video

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 am trying to do an application in which I would like to give option to user to clip a video using double seekbar so that video can be cropped. I had hassle importing FFmpeg into Eclipse. However, that pain is over, and I got two points of video and can instantiate FFmpeg's instant. My focus is to know to know the method and procedure to crop a video. I got the command of cutting it, that is, ffmpeg -ss [start] -i in.mp4 -t [duration] -c:v copy -c:a copy out.mp4 However, how do I use this in

问题 This is a follow-up question to: Flutter (Dart): Merge two videos and view the new output in the device's gallery (photos) In essence, I am trying to record two videos, merge them and then view the new video in the gallery. I am currently having some issues with the flutter_ffmpeg package. I uploaded the my Flutter project onto GitHub here: https://github.com/IttaiBarkai/Flutter-Video-Merger Below is a snippet of my code used to execute ffmpeg: void _videoMerger() async { final appDir = await

问题 In Youtube, video thumbnails started to play a short preview when one hovered their cursor over them. Works only on desktop . I tried to get the link for one https://i.ytimg.com/an_webp/d1w3CWfhzNQ/mqdefault_6s.webp?du=3000&sqp=CPyAhNIF&rs=AOn4CLBqWnVyWD9F_P4j_WFk7LAGs4pNUA It works only for the above video, When I try to change the id in the link to view another video does`t work so how can I get a id dependent link for video preview? 回答1: The spq parameter is base64 encoded protocol bufffer

问题 I am developing a web site where people can access audio and video files. I have the code for downloading the files, which consists of two action methods as follows... public ActionResult GetAudioFile(int id) { return GetFile(id, true); } public ActionResult GetVideoFile(int id) { return GetFile(id, false); } private ActionResult GetFile(int id, bool isAudio) { // Code to get info about the file, etc omitted for clarity string downloadFileName = // full path to audio/video file byte[] bytes =

问题 I am developing a web site where people can access audio and video files. I have the code for downloading the files, which consists of two action methods as follows... public ActionResult GetAudioFile(int id) { return GetFile(id, true); } public ActionResult GetVideoFile(int id) { return GetFile(id, false); } private ActionResult GetFile(int id, bool isAudio) { // Code to get info about the file, etc omitted for clarity string downloadFileName = // full path to audio/video file byte[] bytes =

问题 i'm trying to perform an algorithm to convert from yuvj420p to yuv420p. The difference between both formats are the range values. yuvj420p [0-255] and yuv420p [16-239] I want to know how to adapt the values to the new range. 回答1: A bit late to this, but for future reference, in case it helps anyone, here is how to deal with this problem with FFmpeg. When exporting, say, an uncompressed AVI from After Effects, sometimes the FFmpeg conversion seems to lack contrast, as if the range was being

问题 So I am developing a chrome extension. I am trying to get the Youtube video current playing time I am aware that there are many similar questions asked in other posts, but none of their code works for me My code is like this, I have to inject my code to the content script first chrome.tab.query({highlighted: true}, tabs => { tab = tabs[0] chrome.tabs.executeScript(tab.id, {code: "temp = document.getElementById('movie_player'); alert(temp); alert(temp.getCurrentTime());"}, respond => {}); } So

问题 While trying to download a YouTube video from python, I come across this error AttributeError: 'YouTube' object has no attribute 'get_videos' . Last line causes the error. import pytube link = "" yt = pytube.YouTube(link) videos = yt.get_videos() Thanks! 回答1: import pytube link = "https://www.youtube.com/watch?v=mpjREfvZiDs" yt = pytube.YouTube(link) stream = yt.streams.first() stream.download() Try above code. Here and here similar code which does not work. 回答2: from pytube import YouTube yt

问题 Using HTML5 I am trying to get the attribute (ie rotation), located in the header of a mp4 (I play it using a video tag), to do this I am trying to get the bytes that make up the header, and knowing the structure, find this atom. Does anyone know how to do this in javascript? 回答1: I do not think you can extract such detailed metadata from a video, using HTML5 and its video-tag. The only things you can extract (video length, video tracks, etc.) are listed here: http://www.w3schools.com/tags