Questions tagged [video]
Video is the technology of electronically manipulating still images that represent motion.
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How to identify video frames that contain a pattern in a certain location?
The pattern is not a logo or anything like that. It is an imperfection in the video. It was a home movie that I had transferred to an mpeg file on a dvd. The film is old and so there is an ...
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Is it doable to use a text file with a list of files as input when concatenating and reencoding with ffmpeg and -filter_complex?
When trying to concatenate mp4 files with the following script
#!/usr/bin/bash
echo "The number of files to be concatenated?"
read no
ffmpeg -loglevel warning -hide_banner -i ...
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How to make lights flash like in stranger things
So i have this scene where there's a lot of on tube lights and i wanna dim some of them and turn them back on (replicating the flashing effect in stranger things) so does anyone have an app that can ...
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Intra-refresh mode in x264 encoder causes browser's player freeze
I'm building low delay live streaming with use webrtc. My server application use gstreamer and UDP as transport. It works fine except that lost UDP packets leads to too long drops. To improve user ...
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Why is FFmpeg adding a minute to videos created with an audio source & image source?
I've been using FFmpeg to combine an audio file (.wav) and an image (.jpg) into a video (.mp4), the command I looked up seemed to work when testing it, so I tweaked it a bit (mostly just adding the ...
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Is the EF mount on the BMPCC 6k weak? If yes, how weak?
BACKGROUND / PROBLEM
Hi, I plan on getting a Blackmagic Pocket Cinema Camera 6k g2 sometime soon, and don't know the physical limits of what the body of it can withstand. I've heard that EF lens ...
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How to clip an image/layer like photoshop to an animation that has a transparent background in Premier pro?
Good day! I'm new to premiere pro, and here is my issue. I have an animation/sequence I'm currently compositing in premiere pro that has a transparent background and I forgot to add shadows on it, ...
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What do we call a video where there are multiple adjacent photos (on 1 slide) and the view moves from left to right. How does one create such video?
An example of such video is:
In the above video, we can see that the video starts with 3 photos (that fit onto the screen) and as the video progresses, more photos just ...
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How do I add (layer) a .wav audio file to a ProRes 422 HQ .mxf video without re-encoding?
Here's the detailed info of the .mxf video
General
Complete name : D:\R-2180634-1250074380.jpeg-gigapixel-low_res-scale-2_00x.mxf
Format : ...
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ffmpeg drawtext + colorspectrum - background partly transparent only
I am currently working with the drawtext/alphamerge filters to have the text coloured with colorspectrum on a transparent background. While I have been trying many options, the closest I managed to ...
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Issues in trimming a video with FFmpeg
I have a .webm video captured through a web browser. Using ffmpeg, I want to trim it into its first 30s without re-encoding and quality degradation. But I have issues doing it and ffmpeg complains ...
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Trapcode Particular - Choppy Streaklet
I'm trying to recreate the hurricane that you see faded in this screenshot, speed and shape are in a good place but the problem is the streaklets aren't visible, it looks like the start of the ...
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Camera recorded audio and recorder audio differ in time
I have a Fuji X20 and recorded a video with it. The recorded MOV file contains a video stream of type H264 - MPEG4 ACV (part 10) and an audio stream with these parameters (VLC player)
Codec: sowt
...
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Creating a 0x0 webm file
Currently, I am trying to create a video that changes size using the ffmpeg concat function. However, I want to make the video hide, and the only way to do that is to make it a line. But, I want to ...
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How to extract part of a video with subtitles included?
How to extract part of a video with subtitles included? I have a video (in .mkv format if it matters) and its subtitles of multiple languages (usually embedded in the file as selectable subtitles (but ...
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"Non-monotonous DTS in output stream 0:0 This may result in incorrect timestamps in the output file." error
Adding all mp4 file in the directory with FFMPEG .
my usual command:
ffmpeg -f concat -safe 0 -i <(for f in ./*.mp4; do echo "file '$PWD/$f'"; done) -c copy output.mp4
This shows below ...
