video-streaming

问题 I'd like to create an app that pulls multiple live video feeds, supplied either by coax, hdmi or some other standard, into WPF for manipulation (i.e. apply a few transforms or pixel shaders) which is then output to monitor. What would I look at to get started with this app - is there any hardware that would make things easier? 回答1: If you are pulling in standard broadcast via coax or over the air, a $100 ATSC HD TV tuner will do. I don't have any experience with HD capture cards (I think they

问题 few days earlier I've came to a problem where I have to access the default web cam, Actually I was making an vb.net app (desktop based) where an user can directly do video chat with the other user via Online or Offline(lan based), the type of web cam can be anything, like web cams installed in modern laptops, or external web cam. I don't know anything about how to acces web cam from vb.net, how capture video & then transmit it to the other user. Please help me. 回答1: try to follow this example

问题 I want to play RTMP server address in Xamarin.forms (Shared), as I am a beginner and don't know much about the Xamarin.Forms(Shared). So, can anybody help in this? How to play a video with RTMP server address? Thanks in advance. 来源： https://stackoverflow.com/questions/40762069/how-to-play-rtmp-server-address-in-xamarin-forms-shared

问题 I want to serve videos (flv) in my web application, video files are user generated content, and it is increasing enormously. I would like to serve back the content but without any abuse, for example I dont want some script crawling and downloading all flvs that I got. What methods could I use to prevent this sort of abuse? What should I read to gain knowledge on that matter? Any pointer will be really appreciated Thanks, 来源： https://stackoverflow.com/questions/5140677/secure-way-of-serving

问题 i'm trying following code playing video. public class VidplayerActivity extends Activity { private MediaController mc; String LINK = "http://***/test.3gp"; // 5 mb @Override public void onCreate(Bundle savedInstanceState) { try { super.onCreate(savedInstanceState); setContentView(R.layout.main); VideoView vd = (VideoView) findViewById(R.id.delta); Uri uri = Uri.parse(LINK); mc = new MediaController(this); vd.setMediaController(mc); vd.setVideoURI(uri); vd.start(); } catch(Exception e) {

问题 I am developing an app. that will stream the video recorded from camera and stored as mp4 in sdcard... I know there something called as RTSP which is used for that... Please tell me where to start . .and is there any library that will do this for me... 回答1: I do not understand why you want to stream a local mp4 file, but maybe I misunderstood you problem. RTSP is used for live streaming, but you want to play a local mp4 file. If you want to capture video and save it as mp4 onto a SD card, you

问题 I uploaded a 15MB mp4 file and chose the "Playback via HTML5" option for encoding. It created a new mp4 file that is now 158MB! This is 10x larger in size, why does this happen? In fact, every encoding preset that I choose makes the file size much larger than the original 15MB for the source mp4 file. I need to deliver the video to PC clients that have low bandwidth, so having the file size increase to this magnitude is counter productive. Any advice or insight is really appreciated. 回答1:

问题 I have a web server containing video files and client computers that use VLC to view them. Now, in order to view the video, the client must go on the webpage, right click the direct link, copy it, go to VLC, open the Network Stream option and paste the URL in. I know VLC has a web plugin but I don't want to use that. I am wondering if it is possible, via JavaScript, html, or some other method, to open VLC and copy the video URL to the Network Streaming screen, so my clients simply have to

问题 Trying to run this (example code from developer.android.com) MediaExtractor extractor = new MediaExtractor(); extractor.setDataSource("/sdcard/myvideo.mp4"); Getting "Failed to instantiate extractor" exception on the second line. Tried to place the file in internal storage, tried to access via FileDescriptor, nothing helped. Anyone?? I/MonoDroid( 6802): UNHANDLED EXCEPTION: Java.IO.IOException: Exception of type 'Java.IO.IOException' was thrown. I/MonoDroid( 6802): at Android.Runtime.JNIEnv

问题 I created a video stream recording application that works fine except the recorded FLVs are corrupt a little bit. :) If I open an FLV in VLC player everything is green but getting "clean" when changes occur. And especially at the beginning of the video is breaking up. (I use Red5 1.0) 回答1: For pre-recorded streams, the keyframes are already encoded into the file and they cannot be changed. If you're serving a live stream, the keyframes need to be set in the application that is encoding the