video

问题 I need to implement video concatenation in my ASP.NET Web API. I could successfully concatenate some sample videos downloaded from internet using 'FFMpegConverter' Nuget Package . But when I tried concatenating files captured from my mobile and tried opening it, I got the following error. Below is the code snippet I'm using: var ffMpeg = new NReco.VideoConverter.FFMpegConverter(); ffMpeg.ConcatMedia(_fileNames, videoRootPath.mp4, NReco.VideoConverter.Format.mp4, set); These are the Property

问题 Is there any way to play facebook video with autoplay in Android? I tired to use WebView, but it seems html5 mobile does not allow auto play video. WebSettings webSettings = mainWebView.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setMediaPlaybackRequiresUserGesture(false); mainWebView.setWebChromeClient(new WebChromeClient()); mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); mainWebView.loadUrl("https://www.facebook.com/video/embed?video_id

问题 Here are my goals. Capture video continuously until 'q; is pressed Every ten seconds save the video in created directory file Continue step two until 'q' is pressed I am executing the following code. But when creating files it's creating 6kb files and saying cannot play. I am fairly new to opencv and python. Not sure what I am missing. Running this code on pycharm with Python 3.6. Also the cv2.imshow('frame',frame) stops after ten seconds but recording is happening in background and files are

问题 I have a problem for writing x264 video(or single frame) on memory buffer. In opencv for images, imencode and imdecode do this task. But i want save x264 video frame for lower memory usage and sending on internet. I am able to with jpeg but jpeg size bigger than x264 video frame and quality much worser. I searched but i can't find how i write video frame on buffer. Here is the example code to taking frames on webcam import numpy as np import cv2 cap = cv2.VideoCapture(0) cap.set(3,320) cap

问题 I'm trying to create video stream server and client with node fluent-ffmpeg , express and ejs . And a haven't solve this for a while. What I want to do is to play video beginning by certain time. The following codes make it with Safari browser on windows but with others it makes a loop of a few seconds or it says video format not supported server code (run.js) : app.get('/video', function(req, res) { //define file path,time to seek the beegining and set ffmpeg binary var pathToMovie = '..

问题 I'm trying to create video stream server and client with node fluent-ffmpeg , express and ejs . And a haven't solve this for a while. What I want to do is to play video beginning by certain time. The following codes make it with Safari browser on windows but with others it makes a loop of a few seconds or it says video format not supported server code (run.js) : app.get('/video', function(req, res) { //define file path,time to seek the beegining and set ffmpeg binary var pathToMovie = '..

问题 I am using VideoView for playing video. If I go out of the application, while returning to the application ie in onResume() it should play the video from where it was stopped. 回答1: To get the current progress(check this in onPause): long progress = mVideoView.getCurrentPosition(); To resume (in onResume): mVideoView.seekTo(progress); 回答2: In onPause(), save the current position of the player, e.g. in shared preferences. In onResume(), retrieve the value and then use MediaPlayer.seekTo() to

问题 I am using VideoView for playing video. If I go out of the application, while returning to the application ie in onResume() it should play the video from where it was stopped. 回答1: To get the current progress(check this in onPause): long progress = mVideoView.getCurrentPosition(); To resume (in onResume): mVideoView.seekTo(progress); 回答2: In onPause(), save the current position of the player, e.g. in shared preferences. In onResume(), retrieve the value and then use MediaPlayer.seekTo() to

问题 I am using VideoView for playing video. If I go out of the application, while returning to the application ie in onResume() it should play the video from where it was stopped. 回答1: To get the current progress(check this in onPause): long progress = mVideoView.getCurrentPosition(); To resume (in onResume): mVideoView.seekTo(progress); 回答2: In onPause(), save the current position of the player, e.g. in shared preferences. In onResume(), retrieve the value and then use MediaPlayer.seekTo() to

问题 I need to split a webm encoded video into png frames, without losing transparency. I use the following ffmpeg command: ffmpeg -i dancer1.webm -pix_fmt rgba frames/%04d.png This produces a directory of pngs, but why is each output frame is missing transparency? I have used this example video, which contains an alpha channel. See it playing over a background here. Here's an example output frame from ffmpeg: ffmpeg produces the following output when it runs: ffmpeg version N-60294-g549f052