video

问题 Hi I am not that good with javascript I have videos and I want when the first video end to play the next video and so. Here is what I tried. <div id="myvideo" style="width: 100%; height: 400px; overflow: hidden;"> <%= video_tag "men-kicking-punching-fighting-during-combat-sport-karate-simulation_b8ltmb7kqx_1080__D.mp4", muted: 'muted',autoplay: :true ,style: 'display: block; height: 100%; width: 100%; object-fit: cover;', class: "active"%> <%= video_tag "young-woman-dancing-on-the-stairs

问题 I'm using ffmpeg to segment a video by start/end times. For example, I have a set of time [[0,2],[2,4],[4,6]], and I'd call ffmpeg 3 times here to create the three 2 second videos at times 0, 2, and 4. My problem is that these times (which are correct) are not correctly segmenting the video. When I inspect the stats of the video with ffprobe -i test.mov -show_format , I noticed start_time=-0.381044 . I also know that this seems to be caused by trimming a video in QuickTime to produce this

问题 Refer to this question, it is device-dependent that whether an APP can use multiple MediaCodec instances as video encoder or not. Is there a recommended way to detect the capability of this on devices? For example, if there is an Android API to query the support of multiple video encoder or its max count, or this can be checked when creating/initializing the MediaCodec instance before the encoding process? I want to detect the device capability in my APP without the need of encoding bad

问题 Is there a way to show/hide the video controls on the videojs player at runtime (e.g. player.controls.hide()). Any ideas how to do this? Thanks! 回答1: This is how I hide controls after a 1 second mouse inactivity timeout. var inactivityTimeout = null; $('#vmr_video').mousemove(function(event) { player.controlBar.fadeIn(); if (inactivityTimeout != null) { clearTimeout(inactivityTimeout); } inactivityTimeout = setTimeout(function(){ player.controlBar.fadeOut(); controlBarVisible = false; }, 1000

问题 I'm using bootstrap and I want to set youtube video on background I found this. How could I change this code to use video from youtube? replacing with doesn't work @import url('http://fonts.googleapis.com/css?family=Oswald'); body { margin: 0; padding: 0; background-attachment: fixed; background-size: cover; } #video-background { position: fixed; right: 0; bottom: 0; min-width: 100%; min-height: 100%; width: auto; height: auto; z-index: -100; } <video autoplay="" loop="" class="fillWidth

问题 I am working on a video editing app where each video gets squared in such a way that no portion of the video gets cropped.For this, in case of portrait video, it contains black portion on left & right and for landscape video, it contains black portion on top & bottom side of the video. Black portions are part of the video, they are not for AVPlayerViewController . Here is the sample, I need to cover these black portions with some CALayers . What will be the frame( CGRect ) of the CALayer ? I

问题 I need to create a thumbnail from video while uploading it to CDN. I have been searching for this found this but I am not able to get the screen shot even after following steps. I am using jwplayer for playing video Can someone help me to create thumbnail while uploading video using ffmpeg 回答1: I do not know a way to make a screenshot WHILE uploading, but I do know how to do it after. The simplest code is: ffmpeg -i input.mp4 -ss 00:00:01.000 -vframes 1 output.png Run this script after you

问题 My task is to make a utility that can take a video and time in seconds. The utility should write out jpeg images from the video with the given input. E.g. let the video name be abc.mpeg and time be supplied to the tool as 20 seconds. The utility should write out image from video @ 20th second. # Import the necessary packages import argparse import cv2 vidcap = cv2.VideoCapture('Wildlife.mp4') success,image = vidcap.read() count = 0; while success: success,image = vidcap.read() cv2.imwrite(

问题 I would like in interval to track video play progress in a HTML video. Based on the tutorial, the HTML video DOM timeupdate event can be achieved by something like below: from selenium import webdriver from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC import time chrome_options = webdriver.ChromeOptions() browser = webdriver.Chrome(executable_path=r"\Browsers\chromedriver.exe",

问题 I would like in interval to track video play progress in a HTML video. Based on the tutorial, the HTML video DOM timeupdate event can be achieved by something like below: from selenium import webdriver from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC import time chrome_options = webdriver.ChromeOptions() browser = webdriver.Chrome(executable_path=r"\Browsers\chromedriver.exe",