In SharePoint 2013 I want to have a web part with 3 videos. When the user click on one of them,
the player will open in a new window. Videos must be streamed in order to preserve bandwidth.
I started learning about the media web part, but I'm still pretty new to SharePoint 2013 so I don't want to spend time on a solution that doesn't work in the end.
If you have any ideas on what solution would best fit my scenario, that would help me greatly.
Thank you.
I have limited experience with video libraries in SharePoint 2013, but here is what has worked for me:
Quicktime formats open in a new window.
WMV format will play in the browser.
I have had a lot of problems with just uploading mp4 files (never finishes the upload, regardless of file size), and haven't tried out the others.
Maybe this will help someone.
The player from Sharepoint 2013 supports only certain formats(for HTML5 : asf, avi, mpg, mp3, mp4, ogg, ogv, webm, wma, wmv ; classic Silverlight Media Web Part supports: asf, mp3, mp4, wma, wmv).
I had to support swf files so I searched for other options. I found this one https://code.google.com/p/youplayer/downloads/detail?name=mediaplayer.swf and it works for me.
Related
In my C++ application I have video image frames coming from a web camera.
I wish to send those image frames down to a HTML5 video tag element for live video playing from the camera. How can I do this?
For a starting point you are going to want to look into WebM and H.264/MPEG-4 AVC. Both of these technologies are used as HTML5 media streams. It use to be that FireFox only supported WebM while Safari and Chrome both supported H.264. I am not sure about their current states, but you will probably have to implement both.
Your C++ will then have to implement a web server that can stream these formats on the fly. Which may require significant work. If you choose this route this Microsoft document may be of some use. Also, the WebM page has developer documentation. It is possible that H.264 must be licensed for a cost. WebM allows royalty free usage.
If I am not mistaken neither of these formats has to be completely downloaded in order to work. So you would just have to encode and flush the current frame you have over and over again.
Then as far as the video tag in HTML5 you just have to provide it the URLS your C++ server will respond to. Here is some documentation on that. Though, you may want to see if there is some service to mirror these streams as not to overload your application.
An easier way to stream your webcam could be simply to use FFMPEG.
Another usefull document can be found at:
http://www.cecs.uci.edu/~papers/aspdac06/pdf/p736_7D-1.pdf
I am no expert, but I hope that at least helps you get your start.
I'm trying to make a multimedia database system using Qt. I'm using QMultimedia to play back videos in a QVideoWidget.
The following is the code I am using to play a video file in a QVideo Widget:
mMediaPlayer = new QMediaPlayer();
mMediaPlaylist = new QMediaPlaylist();
QMediaContent content(QMediaResource())
mMediaPlaylist->addMedia(QUrl::fromLocalFile(QDir(QString("data")).absoluteFilePath(QString("%1.dat").arg(mMedia.GetUID()))));
mMediaPlayer->setPlaylist(mMediaPlaylist);
mVideoWidget = new QVideoWidget();
mMediaPlayer->setVideoOutput(mVideoWidget);
this->setCentralWidget(mVideoWidget);
mVideoWidget->show();
mMediaPlayer->play();
Basically, it plays a file called 1.dat for example, which is just a renamed video file (video.mp4 for example). However, playing the video never works, and the following error is produced:
DirectShowPlayerService::doRender: Unresolved error code 80040266
With some google searching, I found that this error is because QMultimedia doesn't have the required codecs/filters to play the format of the video. I've tried converting my videos to many different formats using ffmpeg, while trying formats specified at Supported Formats in DirectShow and Supported Media Formats in Media Foundation. I've also tried installing Directshow Filters for Ogg Vorbis, Speex, Theora, FLAC, and WebM, and converting my video to theora/vorbis in an ogg container. Still no go.
I should note that I did manage to play one mpg file, so I do know QMultimedia is working. But I tried converting another video to mimic the properties of that mpg file, and it didn't seem to work, so it seems QMultimedia is extremely specific in what formats it supports.
What system is QMultimedia using for its backend decoding? How can I find out what types of encodings and containers it supports? Is it possible to write my own decoder in Qt?
Thanks
this document describe features supported by QMultimedia backends. Render to widget is not supported now.
I recommend to use another library for encoding/decoding multimedia(f.e. ffmpeg) - QMultimedia now is not stable and I think that correct work only examples from documentation :(
I'm a BSc student and im working on my final year project
i have planned to create a security system using OpenCV with C++ using OOP using Ms visual Studio 2012, so far i have managed to capture video from multiple webcams and even record the video separately
However I realize that video only gets saved ones the application is closed. which leads me to another problem, because i would like to stream the recorded video live to a website.
Questions so far
1. Need to continuously record video and save to file
1. Need to Add time and date info (Time Stamp each frame)
Any form of help is much appreciated (code , links, or advice )
thanks in advance
I am just starting to learn DirectShow with C++. I need to use DirectShow to record the audio and write it to a WAV file on the disk. I heard from other people that Win 7 does not allow for rendering audio using DirectShow.
In addition, I would like to know how should I start with recoding audio using DirectShow with C++? If there is sample source, it would be great.
Thanks in advance.
I think you may have misunderstood these other people. Windows Media Foundation is aimed to be the successor of DirectShow, but DirectShow is still a very valid technology on Windows 7.
The easiest thing to accomplish what you want to do, is to get it right using the GraphEdit tool first ( I assume you want to do this programmatically).
Create a graph that contains your audio device, a WavDestFilter, and a file writer.
Source -> WavDest -> File Writer
Play the graph. Stop the graph and you should have created a .wav file with the recorded audio. If you can get this right, then you need to do the whole thing programmatically.
There are a couple of samples in the SDK that show you how to programmatically add filters to a graph and connect them, that should enable you to get started.
WRT the WavDestFilter, IIRC it might not be in all versions of the SDK, you'll have to find an appropriate one. You also need to build it, and regsvr32 it, so that it will show up in your list of available filters in GraphEdit.
If this all seems a bit much, I would read through the DirectShow documentation on MSDN to at least get an overview of DirectShow.
I've been wanting to play around with audio parsing for a while now but I haven't really been able to find the correct library for what I want to do.
I basically just want to parse through a sound file and get amplitudes/frequencies and other relevant information at certain times during the song (like every 10 ms or so) so I can graph the data for example where the song speeds up a lot and where it gets really loud.
I've looked at OpenAL quite a bit but it doesn't look like it provides this ability, other than that I have not had much luck with finding out where to start. If anyone has done this or used a library which can do this a point in the right direction would be greatly appreciated. Thanks!
For parsing and decoding audio files I had good results with libsndfile, which runs on Windows/OSX/Linux and is open source (LGPL license). This library does not support mp3 (the author wants to avoid licensing issues), but it does support FLAC and Ogg/Vorbis.
If working with closed source libraries is not a problem for you, then an interesting option could be the Quicktime SDK from Apple. This SDK is available for OSX and Windows and is free for registered developers (you can register as an Apple developer for free as well). With the QT SDK you can parse all the file formats that the Quicktime Player supports, and that includes .mp3. The SDK gives you access to all the codecs installed by QuickTime, so you can read .mp3 files and have them decoded to PCM on the fly. Note that to use this SDK you have to have the free QuickTime Player installed.
As far as signal processing libraries I honestly can't recommend any, as I have written my own functions (for speech recognition, in case you are curious). There are a few open source projects that seem interesting listed in this page.
I recommend that you start simple, for example working on analyzing amplitude data, which is readily available from the PCM samples without having to do any processing. Being able to visualize the data is very useful, I have found Audacity to be an excellent visualization tool, and since it is open source you can build your own tests inside it.
Good luck!