Questions tagged [video]

Video is an electronic medium for the recording, copying, and broadcasting of moving visual images. Use more specific tags when relevant, such as [video-editing] for questions related to trimming and modifying videos, [video-encoding] for questions related to editing videos into any format, and [video-processing] for questions related to processing videos with filtering video frames.

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11 views

Initializing an output file for muxing mkv with FFmpeg

I'm a first time user of ffmpeg and I'm having trouble with initializing an output file for mkv muxing. I followed the description on the middle of this page but it doesn't work. When I call the ...
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1answer
25 views

My Video Filesize Does Not Equal Bitrate x Time

I'm trying to use ffmpeg to encode some videos with h264. I'm trying to hit a target filesize. My code is: D:\SOFTWARE\ffmpeg\bin\test\ffmpeg.exe -i "%~1" -c:v libx264 -preset veryslow -b:v 200k -an ...
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0answers
40 views

Problem setting video frame rate using AVAssetWriter/AVAssetReader

Situation: I am trying to export video with some parameters like video bit rate, audio bit rate, frame rate, changing video resolution, etc. Note that I am letting the user set the video frame rate ...
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0answers
23 views

How to extract bounding box coordinates from an image with OpenCV?

I have been trying to extract a bounding box that has been drawn on an image (frames of a video in this case). I am stabilizing UAV videos that have bounding boxes on them, then need to extract those ...
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0answers
10 views

Upload video fail cordova-plugin

I have a code for upload videos to php server. I'm using FileTransfer (cordova-plugin-file-transfer v1.6.3). All the options of the recording time limit and qty limit are ok. The issue is when i try ...
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1answer
18 views

How to calculate the size of the video based on given chroma information?

I was asked in the test on what will be the size of the video of 10 seconds displayed at 25fps assuming each chroma sample takes 4 bits, luminance component takes 8 bits and 4:2:0 chroma sampling is ...
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20 views

What would be the most efficient way to download the last minute of a Youtube livestream and render a stand alone clip of that minute?

I need to find a way of downloading the last 60 seconds of a video from YouTube utilizing Python or Php and then render a new video of that minute. I imagine the best way is downloading the entire ...
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0answers
11 views

How to stop preload off for HTML5 Video in mac OS safari browser for reduce page load time

How to stop preload off for HTML5 Video in mac OS safari browser for reduce page load time. I have owl carousel with multiple HTML5 Videos. I have added preload="none". It works fine in chrome & ...
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0answers
6 views

Pause Video on Accordion Tab Change

I am looking for a way when changing tabs on the accordion view (xtra-small browsers) to pause the video whenever I change the tab. Currently I have the functionality for the tab view when tabs ...
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0answers
10 views

React Native Af-Player not playing on iOS

I'm using Af Player ( from this repo) to play a HLS m3u8 stream on my React-Native app. In Android, videos just play well, but in iOS they don't even start. Just load, load, load, load... but no ...
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24 views

Is it possible for me to put a mask over a transparent image with ffmpeg?

I'm trying to make an overlay with a mask over a transparent image with ffmpeg, but the background of the image that gets the mask turns black, is there any way to make this background remain ...
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1answer
17 views

Iterating Videos

I am trying to get the player to iterate through an array of strings that reference the URL of videos. I can only get it to play one of the videos in the array, if I hardcode it in the code, but I ...
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0answers
15 views

How to cut a video view in Android Studio?

I'm trying to use ffmpeg to cut a video, but it always came up with an error message or the cod did not match Android Studio. Now I'm looking for a way to start a video at a certain point and set the ...
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2answers
44 views

ffmpeg to calculate audio/visual difference between compressed and non-compressed video

I'm trying to calculate the audio + visual difference between a harshly compressed video file and one that hasn't been. I'm using pipes because ultimately I wish this to take src from a camera stream. ...
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0answers
34 views

HTML5 CSS animation to video slideshow

I want to create dynamic slideshow using HTML5 animations and later export it to make a video using ffmpeg. Is this idea feasible? What stack is Animoto using?
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2answers
25 views

background css video help needed

Is there anyway I can put a video background in the css file? google .home-sec { padding-top: 10px; padding-bottom: 60px; background: url(../vdc-video.MP4) no-repeat; padding: 0; ...
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0answers
7 views