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Putting a png background on h264 encoded mp4 video using ffmpeg
I would like to put a png file as a background to an h264 encoded mp4 video. I am just trying to replace the video's white background with a specific png background. They are both of the same size.
...
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FFMPEG Highest quality without highering bitrate
I need the highest possible quality without needing to raise the bitrate or changing the codec (h264).
I came up with this command
ffmpeg -c:v h264_cuvid -i input.mp4 -preset placebo -b:v 1400k -b:a ...
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Nikon D3500 damage while recording video
I read on a another photography site that the Nikon D3500 can overheat and suffer permanent damage while recording video. Does anyone know if there is any truth to this? It seems implausible that ...
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FFmpeg saturates memory + CPU usage drops to 0% during very basic conversion of PNG files to MP4 video
I have this Python function that runs ffmpeg with minimal options from the Windows command line:
def run_ffmpeg(frames_path, ffmpeg_path=notebook_directory):
'''
This function runs ffmpeg.exe ...
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Cryptic FFmpeg + Python error: "Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_crop_1"
I want to use ffmpeg with Python in a Jupyter notebook to create a video from 2000 PNG image files generated by matplotlib. I'm on a Windows 7 machine.
The frames are very narrow and high, so I'd like ...
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393
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Export a video to 4k or 2k with FFMPEG and without lag (UPSCALE VIDEO)
how do I upscale a video to 4k or 2k with ffmpeg? youtube encodes the videos which results in some quality loss of the video. So to make youtube use VP09 encoder on my videos, I have to export the ...
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Sony PXW-Z280V AVC strange Long GOP pattern
I have video shot using a Sony PXW-Z280V using AVC_3840_2160_HP@L51 with 29.97 frame rate. Upon analyzing the MXF file structure, I notice that the Index Entry Array seems incorrect. In particular the ...
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Is it possible to create Digital Cinema Package with resolution 2030 by 840? or any custom resolution?
My client wants DCP format explicitly with resolution 2030 by 840 for unknown reasons. I've tried Premiere pro to export Wraptor DCP but we can't set a custom resolution with that, instead, there is a ...
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229
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DVD similar menu for USB with mp4 movies that work on SmartTV with USB?
I have converted my old VHS-movies to MP4 and put them on a USB to be able to watch them on my smartTV which works well. However, I want a DVD-simular menu where I can have a description, and maybe a ...
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Estimating video file size given camera parameters
I am trying to predict video file size given:
camera fps.
number of horizontal pixels.
number of vertical pixels.
bit depth.
time duration of the video.
using the following formula
file_size = ...
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898
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Red Icon on PremierePro video track
Does anyone know what this red icon is? I'm on a project that someone has already worked on. Not sure how this icon came up.
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VLC - MPG Multiple video streams in same file?
I have a MPG video file which seems to contain multiple video streams (simultaneous) in the same file. When I try to stream it in VLC it will automatically open two windows showing a color stream and ...
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Meaning of ffmpeg output (tbc, tbn, tbr)
I am using ffmpeg to tell me video info. Specifically:
ffmpeg -i video.ext
I get the output:
Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576 [PAR 12:11 DAR 4:3], 9578 kb/s, 25 tbr, 90k tbn, ...
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Free tool/app to automate video generation out of video clips (quick selection of highlights from video clips, add intro and end texts, captions)?
I have a series of video clips that students created for their projects with embedded systems.
I'm seeking for a tool that would allow me to quickly select highlights from short video clips, add ...
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1
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550
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Use ffmpeg to stream rawvideo from a USB camera
I have a image sensor that streams 640x480 in RAW8 format. A USB controller is receiving this data, packing two pixels of 8-bits each and sending to USB as a 16-bits per pixel YUV422 format (this is ...
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ffmpeg merge video with 2 audio files
What I'm trying to accomplish is the following:
I want to use ffmpeg (preferably a single command) to combine a video (video.mp4) file with an audio file (audio.mp3) and have some background music (...
