All Questions
189
questions
38
votes
1
answer
3k
views
GStreamer encountered a general stream error in Qt5 raspberry pi
I'm trying to play a video using QtMediaPlayer in Raspberry pi 2 B. The source code is as follows:
QMediaPlayer *media;
QVideoWidget *video;
...
...
media = new QMediaPlayer(parent);
video = new ...
- 1,135
17
votes
4
answers
34k
views
GStreamer installation is missing a plug-in
I hope that someone can help with this problem, been searching for a solution for the past 2 days.
To describe the problem in short: I'm trying to make a simple qt5.7 application that will stream an ...
- 195
12
votes
3
answers
18k
views
How to implement a video widget in Qt that builds upon GStreamer?
I want to use Qt to create a simple GUI application that can play a local video file. I could use Phonon which does all the work behind the scenes, but I need to have a little more control. I have ...
- 35.1k
12
votes
4
answers
7k
views
g_main_loop_run blocks the Qthread and does not allow to stop video
I have created a separate class for gstreamer to stream videos.
This class runs on separate thread by using moveToThread().
I am using Qt5.5 for development.
When I issue startcommand on main thread , ...
- 2,180
8
votes
2
answers
17k
views
Play RTP video stream using Qt?
I want to create a Qt widget that can play incoming RTP streams where the video is encoded as H264 and contains no audio.
My basic plan for implementation is this:
Create a Phonon MediaSource object ...
- 35.1k
7
votes
3
answers
9k
views
GStreamer Qt WINDOWS
There is lot's of information about configuring .pro file for Qt in linux to run GStreamer. But it looks so difficult to do the same in WINDOWS. I downloaded Gst from their official site and ran an ...
- 85
6
votes
4
answers
18k
views
To connect Gstreamer with Qt in order to play a gstreamer video in the Qt Widget
I tried using phonon to play the video but could not succeed. Off-late came to know through the Qt forums that even the latest version of Qt does not support phonon. That's when I started using ...
- 61
6
votes
0
answers
366
views
Where are the Mac Qt5.7 pkg-config files?
I'm getting this error trying to build gst-plugins-bad against Qt5.7:
Package Qt5Core was not found in the pkg-config search path.
Perhaps you should add the directory containing `Qt5Core.pc'
to the ...
- 2,792
5
votes
1
answer
7k
views
How to use use the gst_app_src_push_buffer() manually with custom event
I want to use the gstreamer's appsrc element to send an images to the gstreamer's pipeline as video stream. I look on the appsrc example, where are used the time-based streaming format. Where each ...
- 527
5
votes
3
answers
1k
views
Qt #define "signals" clashes with GStreamer (gst)
Qt, which seems to name everything else with an initial Q, does this: #define signals signals in qobjectdefs.h.
However, GStream, not naturally, does not imagine signals to be a reserved word and ...
5
votes
1
answer
6k
views
symbol loopkup error: libgobject-2.0.so.0:undefined symbol: g_bytes_unref
I am trying to compile a gstreamer rtsp server under ubuntu 12.10 using Qt creator.
The code successfully compiled but give me this exception and the program exit:
symbol loopkup error: libgobject-...
- 1,697
4
votes
1
answer
5k
views
How to add a gstreamer 1.0 video element to a qt5 app
I'm trying to play video in a Qt widget on linux.
How to implement a video widget in Qt that builds upon GStreamer?
The above question is pretty close to what I want, but 6 years old. QApplication:...
- 2,792
4
votes
2
answers
856
views
What is the best way to manage multiplatform video stream using Python?
I have this question in my head for over a year now. And I guess you guys may have the answer.
In some Python GUI app, I need to display a video stream.
I need to record some part of this stream to ...
- 17.7k
4
votes
0
answers
2k
views
recording video to file with QML
I am using the Qt Multimedia framework and I can display video on my window just fine using QML and the Camera module as follows:
ControlView {
id: recorderWindow
color: "#000000"
border....
- 10.8k
4
votes
1
answer
2k
views
Overlaying widgets on gstreamer video in qt
I have connected gstreamer to the QWidget using gst_x_overlay_set_xwindow_id(),and getting the video on the QWidget.How can we overlay another widget(e.g. pushbutton,combobox) on top of this video ...
3
votes
1
answer
5k
views
How to include a gstreamer sink in a QML VideoItem?
I'm trying to integrate a gsrtreamer video in a QT app using QML.
I've begun with the example qmlplayer2 which uses a distant video :
player->setUri(QLatin1Literal("http://download.blender.org/...
- 338
3
votes
2
answers
899
views
Error accessing GStreamer Library in Qt C++ - Program excited with code 0xc0000135 when Debugging
I want to use gstreamer library for video programming and I read that Qt5.5.0 provided support for gstreamer-1.0, which is the library I use. I downloaded firstly version 1.0.7, but I got the ...
