Questions tagged [video]

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

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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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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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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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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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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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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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4 videos with 4 monitors, need to be played on at the same time

I want to show 4 different videos on 4 old tube televisions (they only have composite video) and I want them to be played on at the same time. (Start at the same time) Unfortunately I have no chance ...
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Is it Possible to Specify a Multivariant Playlist with a Single .m3u8 File?

I am interested in serving a multivariant playlist. Usually, the multivariant playlist is built using a single manifest for each variant, and one additional top-level manifest file. For convenience, I'...
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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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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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Automatically creating a stop motion sequence from single frames using EDL/CSV for the timing, what format should the metadata file be?

I'd like to automatically generate a sequence in Premiere by importing a text file with frame names from the camera (i.e. DSCF9094) and relavent timecodes. This would be to create a stop motion/...
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Davinci Resolve: Is there any way to have color adjustments fade in and out?

I recently recorded a little play in HLG3, and during some scenes, the highlights would get blown out for a bit. I recorded 30 min clips and was hoping there's some way to add a gradual fade-in of ...
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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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366 views

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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How to create a video with a video overlay and a png image with ffmpeg?

I have created a scene with OBS in which there are: A video that takes up the whole screen, 1080p. A second video that is placed in the top right-hand corner. An image that is pasted on top of the ...
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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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Create a video with extremely large height

Very odd request: I want to create a video that has a minimum height of 6-7 million pixels. The width doesn't need to be that over 2000 pixels. The video's content would be purely static (not much ...
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Is it possible to play an audio and a video file simultaneously in full screen mode and synchronize them?

I'm wondering if it's possible to play an audio and a video file simultaneously in full screen mode and synchronize them. I need a temporarily solution in order to avoid to create a new file (this is ...
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Is there any desktop or mobil tools that allow for floating point traction without actual visual of the point based on a 2D video record?

Imagine a point on a video that is visible for a short time with object around it only to leave the frame just a little while the objects are each well-tradable (smooth transitions between frames, no ...
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Can we create a replay script while watching a video with VLC or another player?

I have hundreds of hours of 4K footage of a certain activity (search-and-rescue of lost people using dogs, man-trailing-like). Only part of the videos are really interesting and some of them are so ...
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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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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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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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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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Ways to enhance video experience on video streaming apps

We have a video delivery prototype on Android. A user takes a short video (H264 formatter), sends it to the cloud, and all other users can watch the video on their home. What are some ways to enhance ...
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Reverting Loss from .MOV (MPEG-4 Compression)

I was wondering if it is possible to revert the loss that was caused by MPEG-4 compression. I had HD quality images and our colleague made the grave mistake of converting these HD images into a "....
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Vertically stabilise field

I have video where the first field is unpredictably one scan line higher than it should be, as seen in frame 2 of this GIF. This is caused by my AVerMedia composite to HDMI adapter, but unfortunately ...
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Ways to faster video streaming on video apps

I'm studying short-form video delivery apps like Instagram and nowadays, TikTok, especially as it relates to faster video streaming and lower playout latency. We understand apps like Youtube or ...
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How can I connect/convert an H264 network stream to an AHD stream?

I have a camera which can output video via an HD-SDI signal on a coaxial cable with a BNC connector as well as via an H264 network stream within its ethernet cable. The BNC cable is connected to an ...
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FFMPEG: "smart encoding" when join video clips

is it possible join some clips of h.264 (or h.265) without re-encoding, (or minumum re-encoding, only where clips touch themself? Thanks!
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Adding a color background to an existing Alpha Channel .mov video

I am trying to add a simple solid background to an .mov file with premultiplied alpha. The result I get contains blacks in the gradient/motion blur, meaning I would need to convert the video from ...
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Logitech Brio Ultra HD webcam together with Shure MV7 mic, both cabled to a Windows laptop - feasible?

I quite like the look of the videocamera function of the Logitech Brio Ultra HD webcam, but its audio function not so much and therefore I would prefer to use my Shure MV7 mic. My question is whether ...
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ffmpeg VBR 2 pass with concatenation and normalization of pass log possible?

Rephrasing the question: Say I have multiple files that I do pass1 on which generate pass logs. I want a concatenated result video of an output of pass 2 given all of the pass 1 log files. Is this ...
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Adaptive streaming with ExoPlayer in Android

I have the following code that uses ExoPlayer 2.4.0 API that simply plays a MPEG-DASH video. As I understand it, based on the estimated bandwidth, it selects the right track. But whenever I run it, it ...
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