In the Media menu, choose “Stream” In the Open Media dialog file tab, click “add” and choose the file you want to stream and click “Open” At the bottom, click the “Stream” button; This opens the “Stream Output” dialog showing the source file you have chosen. The high-resolution output – running at 30 frames per second. I will have a video soon available of my blog series on streaming video in place soon. However, some complex operations can only be done from the command line and there are situations in which you don't need or want a GUI. I have a problem with starting more than one UDP multicast stream at the same time. So I found it, but I have exceptions on unmanaged code when I've tried to get components from API. I have everything working as it should but the video hangs up if I move the camera around too much or if make too much of a scene change. Overview of the VideoLAN streaming solution. In a multicast configuration the Encoder/Gateway sends the UDP stream to a multicast group, such as: 238.1.1.1. It seems that either VLC or the axis camera defaults to TCP if it can't find a way to use the UDP connection. I’m 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. Received a complete SETUP response: RTSP/1.0 200 OK CSeq: 5 Date: Fri, Mar 20 2015 19:05:12 GMT Transport: RTP/AVP/TCP;unicast;destination=90.216.75.243;source=192.168.1.52;interleaved=0-1 Session: 25A66787 [00007fec7c00ee98] core decoder debug: looking for decoder module matching "any": 45 … VLC then connects to this group on a specified port and plays the stream(s). Hi, with reference to the demo project, I have tried to create a vlc instance on my QT program. I have the demo up and going now. As a company that specializes in the manufacture and sale of H.264/MPEG-2 video encoders and decoders we often find ourself having to offer technical support to our customers. singleLibVLC = new LibVLC("--verbose=2 --rtsp-mcast"); This gets me using UPD for both copies of stream but each stream is using a different pair of ports. However, my program crashes at this line _instance = new VlcInstance(VlcCommon::args(), this); Please advice. VLC is able to stream all that it can read. I've got a problem trying to use vlc as rtsp-client. Hi! ), Thank you very much for these tutorials. I tried lot's of option but it didn't work. @mfkl, Removed leading spaces for command line options as in. I just copied this example, everything works as expected except the volume slider which is not displayed properly and is not working. I've found some example and used it LibVlc.cs. Opening this within QtCreator gives the following output as displayed in Figure 1. It would not be an exaggeration to say that 99% of all support questions are in fact related to incorrect networking setup. And, it is freely available. any suggestions how to kill this latency? Do I need to install the original file from the website? this is my Vlc Controller class: My libvlc-qt folder is c:\Qt\libvlc-qt\. thank you so much! 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. I am getting the same errors as mentioned by Raja and Johnny! Code: Select all [00007f2f440011f0] x264 encoder: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [00007f2f440011f0] x264 encoder: profile Constrained Baseline, level 3.0, 4:2:0, 8-bit [00007f2f440011f0] x264 encoder: final ratefactor: 38.99 [00007f2f440011f0] x264 encoder: using SAR=1/1 [00007f2f440011f0] x264 encoder: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 … My platform for this post is 64-bit Windows 7 and I am using the tarball for Windows x64 (the latest version at the time of writing is version 2.0.7): ftp://ftp.videolan.org/pub/videolan/vlc/2.0.7/win64/ I downloaded and extracted the Windows x64 tarball to a directory C:\Qt\vlc-2.0.7 in my case. – DVD: 6 to 9 Mbit/s – HD: 10 Mbit/s and up – Files: < 1 Mbit/s – Webcams: < 1 Mbits/s Bitrate terminology – Constant Bitrate (CBR) – Variable Bitrate (VBR) Encoder encodes video frames into I, P or B frames A stream consists of a sequence of I, P or B … I am using qt 5.1.1 on windows. In VLC 1.1.11 media -> straming \/ capture device tab - drop capture mode to: desktop \/ set 25 fps \/ pressed "stream" button 1st option window: source was "screen://" - i press next button 2nd option window: destination was setted to udp and pressed to the "add" button -> … So, in Figure 7 I connect to my unicast UDP stream (see previous posts) by entering the address: udp://@:1234 into the “Open URL” pop-up dialog box. Starting one works fine with this code: Code: Select all. Make sure that the documentation matches the LibVLC version. and how to install. Transcode a stream to Ogg Vorbis with 2 channels at 128kbps and 44100Hz and save it as foobar.ogg: % vlc -I dummy -vvv input_stream --sout "#transcode{vcodec=none,acodec=vorb,ab=128,channels=2,samplerate=44100}:file{dst=foobar.ogg}" Transcode the input stream and send it to a multicast IP address with the associated SAP announce: … ROS libvlc wrapper. 