- 73
3
votes
0
answers
542
views
How to play a Spotify track without libspotify?
I'm currently writing an embedded C++/Qt/GStreamer application. I don't want to use the deprecated libspotify. I only see search info in the web API but no way to actually play tracks.
Does anyone ...
- 39
3
votes
2
answers
1k
views
GStreamer error in Qt5
When I try to launch my videowidget application it gives me the error:
(videowidget:9305): GLib-GObject-WARNING **: cannot register existing type 'GstObject'
(videowidget:9305): GLib-CRITICAL **: ...
- 177
3
votes
1
answer
1k
views
gthread.h size of array is negative
I have following configuration in my .pro file
INCLUDEPATH += /home/vickey/ossbuild-read-only/Shared/Build/Linux/x86/include/glib-2.0/
CONFIG += link_pkgconfig
PKGCONFIG += gstreamer-0.10
LIBS ...
- 12.9k
2
votes
2
answers
5k
views
Qt+GStreamer: How to take a snapshot while playing live video stream
I've developed a video player based on Qt and QtGstreamer. It is used to play live streams (RTSP). I have to add the possibility for the user to take snapshots while he is playing a live stream ...
- 147
2
votes
1
answer
4k
views
Gstreamer. Undefined reference to `gst_video_overlay_set_window_handle'
I am trying to use gstreamer and Qt5 together. Just the simple app with src->sink - for displaying something on the screen.
Here is an example of source code:
#include <glib.h>
#include <...
- 75
2
votes
1
answer
2k
views
gstreamermm and Qt compilation error
I am new to Qt and I am trying to run basic gstreamermm example with Qt. When I include gstreamermm.h in main.cpp of qt, I get compilation error. I can not understand what does that error says. I am ...
- 75
2
votes
1
answer
6k
views
Using Gstreamer 1.0 with Qt Multimedia
According to the latest docs for Qt 5.5, Gstreamer 1.0 is supported via Qt Multimedia. However, I can't seem to find much more information about it (the guy from this post seems to be in the same boat)...
- 5,018
2
votes
2
answers
379
views
Getting Slow Motion Video while using QML Media Player
I have been trying to use QML MediaPlayer. So, I start testing the built-in example in Qt Creator (Media Player Example).
After doing some more tests with videos having fps more than 60 (e.g. 120 or ...
- 1,218
2
votes
3
answers
5k
views
Qt adding library gstreamer-1.0
I am making a project, dependent on gstreamer-1.0, glib-2.0 and gobject-2.0.
Building in console and in VSCode works fine, but when i get to Qt, i receive the following error message:
:error: cannot ...
- 71
2
votes
1
answer
122
views
QtGStreamer compile-time error in header due to C++11 standard?
I am trying to use QtGStreamer with MS Visual Studio 2015's C++ compiler, which defaults to the C++11 standard (more or less).
The header refpointer.h contains the following:
template <class T, ...
- 1,511
2
votes
1
answer
804
views
QT/Phonon Video Recording
I want to do the Video Recording in QT Phonon media framework.Has Qt/KDE's Phonon media framework abstraction implemented Video recording? If Phonon does not implemented then how to add functionality(...
2
votes
1
answer
826
views
QtGstreamer camerabin2 usage
I'm working on olimex a13 board with just eglfs i.e, no windowing system. Because of this Qt Multimedia stuff video and camera aren't working as Qt uses Gstreamer which in turn needs X. So I'm using ...
- 1,937
2
votes
1
answer
3k
views
gstreamer code failed to link all GST ELEMENTS
Ubuntu 14.04
Gstreamer 0.10
Code Sdk : Qt .
I am quite new to Gstreamer. when I use gst-launch tool on my terminal I can successfully see camera attached to my workstation capture &streams videos....
- 2,180
2
votes
1
answer
2k
views
Live streaming video in Qt
I am making a "simple" software that can streaming video (without audio) from pc to pc. I am a newbie in Qt so I have some questions:
Does Qt 5.1 have any class to Encode and Decode video?
If not, ...
- 123
2
votes
1
answer
2k
views
Gstreamer and Taglib unresolved external symbol
I am trying to create a small Gstreamer-Qt based program in Windows using msvc and building it with waf.I am getting this linker error even through i have linked all library required.
GSTEngine.cpp.4....
user671253
2
votes
2
answers
4k
views
QtMultimedia failed to play audio on linux: GStreamer; Unable to play - ""
I'm running Ubuntu 10.10, I successfully installed Qt 4.7.3 SDK (using qt online installer, not from packages) and compiled QtMobility multimedia module so my little test code compile:
QMediaPlayer ...
- 1,114
2
votes
0
answers
717
views
Recommended way for using GStreamer with Qt and QML?
Because of display up to 4 UDP/RTP streams in different modes (single / dual / quad) I first decided to use GStreamer. It works but it is not easy to handle and I can not switch between viewing modes ...
