live a video in an infinite loop using the ffmpeg command, it automatically terminates after

When attempting to continuously loop a video using the ffmpeg command with the following syntax: ffmpeg -re -stream_loop -1 -i abc.mp4 -c copy -f flv rtmps://abc.xyz/..... I encounter an issue where ...
Isteyak Ali's user avatar
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0 answers
58 views

How can I use FFMPEG to convert video to black and white, but leave one color / color range?

I have been researching and cannot find anything on how to preserve just one color / color range while converting a video to greyscale / black & white using FFMPEG. For example; all black and ...
scm360's user avatar
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0 answers
28 views

machine hangs during ffmpeg command execution

I'm running this ffmpeg command that does multiple trims on input video and concats those trims to generate output. ffmpeg -i https://d8r14y803bnlk.cloudfront.net/usetldr/2736037/u/796/st/...
Tejas's user avatar
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0 votes
1 answer
61 views

Combine images and draw text on each image with animation xfade

I am using ffmpeg to merge multiple images and an audio to produce a video. I am using drawtext and xfade with dissolve transition. My ffmpeg command is given below. ffmpeg -loop 1 -t 5 -i ./img/img0....
Imran Khan's user avatar
1 vote
1 answer
272 views

Convert video from webm to mp4 using ffmpeg

I have 10 webm videos, each one has the same size ~15mb. When I run following code: ffmpeg -i video1.webm -f mp4 video1.mp4 9 of them finish in ~10 seconds, but 1 lasts more then 3 minutes. I run ...
datahack's user avatar
  • 111
2 votes
0 answers
57 views

Cutting and rejoining videos causes audio de-synchronization using ffmpeg

I'm trying to cut a video into pieces and rejoin them using ffmpeg on Windows 11 x64. Here's the details of ffmpeg: ffmpeg version 2023-11-22-git-0008e1c5d5-full_build-www.gyan.dev Copyright (c) 2000-...
Donotalo's user avatar
  • 121
0 votes
1 answer
337 views

ffmpeg Config to Produce H.264 Constrained Baseline Profile

It all begins with Plex and appears to end at ffmpeg as the easiest possible solution. I love ffmpeg! I use Plex running on Linux to stream over home network to a Roku. I've used this for years ...
Dave Gutz's user avatar
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0 answers
28 views

Why does my DSLR have a 1 minute recording limit?

I have a Nikon D7500, which I've been using to record some video. I know that most DSLRs have a 30 minute recording limit, and mine started off that way as well. The more I filmed, the more my ...
Evelyn's user avatar
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0 votes
0 answers
5 views

How to align text boxes while keeping layout

I'm pretty new to Premiere Pro, and can't get my text (separate boxes, same layer) to align properly. I made a Photoshop mockup. Say you start with this. Here is what is happening Here is what I ...
J. Litke's user avatar
  • 101
0 votes
0 answers
10 views

My OBS Studio Mac OS is stuck in 9:16 aspect ratio

I'm running OBS [[[ 30.0.0 (64 bit) ]]]on Mac OS [[[ 14.2 Beta (23C5055b) ]]] My only options are vertical video. This just happened and I think it's since the beta update.
user43086's user avatar
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0 answers
41 views

Errors adding multiple Subtitles with FFMPEG

I am trying to soft-encode 3 subtitle files into my film. I extracted the subtitles from the DVD using ByteCopy I am using this command to add the files: ffmpeg -i BloodDiamond.mp4 -i ...
Our Man in Bananas's user avatar
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0 answers
34 views

How to stitch two videos side by side using ffmpeg?

I want to create a video that consists of same video encoded at 2 different quality levels, half of each stitched side by side. Basically, like this image, right half of the video is the right half of ...
angel_30's user avatar
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