Apple ARKit Unity

I have a problem with Apple ARKit and Unity. I want to do an AR Experience with 12 different Targets that you can scan and on eacht target there is a Video. The 12 Targets are set as ReferanceImages, ...
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1answer
20 views

how to remove or hide video controls, not all, only fullscreen and volumn

I want to hide video controls, but still have paly&pause&progress, hide or remove volumn、fullscreen and the three dots icon in right-bottom remove this icon: i know attribut 'controls', but ...
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0answers
21 views

Going About Creating a Script to Detect Hard-Coded Subtitles

I have a ton of movies and instead of opening each one individually and checking if it has hard-coded subtitles, I would like to make a script that can do it for me. I've tried researching it on ...
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0answers
8 views

Video looks invisible on iPhone

I'm adding video to my website and this works perfect on desktop and on Android Chrome browsers. On iOS Safari however, the video is not shown, it only shows a play button, and not a preview of the ...
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0answers
13 views

Downloading embedded video from URL with wget

I was on the news today and would like to download the video from their web page. I have been strugling with terminal for an hour now. What is the best way to download a video like this? https://www....
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2answers
32 views

Why do i need a Video Player Engine even though HTML5 can do everything i need? [on hold]

Simple question: Why do i need a Video Player Engine like video-js or mediaelement.js even though HTML5 can do everything i need? (Playing videos in modern browsers) Background information: I have a ...
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1answer
28 views

ffmpeg: record/capture stream and do scene detection at the same time

Is it possible to both capture (record) an RTSP stream and capture scene change events using a single ffmpeg command? I can almost do what I want with: ffmpeg -i 'rtsp://mystream' \ -map 0:v -map 0:a ...
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1answer
21 views

FFmpeg - Merge two images (.png) to video (.mp4) doesn't work

I want to merge two images (names are not numbered in a sequence) to a video, but the result includes only a video of the first image. I would appreciate any kind of help! ffmpeg.exe -r 1/5 -i ...
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1answer
58 views

FFmpeg C++ decoding in a separate thread

I'm trying to decode a video with FFmpeg and convert it to an openGL texture and display it inside a cocos2dx engine. I've managed to do that and it displays the video as i wanted to, now the problem ...
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1answer
9 views

Does SharePoint Online support .MOV video files

I would like to create an Asset Library to store Drone photos and Videos in SP Online. I've created a content type where parent content type is Video. The name of the Content Type is Drone Videos. ...
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1answer
21 views

libVLCSharp fail to create MediaList

I'am playing arround with libVLCSharp and I found a wired behavior. Actually I have no problem creating a media and playing it with MediaPlayer. However when I try to create a Media from MediaList it ...
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0answers
20 views

Direct3d Color space conversion in GPU

Creating direct3d surface inYV12 format and rendering video frames in yuv420 format causes a blur video. Seems like there is a smog on video. I think this is because yuv 420 color space format's data ...
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1answer
30 views

Get thumbnails for Array of Videos

I have found a few ways to get a thumbnail for a video using AVAsset However I want to get the thumbnails for an array of videos. I am populating the array from the applications documents folder on ...
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1answer
32 views

Downloading *.mp4 files form url with Python

Im triying to generate an array of [url_audioenci,url_caratula,titulo_cancion,nombre_artista] to download a list of music from http://los40.com.ar/lista40/. I know how to download media with Requests ...
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0answers
17 views

I need to show feature video in woo-commerce product page

I need to show feature video in the woo-commerce product page but I have no idea how to do this. I need help
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0answers
19 views

cannot Click at cennter of <Video> to play or pause

I'm having a problem like this that needs help. http://sovico2.tqdesign.vn This website, on the banner slide I use the bxslider library and attach to the slide, for some reason I can't click play / ...
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1answer
31 views

How to embed videos with a customized player and automatic transcoding?