- 53
2
votes
1
answer
442
views
Why gst_deinit freeze application?
OS: Windows 10
Gstreamer: 1.16.2
Qt: 5.14.0
I have application in QT, which use gstreamer. Now I would like to many times init and deinit gstreamer using:
gst_init(NULL, NULL) and gst_deinit().
When I ...
- 101
2
votes
0
answers
166
views
Use gstreamer gtk signaling in QT application
Hi i am writing a small Qt Application and part of that would be a webRTC video stream for which planned to use Gstreamer.
This is where i can into problems.
Naturally my app is a QtApplication and is ...
2
votes
1
answer
6k
views
How to display stream video frames in Qt app using Gstreamer receive from UDP socket
I would like to use Qt Multimedia to display a video stream.
I have run
@server: $gst-launch-1.0 -v videotestsrc pattern=ball ! video/x-raw,width=1280,height=720 ! jpegenc ! rtpjpegpay ! udpsink name=...
- 33
2
votes
1
answer
1k
views
DirectShowPlayerService::doRender: Unresolved error code 0x80040266 (IDispatch error #102)
I am trying to stream a video over tcp based on gstreamer daemon.
I have created a pipeline which streams video over tcp socket as below:
pipeline_create p videotestsrc is-live=true pattern="ball" ! ...
2
votes
1
answer
3k
views
Display video in Qml via Gstreamer qmlglsink plugin
I'm trying the qmlsink example with Qt 5.12.2. It import the GLVideoItem plugin with
import org.freedesktop.gstreamer.GLVideoItem 1.0
But QtCreator always reminds Qml Module Not Found.
I have ...
- 207
2
votes
1
answer
557
views
GStreamer d3dvideosink overlay repaint flicker
I've got a quite persistent problem regarding the d3dvideosink.
My GStreamer pipeline is written by using the GStreamer SDK 1.14.2 in Qt/C++ and looks like this:
videotestsrc -> d3dvideosink
I use ...
- 115
2
votes
0
answers
476
views
Unable to play video using QWebView
I am trying to write a Qt application for armv7 processor which should play
video on launching. However this is not working as expected throwing errors while running my Qt application:
(:26817): ...
- 157
2
votes
1
answer
2k
views
How to link Qt API & GStreamer on Qt-Creator (MacOs)
I am on El Capitan 10.11.4 and I want to install Qt5 to create and develop project on Qt-Creator. I downloaded the installator on here. And I checked like that :
check list installation
Now I opened ...
- 53
2
votes
0
answers
455
views
place external live video frames from non supported V4L file into Gstreamer Qt , C++ Qthreads
OS: Ubuntu 14.04
SDK: Qt
GStreamer: > 1.0
I am wondering how would I put continuously captured frames from a non supported V4L camera into GStreamer.
Actually my task is to grab frames from the ...
- 2,180
2
votes
0
answers
634
views
Playing video with qt 5.2 on imx53 with gstreamer and HW accelerator
i tried to run qt qml video example from qt 5.2 on imx53 board with gstreamer support.
Our system modules:ltib/imx53/x11/qt5.2
i encountered the following issues when doing that:
1 – When i play ...
- 21
1
vote
4
answers
7k
views
why qt can run without x server and gtk cant
I am developing a gstreamer based app on AM335x starter kit running arago linux. "gst-launch"(with a test pipeline) gives proper command line output (serial) but shows nothing on the screen. BTW the ...
- 525
1
vote
2
answers
2k
views
Qt app undefined reference to `gst_app_src_push_buffer'
I'm creating a Qt application which will show a video which is more or less based on the following code:
https://gist.github.com/floe/e35100f091315b86a5bf
When I'm running it as it is at C file it's ...
1
vote
1
answer
1k
views
How to assign values to argc and argv in code and pass them to gst_init()
I want to declare and assign values to argc and argv in code rather than main function, so how to do that? I am using Qt.
- 636
1
vote
1
answer
3k
views
qt 5 QMediaPlayer error: Gstreamer unable to play
I just installed QT 5 and am trying to run the example for playing video. The code snippet looks like:
QMediaPlayer *player = new QMediaPlayer;
player->setMedia( QUrl::fromLocalFile(fileUrl) );
...
- 123
1
vote
1
answer
2k
views
How to specify GStreamer path for Qt-GStreamer build
I have gstreamer installed on my target system in /opt/gstreamer. When I try to build Qt-Gstreamer on my development host using cross-compiling tool I get:
* GStreamer (0.10.33 or higher) <http://...
- 5,083
1
vote
1
answer
2k
views
using gstreamer 1.6 qt sinks
I am trying to run the example that can be found here using gstreamer 1.6.4 on my ARM based board (https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/tests/examples/qt/qml)
I have Qt 5.5.1 ...
- 10.8k