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How to automate video generation out of short video clips (losless selection of highlights, add intro with title, end texts, captions)?
I have a series of video clips that students created for their projects with embedded systems.
I'm seeking for a tool that would allow me to quickly select highlights, add transitions, add title and ...
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1
answer
48
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What is the effect used in movie gulliver's travels title cards
I am not a media professional, But kind of mind-blown by the effect used in the Gulliver's travels title cards (in the beginning)
Added few screenshots of it, As i couldn't find the right word to ...
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Can i crop the video using ffmpeg during recording?
Has the ffmpeg function which allow record only particular part of the video? For example for slit scan photo you don't need full size video, and it should be faster if it is possible record a few ...
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Can I fix choppy video shot at wrong shutter speed?
I shot some video at 60fps with the intention of putting it in a 24fps timeline slowed down. (59.97 and 23.976 actually) Usually I shoot at a shutter speed of 1/125 for shots like this. I shot some at ...
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How to change Background color in a Video? SOFTWARES: Filmora or Adobe Premier pro
I have a little video animation. I want to change the backgroud color (Part of built-in Video) from black to white throughout the whole video without disturbing the main focused logo (RED logo).
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FFmpeg 5.0 vs 3.4 performance
I was trying to compare ffmpeg 5.0 vs version 3.4.6 in how much performance improvements I would get while transcoding a simple 720p video into a H264 video. On my laptop, I noticed around 5-10% ...
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H264 AVC codec Baseline@L3.1 vs High@L4.2
When I convert a video with ffmpeg, and use mediaInfo to review the metadata, I see the followings for the video codec:
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.1 ...
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260
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What is this effect (Motion Trails) called and how can i create it?
I'm new to adobe premiere pro and I don't know what this effect called and how to create it.
YouTube
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FFMPEG concat two video together but one plays back in a slower speed
I am trying to concatenate two videos using FFMPEG concat. The second video plays a slower speed and loses it's audio, but not only that, the time elapsed counter in the windows video player also ...
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Can MKV hold multiple images in sequence (i.e. slideshow?)
Everything I'm searching for is for people who want to have their album artwork incorporated into a video. What I'm asking is if MKV can hold multiple images in succession, i.e. for videos like this ...
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FFMPEG: Why can't I work in frames instead of HH:MM:SS?
I have a video-only stream that I removed the audio from without re-encoding. The video information is as follows.
hevc (Main 10), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x1608
Frame ...
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Confused about methods to speed up video
I have some CCTV recordings that I would like to speed up (like a timelapse) and I am confused about which method to use. I tested Avidemux and VSDC Video Editor and they both speed up videos in ...
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FFMPEG: Video format replacement for webm (alpha channel)
I am currently creating a webm file using two mp4's (alpha - black background, white silthoette) and normal video.
Using following ffmpeg command:
ffmpeg -i color.mp4 -i alpha.mp4 \
-...
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929
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MP4 file has incorrect length (duration) and plays back 5x slower than it should
I have five GoToMeeting (GTM) .mp4 recordings that I saved and downloaded from a five-day class I was teaching. Each recording represents each day's appx. 8 hour class duration. I am importing them ...
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After Effects: How to do Organic Contraction effect
I've seen this effect in a lot of videos, you can take a look here:
video link
Which key word identifies this contraction movement effect? Or how can we do that?
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39
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Displaying a clip in a transparent rectangle
So I have Downloaded the dynamic, zoom out-in youtube subscribe thingy and now Im just wondering how can I set my clip into the transparent rectangle, which is changing it's with and height in time (...
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1
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214
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Extreme video stabilization in Linux, again
I have a 3840x2160 MOV file taken with my EM1.II Olympus camera. It is a videoclip of a tiny bird taken in the wild without any aids. Hence, despite the good stabilization feature of the camera, the ...
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25
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Software for speeding up a video
I want to speed up a video clip in the order of 10x. However, I wasn't able to find a suitable software for that. I tried Movavi but the maximum speed up is 1000%. So I am not able to change the speed ...
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