Custom Qt UDPRTP Video Streaming Application derekmolloy. Introduction. In my last two blog entries I have discussed how you can stream video from embedded Linux devices such as the Beaglebone using FFMPEGAVCONV, the V4. L2 Capture program and the Logitech C9. USB Camera with hardware MPEG4H2. In these setups I am using the regular VLC player to receive and display the video streams RTP, UDP unicast and UDP multicast. These posts are available here I would advise that you read those posts first as I am building on them in this post. Qt Serial Port Communication Example Videos' title='Qt Serial Port Communication Example Videos' />So, within the folder CQtlibvlcqtsrcexamples there is a folder called demoplayer, which I am going to use for the rest of this example. Yahoo Lifestyle is your source for style, beauty, and wellness, including health, inspiring stories, and the latest fashion trends. Lithium Ion Batteries Recycling Golf Cart Agm 8 Volt Batteries Lithium Ion Batteries Recycling Interstate Golf Cart Battery Rc2hd Interstate Battery Deep Cycle 8d. Search metadata Search full text of books Search TV captions Search archived web sites Advanced Search. The problem with these solutions is that they are using VLC to display the video and you are effectively without any type of control of the application. For example, If you wished to build a robot navigation system that streams video to the control panel then it would not be possible to modify the VLC user interface very easily. Qt Serial Port Communication Example Videos' title='Qt Serial Port Communication Example Videos' />Hi Zapmaker, First, thanks a lot for developing this, it looks very promising I mentioned GRBLController the other day on the GRBL github page because now and again. So this post covers the area of building your own application to view the video streams. You could try and do this from first principles, but that is much too big a task instead, you are better building on what is currently available. Step 1 VLC using Lib. VLCLib. VLC is an incredibly comprehensive and accessible code library for all of the features that are present in the cross platform VLC multimedia player. It would be great if we can take advantage of this library as it includes all of code necessary to decode video streams, deal with network sockets etc. And we can The description of the functionality available in Lib. VLC is available here http www. You can even download the source code for VLC itself from http www. Im happy to finally publish a first working version of the FreeIMU Magnetometer and Accelerometer Calibration GUI. Currently, it should allow you to visually. Step 1 Download the version of Lib. VLC for your platform. To make life easy I would recommend using the pre built versions. My platform for this post is 6. Windows 7 and I am using the tarball for Windows x. I downloaded and extracted the Windows x. C Qtvlc 2. 0. You can go back a few levels on that URL to check if there are more recent versions and to find the version for your platform. Step 2 Use a Lib. VLC Wrapper. The great thing about open source is that someone has probably tried to do what you are looking to do before and has written some code. The downside is often that solutions are not well packaged and often need customisation to work with recent libraries. There are several examples on how to use Lib. VLC within C and there are also several wrappers that are available for C to help make this process easier. I have tried several, but had particular success with these two The reason I selected both of these is that I was able to download the source code for both and was able to recompile them from source under Windows. Im not sure how useful the first link is under Linux as it is set up for Visual Studio, but the second link uses Qt which means it should be fine under all platforms. For this reason and because I really, really like Qt as an extension to C, giving multi platform user interfaces, threads, sockets, etc. And, it is freely available. For more information on Qt see this link. Step 2 Download the vlc qt library I downloaded the Official VLC Qt Windows SDK and Source Packages, which involved clicking the big green box. I extracted this to a folder in my c Qt directory called libvlc qt. So, the directory looks like. Qtlibvlc qt dir. Volume in drive C has no label. Volume Serial Number is 1. A8. Directory of c Qtlibvlc qt. DIR. 1. 