I need to embed videos into my web application and have the following requirements: The videos need to be automatically transcoded into different resolutions Playbackspeed needs to be selectable ...
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0answers
18 views

All kind of software installer , video files extension got changed and is not working after changing extension type

I was trying to install a software but it turned out a virus. Now all kind of files including video subtitle, exe, andriod studio, xampp got corrupted. all video and exe files extension got changed to ...
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0answers
16 views

Does open street map license allow to graphically edit maps and publish them to youtube?

I want a legal advice if I can grab images from the open street map API, superimpose graphical information such as lines, areas and text to create videos for commercial use, publishing them to the ...
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0answers
25 views

How to download video from a blob URL or its m3u8?

How to download a video whose URL is a blob? Similar 'download video from blob URL' questions reference chrome extensions i.e. HLS downloader to obtain an m3u8 from the blob URL. Then to use software ...
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1answer
15 views

Unity AVProVideo Plugin causing movement jitter and overall frame drops

I'm using this plugin from the asset store to record the screen. Asset store link I'm wondering if anyone else has seen frame drops while using this plugin. We have another plugin that shows ...
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0answers
36 views

mp4 video in UIWebView will play on simulator but not on device

I am building a native iOS app in the Xamarin framework. I have UIWebView that I am evaluating javascript on to get the html needed for the webview. The html includes tags. On the desktop website ...
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0answers
28 views

Exoplayer/Android Media Player Not Playing Video with AC3 Audio

I'm using Exoplayer version 2 for playing Video from Internal Storage and it works fine but whenever video contains ac3 type audio,exoplayer not plays audio,it only display video. please help me ...
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0answers
17 views

How do I remove gap between merged videos AVfoundation

I am working on merging clips using avfoundation recorded by iphone camera, everything's going well when it comes to recorded video without audio but when I enable the microphone to capture the audio ...
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0answers
32 views

No such filter: '"' Error initializing complex filters

I am trying add some text on video, but I am getting: No such filter: Error initializing complex filters. Invalid argument Below command using for adding text - In Java: String complexCommand ...
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1answer
27 views

How can I create time gaps in video recordings using newest version of FFMPEG?

I am new to the forum so I hope I've formulated this question correctly. I have downloaded newest version of FFMPEG and I would like to use it to modify existing video by inserting time gaps in it. ...
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0answers
11 views

Prevent video's content that are within display:none from being downloaded

I've created two separate component to display some videos in different layout accordingly to either desktop or portable device. The problem was with the page loading speed where I've then checked ...
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0answers
53 views

ffmpeg image + audio to video, file size is very large?

I have a single image and a single audio file, and I'm trying to combine them into a video. The image is 186k and the audio is 242k, and the resulting mp4 file is 928k. Is this just one of those "Yeah,...
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1answer
16 views

Swift AVAssetWriter Record Video with Mic Audio AND Device Audio into a Video with ONE Audio Track AVAssetTrack

I am recording the screen and I want to combine the mic audio and the sounds from the app's audio into a video with ONE stero audio track. With the AVAssetWriter setup I have, it creates a video file ...
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0answers
22 views

How do I match framerates between a VideoCapture and VideoWriter in OpenCV?

UPDATE: Based on feedback from this site and others, it appears OpenCV is not a great platform for subtleties of video recording (like frame-rate issues). I have two threads running in a C++ OpenCV3....
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0answers
28 views

How to download large files using PHP [mp4]

I'm building a website to download a list of video files (.mp4) hosted on another website based on a certain criteria. My idea was to make a PHP file that takes the criteria (GET) creates an array of ...
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1answer
29 views

C++ WinRT - How to dynamically scale WriteableBitmap to match current screen resolution?

Let's say you created WriteableBitmap at 1280x720, you wish to match the current screen resolution 1920x1080. How do you scale it ?
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1answer
24 views

Cannot rotate / transcode video with any tool

I have a video captured from Android Virtual Device (Android Emulator). Its format is WebM. I need to rotate it 90 degrees counterclockwise. But I can't do this: I have tried FFMpeg - it drops ALL ...
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1answer
24 views

Problem Merge Audio To Video on iPhone 5s

I Merge Audio File To Video, That's works well on Other devices but except iPhone 5s,5. The error is : Error Domain=AVFoundationErrorDomain Code=-11822 "Cannot Open" UserInfo={...