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. If you want to use TCP you have to set that option in your ArrayList that you feed to your own libvlc. Click Next to set destination. vlc -vvv video1.mp4 --sout=#transcode{vcodec=h264,vb=800,acodec=mpga,ab=128,channels=2,samplerate=44100}:udp{mux=ts,dst=224.0.0.1:1234} But when I start a 2nd vlc instance with: Code: Select all. The project uses two different Transport Layer Protocols(TCP/IP & UDP) for communicating different data.And uses two way communication for fetching radio list(TCP) and other for streaming service(UDP). I use a libvlcnet c sharp wrapper that play a stream (udp). The plugins folder is very important as it contains further dlls that are used by your build. //QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8")); Step 5 – Ensuring all Libraries are Present and Accessible, Driving a 8×8 LED Matrix using the Arduino, UDP Unicast and Multicast Streaming Video using the Beaglebone Black, http://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc.html, http://www.videolan.org/vlc/download-sources.html, ftp://ftp.videolan.org/pub/videolan/vlc/2.0.7/win64/, VLC-Qt – “Quickly create a powerful media player”, Writing a Linux Kernel Module — Part 3: Buttons and LEDs, Writing a Linux Kernel Module — Part 2: A Character Device, Writing a Linux Kernel Module — Part 1: Introduction, http://sourceforge.net/projects/vlc-qt/files/, Resize a VirtualBox guest Linux VDI Disk under Windows Host, Custom Video Streaming Player using LibVLC and Qt, Edit the last two lines to direct LIBS and the INCLUDEPATH to fine the libaries and headers for libvlc-qt. In my scenario, I am receiving raw bytes from UDP (a stream of strings) and then again I am writing that stream to another UDP socket where VLC is listening. Finally, I press the button on the bottom left-hand side (I think it is a hammer) and as you can see in Figure 4. I copied these from my folder C:\Qt\vlc-2.0.7 which I discussed in Step 1. The downside is often that solutions are not well packaged and often need customisation to work with recent libraries. Ask vlc to play rtsp url. These posts are available here: I would advise that you read those posts first as I am building on them in this post. The description of the functionality available in LibVLC is available here: http://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc.html. VLC needs to be configured to lisiten for incoming streams on a specific port. See Step 5. This is his personal blog site. I amazed with the research you made to create this actual post extraordinary. VLC is widely used by consumers and professionals alike. VLS (VideoLAN Server), which can stream MPEG-1, MPEG-2 and MPEG-4 files, DVDs, digital satellite channels, digital terrestial television channels and live videos on … I covered this in my video series on Qt and the Beaglebone. Step 1: Download the version of LibVLC for your platform. I downloaded source version VLC-Qt 0.9.0 and use cmake 3.1.0 rc1 gui to complie but not work. It will eventually correct itself but not for about 10 seconds or so. At this point you should have a successful build, but it is unlikely that your application will run unless you have made all of the run time dlls available (under Windows) for your application. I investigated a little, and found what is blocking when calling libvlc_media_player_stop(?). I've found some example Example, but it does not works, because needed old version of library 0.8.6. I try to play UDP stream by LibVLC in Android Box but I have some problem. The problem is simple. In these setups I am using the regular VLC player to receive and display the video streams (RTP, UDP unicast and UDP multicast). For more information on Qt – see this link. You can even download the source code for VLC itself from: http://www.videolan.org/vlc/download-sources.html. Have you ever thought "I can easily show this camera stream in vlc, why is there no ROS driver for it?". I need to stream a desktop capture (plus audio) from a PC to another in an mpeg2 trasport stream, but really cannot obtain it. If you click on the DemoPlayer.ui (under forms in the project) you will get the forms editor, which allows you to make minor modifications to the project in order to check that you have achieved a custom build. It also integrates associated documentation, datasheets and tools to allow you to get the best from the video series. For those not familiar with VLC (VideoLan), it is a free multimedia player supporting most file and streaming media formats. Thanks for the information. Figure 8. Note, it will not run yet! I’ve been playing with settings for days. Thanks. If you have any further questions please contact us at sales@advanceddigital.ca. Put your Management and Streaming Ports on Different Networks, Using VLC with Multicast and Unicast UDP Streams, Introduction to FFMPEG for Broadcast Engineers, Put Your Existing UDP/RTP Encoders on the Internet. If you wish