70. DIR. 2. DIR bin. 2. DIR include. DIR lib. 2. DIR src. Files 0 bytes. Dirs 1. Volumeindrive. Chasnolabel. Volume. Serial. Numberis. A8. Directoryofc Qtlibvlc qt. DIR . DIR bin. DIR include. DIR lib. DIR src 6. Dirs 1. 26,8. 26,6. Step 3 Make a few changes to the Demo Project. So, in this folder we now have all of the libraries that are needed for the Qt project. You can see in the lib folder the. And, for example, libvlc qt. Qt. Creator in my case. Qtlibvlc qtlib dir. Volume in drive C has no label. Volume Serial Number is 1. A8. Directory of c Qtlibvlc qtlib. DIR. 2. 70. DIR. 2. DIR pkgconfig. Files 3. Dirs 1. 26,8. 25,7. Volumeindrive. Chasnolabel. Volume. Serial. Numberis. A8. Directoryofc Qtlibvlc qtlib. DIR . DIR pkgconfig 3. Dirs 1. 26,8. 25,7. So, within the folder C Qtlibvlc qtsrcexamples there is a folder called demo player, which I am going to use for the rest of this example. Opening this within Qt. Creator gives the following output as displayed in Figure 1. Figure 1. The demo player project open in Qt. Creator 2. 7. 2 Qt 5. Modify the src. pro file slightly as follows Add widgets to the Qt modules line 4, so that we use the gui component form of Qt. Edit the last two lines to direct LIBS and the INCLUDEPATH to fine the libaries and headers for libvlc qt. My libvlc qt folder is c Qtlibvlc qt. TARGET demo player. TEMPLATE app. QT core gui widgets. SOURCES main. Demo. Player. cpp. HEADERS Demo. Player. h. FORMS Demo. Player. ui. Edit below for custom library location. LIBS LC Qtlibvlc qtlib lvlc qt lvlc qt widgets. INCLUDEPATH C Qtlibvlc qtinclude Edit below for custom library location. LIBS LC Qtlibvlc qtlib lvlc qt lvlc qt widgets. INCLUDEPATHC Qtlibvlc qtinclude. Modify the headers of the. So, my adapted source files look like this Demo. Player. h. include lt QMain. Window. class Demo. Player. class Vlc. Instance. class Vlc. Media. class Vlc. Media. Player. class Demo. Player public QMain. Window. explicit Demo. PlayerQWidget parent 0. Demo. Player. void open. Local. void open. Url. Ui Demo. Player i. Vlc. Instance instance. Vlc. Media media. Vlc. Media. Player player. DEMOPLAYERHclass. Demo. Player public. QMain. Window explicit. Demo. PlayerQWidgetarent0 Demo. Player. cpp. include lt QFile. Dialog. include lt QInput. Dialog. include lt vlc qtCommon. Instance. h. include lt vlc qtMedia. Media. Player. h. Demo. Player. h. Demo. Player. h. Demo. Player Demo. PlayerQWidget arent. QMain. Windowparent,uinew Ui Demo. Player,media0. Uithis. Vlc. InstanceVlc. Common args, this. Vlc. Media. Playerinstance. Video. Widgetui video. Media. Playerplayer. Media. Playerplayer. Volume5. 0. ui seek set. Media. Playerplayer. Open. Local, SIGNALtriggered, this, SLOTopen. Local. connectui action. Open. Url, SIGNALtriggered, this, SLOTopen. Url. connectui action. Pause, SIGNALtriggered, player, SLOTpause. Stop, SIGNALtriggered, player, SLOTstop. Local, SIGNALclicked, this, SLOTopen. Local. connectui open. Url, SIGNALclicked, this, SLOTopen. Url. connectui pause, SIGNALclicked, player, SLOTpause. SIGNALclicked, player, SLOTstop. Demo. Player Demo. Player. delete player. Demo. Player open. Local. QString file. QFile. Dialog get. Open. File. Namethis, trOpen file. QDir home. Path. Multimedia files. Empty. return. Vlc. Mediafile, true, instance. Demo. Player open. Url. QString url. QInput. Dialog get. Textthis, trOpen Url, trEnter the URL you want to play. Empty. return. Vlc. Mediaurl, instance. Common. h include lt vlc qtInstance. Media. h include lt vlc qtMedia. GNU Radio wRealtek RTL2. U, E4. 00. 0 and R8. TPage Sections. Type, sayYour message here. URL on my site and hit enter to leave a comment. You can view them here. An example would be, http superkuh. This is a comment. One-Click Root Zip File.