video

How can I validate a video file from a script?

I have a server with lots of video files. After a restore, I noticed that the checksum of a couple of files changed. Since I don't have checksums for all files, I wanted write a script to verify the file integrity. It's simple for archives (tar t, unzip -t, rar t, etc) or images (convert image.jpg /tmp/test.png). Which options do I need...

How to detect Video-off.

Hi. I'm trying to detect video-off by "Power Option" - "Turn off monitor" configuration. When system goes sleeping, it broadcasts WM_POWERBROADCAST. Is there any event broadcasted when monitor goes off? Or is there any settings which I should check periodically? TIA. ...

How to program a delay of video presentation across shared monitors?

I am looking for a decent programmatic approach to delivering the illusion of "riding in a van". Here is the synopsis: I have a friend who is opening up a bar in San Francisco with a room interior designed to be like the inside of a van (picture the inside of the Scooby Doo Mystery Machine) . Set into the walls are “windows” and behind ...

split video stream MPEGTS(H264) into file chunks under unix

Q: How to split MPEGTS(H264) video stream into file chunks? Searching the way of splitting MPEGTS video stream encoded to H264 into accurate file chunks. The challenge is that the stream need to be saved 24/7 and no data should be lost. Thinking about split(1), but there is a problem with video frames. If video frame will be cut in the...

Can you recommend an effective and cheap CDN for video streaming?

I am looking for a streaming CDN recommendation. Cost and performance are my chief concerns. Video viewers may be all over the globe, with the, US, Europe, Russia and South America topping the list (yes, I know that leaves out a little :-). I saw the following list of streaming CDNs in LinkedIn: Akamai, BitGravity, EdgeCast, Highwinds,...

Screen recording is not very clear

Hello everyone, I am using Windows Media Encoder 9 on Windows Vista + VSTS 2008 + C#. And I find the recorded video quality is not very good, the major issue is the details are not clear enough -- for example, when list a folder in explorer containing a lot of files (file names are not very clear), when quickly scroll-up/scroll-down a f...

Where can I get lecture of database managment system?

Where can I get lecture of database managment system? I need both the introduction and implementation video lectures. Thanks. ...

openCV cvCreateVideoWriter always returns null

I am trying to save a video file with openCV under Mandriva Linux 2009.1. Unfortunately cvCreateVideoWriter always returns null although I could see and modify both and mpeg fiels, in other words cvCaptureFromCam, cvCaptureFromAvi, cvRetrieveFrame is working. I tried all the possible codecs from this tutorial and this codec page. I also...

Papervision: MovieMaterial on a Collada object

Is it possible to put a MovieMaterial on an imported Collada object in Papervision? I can't find anything on the matter on the internet and anything I try on my own is in vain... Thank you ...

making a video play continuously even when changing html page with javascript and without frames

I would like to have a video play continuouly even when html page changes.The new google videos page works this way. My page utilizes javascript. ...

Is it possible to synchronize videos across multiple computers using WPF?

Is it possible to synchronize videos running in a WPF application across two or more computers? Synchronizing several videos running on the same machine seems to work well using the ParallelTimeline class and MediaTimelines for each video instance, but I haven’t figure out a way to do this across different computers, which if possible, w...

Luster, Gluster or MogileFS?? for video storage, encoding and streaming

So many options and so little time to test them all... I wonder if someone has experiences with distributed file systems for video streaming and storage/encoding. I have a lot of huge video files (50GB to 250GB) that I need to store somewhere, be able to encode them to mp4 and stream them from several Adobe FMS servers. The only way to ...

Can v4l2 be used to read audio and video from the same device?

I have a capture card that captures SDI video with embedded audio. I have source code for a Linux driver, which I am trying to enhance to add video4linux2 support. My changes are based on the vivi example. The problem I've come up against is that all the example I can find deal with only video or only audio. Even on the client side, e...

should embedding video in home page slow down the page?

If I embed a video demonstrating my application in my home page, will it slow down the page to a considerable amount? I tried, and checked that it takes almost 1 sec, to load the preview of the video. And as the video stream will not be downloaded until, the video is clicked, the total video do not have to get downloaded. Is it recomme...

Create Video, Frame by frame, from .Net

I have a .Net application which renders graphics using GDI+ and/or XNA and I want to record the frames directly into a video (preferably an AVI, where I can include a codec like xvid etc). I've tried many of the solutions out there, and run into show stoppers with all of them. All of the FFMPeg based libs seem to be dedicated to transc...

Multimedia framework for video playback in a GUI application?

Some time ago I started a project in which I needed to do the following things: Play videos: In any common format (avi, mpeg, xvid, etc.) Be able to pause and reposition the stream programmatically. Be able to set the playback speed (not mandatory, but desirable) Let me paint custom graphics (kept in sync with the video) over the pla...

Problem fetching video data from server only in browser plugin

I have a problem with a server, written in Java, running on Tomcat, serving video files. I didn't write the code and have very little familiarity with the libraries involved in this problem, so any ideas to pursue would be much appreciated :) The videos in question work fine when you save them to disk from your browser and then play th...

What are the best Google Tech Talks?

What are the most interesting programming-related Google Tech Talks? ...

Where should video be hosted to stream for an iphone app

Looking for a way to not have a publicly hosted video be used in an iphone application. Youttube or Vimeo seem like the obvious choices for free hosting of video, but the public nature is discouraging. Want to charge for video content, so making it free to all defeats the purpose. Any ideas? ...

Convert video format to Flash Video automatically

I need to allow web site users to upload videos to my web site in various common formats. From these I need to convert them to Flash video, and also limit their lengths and size. I need to do this automatically as part of the web site processing. Is there some simple tool that will allow me to do this? If not, can you point me in a dire...