to replace this image QtCreator has some very nice IDE features, such as editing the user interface (See Figure 3). Great guide! Generate a .lib for using libVLC on Windows(before libVLC 2.1.0) its working. Here is the complete description of VLC's command line and how to use it. But when i run the demo-player.exe the output is : “Starting C:\Qt\libvlc-qt\src\examples\build-demo-player-Desktop_Qt_5_5_1_MinGW_32bit-Debug\src\debug\demo-player.exe… QWidget: Must construct a QApplication before a QWidget Invalid parameter passed to C runtime function. C:\Qt\libvlc-qt\src\examples\build-demo-player-Desktop_Qt_5_5_1_MinGW_32bit-Debug\src\debug\demo-player.exe exited with code 3”. So, the directory looks like: So, in this folder we now have all of the libraries that are needed for the Qt project. In my case everything is working fine. So, that is it. UDP RTP – Example: ... – MPEG-4 stream: 0.5 to 4 Mbit/s – MPEG-2 stream: 3 to 4 Mbit/s from a satellite card, digital television card, MPEG-2 encoding card. The Final Running Beaglebone Video Streamer. This module saves the stream to a file or sends it over a network, after having muxedit. Setting the Windows Environment Variable PATH. According to the VLC streaming matrix, UDP limits the available containers to MPEG-TS and Raw. Do contact if u ever in town (SG). I have a hybrid setup for this project and there are good reasons for this that I don’t want to go into here. The "Stream Output" wizard dialog will open. The description of the functionality available in LibVLC is available here: http://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc.html. Invalid parameter passed to C runtime function. When it is I will link everything together. vlc doesn't "see" udp stream after rtsp changing scale. This forum is about all development around libVLC. 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. OPTIONS rtsp://192.168.0.49:554/11 RTSP/1.0 CSeq: 2 User-Agent: LibVLC/2.2.8 (LIVE555 Streaming Media v2016.02.22) RTSP/1.0 200 OK CSeq: 2 Server: Rtsp Server Public: OPTIONS, DESCRIBE, SETUP, PLAY, TEARDOWN, SET_PARAMETER DESCRIBE rtsp://192.168.0.49:554/11 RTSP/1.0 CSeq: 3 User-Agent: LibVLC/2.2.8 (LIVE555 Streaming Media v2016.02.22) Accept: application/sdp RTSP/1.0 401 … 2 Then i try to rewind. my project is stalled half way because i cant proceed to next parts. How can i fix it? VLC then connects to this group on a specified port and plays the stream(s). 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. Thanks, But when i run the demo-player.exe the output is : “Starting C:\Qt\libvlc-qt\src\examples\build-demo-player-Desktop_Qt_5_5_1_MinGW_32bit-Debug\src\debug\demo-player.exe… QWidget: Must construct a QApplication before a QWidget Invalid parameter passed to C runtime function. The demo-player project open in QtCreator 2.7.2 (Qt 5.1.0 32-bit). Ahh missed the part where you recompiled vlc-qt from source. Figure 3. Conversion: The transcoding options box will appear. On the GNU Radio side, I created a simple flow graph where an UDP source is connected to an UDP sink. Everything is nice. – Copy the libraries and plugins directory from your vlc download into the build folder (axvlc.dll, libvlc.dll, libvlccore.dll and npvlc.dll). Please refer to the Doxygen documentation, which is the reference documentation. So to do this I went to Start -> Control Panel\System and Security\System -> “Advanced system settings” -> Environment Variables and then under “System variables” I added C:\Qt\5.1.0\mingw48_32\bin to the end of the variable value, as illustrated in Figure 5. My output is captured in Figure 6. Immensely useful and saves days of work at least. C# (CSharp) Vlc - 23 examples found. It sends correct requests rtsp-setup, rtsp-play etc and starts playback. For example I need to display the frame rate and I cant. 3. Can someone please upload the project demo-player “C:\Qt\libvlc-qt\src\examples\ there is a folder called demo-player”. In “Destinations”, choose “RTP /MPEG Transport Stream” and click the “Add” button; In the “Address” box, enter the required … 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 the multicast streaming, the address used is usually from the range of local administrative multicast IP addresses (e.g. I’m looking for a line-scan camera that can run at 200 fps (lines) or faster. 