All Questions
274
questions
50
votes
1
answer
900
views
Qt5 VideoOverview example does not work. Any solution?
I am stuck for a month with a video example given in Qt Video Overview.
I tried that code, but I only got a blank square (QWidget). I am using GStreamer0.10 for media playback over Qt5. I also played ...
user5585984
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
13
votes
4
answers
17k
views
What's the meaning of 'blacklisted' on GStreamer?
I'm trying to cross-compile GStreamer. Version is 1.2.3. Host PC's OS is x86 linux and Target system's OS is MIPSEL linux OS.
I succeeded to compile gstreamer and plugins for target device. And gst-...
- 1,462
11
votes
6
answers
38k
views
Looping a video with gstreamer and gst-launch?
I am able to play a video on the command line with gstreamer's gst-launch like this:
gst-launch gnlfilesource location=file:///tmp/myfile.mov start=0 duration=2000000000 ! autovideosink
This plays ...
- 59.4k
11
votes
6
answers
18k
views
How can I speed up a video by dropping frames?
I've got a video that's 30 minutes long. I want to make a speeded up version that's (say) 15 minutes long. I could do this by dropping every 2nd frame. How can I do this on linux?
I'm playing with ...
- 59.4k
11
votes
1
answer
14k
views
How to pipe live video frames from ffmpeg to PIL?
I need to use ffmpeg/avconv to pipe jpg frames to a python PIL (Pillow) Image object, using gst as an intermediary*. I've been searching everywhere for this answer without much luck. I think I'm close ...
- 1,663
9
votes
3
answers
4k
views
Gst-python is installed, but can't find plugins
I'm trying to run some Gstreamer examples for the Google Coral USB accelerator - I'm not using the Coral dev board. The driver is installed and works and I can classify images from my camera using ...
- 2,703
8
votes
6
answers
36k
views
what is default path for header file included in c program?
see if i write in any c file like
#include "header.h"
then it will search this file in current directory
but when i write
#include <header.h>
then where it will go to find this file ?
...
- 26.7k
7
votes
1
answer
19k
views
GStreamer pipeline broken
I am not sure why this pipeline is breaking, I have gstreamer installed on linux from the websites exact instructions, any ideas?
gst-launch-1.0 v4l2src device=/dev/video0 ! videoscale ! video/x-raw, ...
- 139
7
votes
2
answers
13k
views
Gstreamer tcpserversink v0.10 vs 1.0 and HTML5 video tag
I am embedding a HTML5 video tag in my site, the source being a gstreamer stream.
I have a pipeline working on gst 0.10:
gst-launch-0.10 -v videotestsrc ! theoraenc ! oggmux ! queue ! tcpserversink ...
- 835
7
votes
2
answers
8k
views
How do you play or record audio (to .WAV) on Linux in C++?
Hello, I've been looking for a way to play and record audio on a Linux (preferably Ubuntu) system. I'm currently working on a front-end to a voice recognition toolkit that'll automate a few steps ...
- 468
5
votes
2
answers
31k
views
How to make apt-get to ignore ca-certificate issue - cannot install gstreamer dev library [closed]
I am currently trying to develop gstreamer plugins by using gstreamer-development library as instructed in:
http://docs.gstreamer.com/display/GstSDK/Installing+the+SDK
I have an Ubuntu 14.04 ...
- 621
5
votes
2
answers
4k
views
How can I test my gstreamer plugin? Is there any standard test-suite for gstreamer plugin testing?
Suppose I have made my gstreamer based plugin. I have installed it and it is working properly with gst-launch application.
But now I want to test my gstreamer plugin. So is there a standard test-...
- 26.7k
5
votes
1
answer
2k
views
How can i get the application code created by gst-launch or gstreamer pipeline editor?
see if i have made one application like below by gst-launch commnad
gst-launch -v filesrc location=ed_hd.mkv ! matroskademux ! vorbisdec ! audioconvert ! audioresample ! autoaudiosink
when ever i ...