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. and i have being searching for a answer for almost 2 days. In a unicast configuration the encoder or the IPTV Gateway/Server is sending a UDP stream directly to the computer that is running the VLC. I use libvlc in an Android application, and I experience a deadlock: libvlc.stop() does never return in some cases. Use one of the following command lines: This Live Streaming service can be implemented in any kind of LAN(WLAN/Ethernet) provided the server and clients are in the same network. You can even downl… I’m building a digital FPV system: HD camera in the multicopter, professional long-range WiFi link, with display on a laptop. C:\Qt\libvlc-qt\src\examples\build-demo-player-Desktop_Qt_5_5_1_MinGW_32bit-Debug\src\debug\demo-player.exe exited with code 3” How can i fix it? I would like to replace the laptop by a Beaglebone black. Figure 1. Save all changes after the minor edit (File – Save all). In some HD channels video lagging and it stop but the sound is okay and continue. Configure the details for the chosen streaming protocol. Press on the "Next" button to go to the "Destination Setup" area. Good evening sir! I am using Olimex-A13-Olinuxino-Micro board with debian OS (No GUI)… Now, I have a question that, If I go through above steps, Can I succeed with that.??? I am able to receive the stream videos in my program, The source code for receiving the streaming video is given below For Eg: in the script file streamVideoRTP, can the line “./capture -F -o -c0|avconv -re -i – -vcodec copy -f rtp rtp://192.168.1.4:1234” be modified in someway to achieve this? I extracted this to a folder in my c:\Qt directory called libvlc-qt. Otherwise, I need to recompile and I have compilation issues. You can see that the window now has the title “Beaglebone Video Streamer”. You need to be quite comfortable with command lineusage to use this. [06962300] stream_out_transcode stream out error: cannot create chain [069706b0] main stream output error: stream chain failed for `transcode{vcodec=h264,acodec=none,vb=2000,width=1920,height=1080}' [0696c7a8] main input error: cannot start stream output instance, aborting. You can see my configuration in Figure 2. Receive a stream with VLC Receive an unicast stream % vlc -vvv rtp:// Receive a multicast stream % vlc -vvv rtp://@239.255.12.42 where 239.255.12.42 is the multicast IP address you want to join.. I downloaded the “Official VLC-Qt Windows SDK and Source Packages” (http://sourceforge.net/projects/vlc-qt/files/), when I extracted, the folder isn’t contain the sub-folder /lib, /include, /bin, /src like you. In most cases the first thing we do is ask the customer to confirm that their setup works with VLC, because if it works with VLC then their issue is most likely not IP networking related. 239.x.x.x); but you can … You can add the other directories to your path here, but I am going to just place the dlls in the build folder. Copyright 2020 AdvancedDigital Inc. All Rights Reserved. In my case I am going to change the frame title to “Beaglebone Video Streamer”. This video describes how we can stream media using VLC Media player over the RTP Protocol. debug/DemoPlayer.o: In function ZN10DemoPlayerC2EP7QWidget': D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:37: undefined reference to _imp___ZN9VlcCommon4argsEv’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:37: undefined reference to _imp___ZN11VlcInstanceC1ERK11QStringListP7QObject' D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:38: undefined reference to _imp___ZN14VlcMediaPlayerC1EP11VlcInstance’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:39: undefined reference to _imp___ZN14VlcMediaPlayer14setVideoWidgetEP16VlcVideoDelegate' D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:41: undefined reference to _imp___ZN14VlcWidgetVideo14setMediaPlayerEP14VlcMediaPlayer’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:42: undefined reference to _imp___ZN21VlcWidgetVolumeSlider14setMediaPlayerEP14VlcMediaPlayer' D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:43: undefined reference to _imp___ZN21VlcWidgetVolumeSlider9setVolumeEi’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:44: undefined reference to _imp___ZN13VlcWidgetSeek14setMediaPlayerEP14VlcMediaPlayer' debug/DemoPlayer.o: In function ZN10DemoPlayer9openLocalEv’: D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:74: undefined reference to _imp___ZN8VlcMediaC1ERK7QStringbP11VlcInstance' D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:76: undefined reference to _imp___ZN14VlcMediaPlayer4openEP8VlcMedia’ debug/DemoPlayer.o: In function ZN10DemoPlayer7openUrlEv': D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:87: undefined reference to _imp___ZN8VlcMediaC1ERK7QStringP11VlcInstance’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/../../demo-player/src/DemoPlayer.cpp:89: undefined reference to _imp___ZN14VlcMediaPlayer4openEP8VlcMedia' debug/DemoPlayer.o: In function ZN13Ui_DemoPlayer7setupUiEP11QMainWindow’: D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/./ui_DemoPlayer.h:81: undefined reference to _imp___ZN14VlcWidgetVideoC1EP7QWidget' D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/./ui_DemoPlayer.h:97: undefined reference to _imp___ZN21VlcWidgetVolumeSliderC1EP7QWidget’ D:\NGFMS\My_Stuff\libvlc-qt_0.9.0_win64_msvc2012\examples\build-demo-player-Desktop_Qt_5_2_1_MinGW_32bit-Debug\src/./ui_DemoPlayer.h:107: undefined reference to `_imp___ZN13VlcWidgetSeekC1EP7QWidget’ collect2.exe: error: ld returned 1 exit status, How to solve this error..I am using Qt 5.2.1.