- 26.7k
5
votes
0
answers
521
views
python opencv display gstreamer videotestsrc
I need to use GStreamer to deliver data to some OpenCV/Cuda classification and deep-learning systems.
The problem is that I'm new to the GStreamer and the Cuda, so I need to make some simple examples ...
- 91
5
votes
1
answer
2k
views
gst-launch-1.0 and GStreamer version mismatch
I am using this script to install version 1.14 of GStreamer on a Raspberry Pi.
https://gist.github.com/Swap-File/d8511128930c93281f36f18d634f6748
I completely uninstall GStreamer from the pi ...
- 1,862
5
votes
0
answers
1k
views
SSH tunneling and Gstreamer
Is this a gstreamer issue or ssh tunnel problem?
I'm trying to tunnel Gstreamer over ssh. Doing this on the local client works (plays the video to the waiting gstreamer client on the local client):
...
- 51
5
votes
0
answers
1k
views
GStreamer Custom-Plugin and alsasink Unable to Detect Format
I'm developing a GStreamer plugin following the GStreamer Plugin Writer's Guide and using gst-element-maker from the gst-plugins-bad repository with the base class set to basetransform. As a starting ...
- 1,751
4
votes
2
answers
3k
views
How can I record live video with gstreamer without dropping frames?
I'm trying to use gstreamer 0.10 from Python to simultaneously display a v4l2 video source and record it to xvid-in-avi. Over a long period of time the computer would be fast enough to do this but if ...
- 41.2k
4
votes
1
answer
4k
views
Tag Video by Frame with GPS Info using GStreamer
I have been tasked to tag a video frame-by-frame with gps coordinates as it is recording.
The platform must be on Linux (Ubuntu to be specific).
Very new to programming with video sources..
Some ...
- 1,937
4
votes
1
answer
1k
views
Interrupt handle is not called after added with g_unix_signal_add
I am learning about gstreamer and I have a simple program where I want to end a stream gracefully after pressing CTRL+C in Linux. For this, I've read the source code for gst-launch and saw that ...
- 121
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
8k
views
Two-way audio for software ip camera
I am trying to setup a raspberry pi box with a usb camera as a IP Camera that can be viewed from a a generic android IP Camera monitor app. I've found some examples on how to get the video stream, and ...
- 19.2k
4
votes
1
answer
6k
views
Gstreamer recording video with audio
I'm trying to record on a file a video from my webcam along with audio using Gstreamer on my Ubuntu 16 machine through glib library.
I'm able to watch the video streaming from the webcam through these ...
- 41
4
votes
0
answers
1k
views
Raspi v2 camera is not working with v4l2src
Environment :- Raspi v2 camera, Jetson nano board, Ubuntu 18.04
I started with nvarguscamerasrc and it's working :-
gst-launch-1.0 nvarguscamerasrc sensor_mode=0 ! 'video/x-raw(memory:NVMM),width=3820,...
- 41
4
votes
1
answer
323
views
Segmentation error with PyQt5 QMultimedia on Linux
I am using PyQt5 on Ubuntu 18.04.3 LTS. I'm trying to play a .mp3 file using QtMultimedia.QMediaPlayer. This is my code:
import sys
from PyQt5 import QtCore, QtMultimedia
from PyQt5.QtWidgets import ...
- 73
4
votes
1
answer
3k
views
How to fix image problems when streaming h.264 via gstreamer udpsink
Using gstreamer I want to stream images from several Logitech C920 webcams to a Janus media server in RTP/h.264 format. The webcams produce h.264 encoded video streams, so I can send the streams to a ...
- 43
4
votes
0
answers
1k
views
Draw text on a Wayland surface in C
I am a newbie in Wayland programming. Currently, I wanna create an application which can show FPS of a playing video on a surface of a Wayland client.
First, I use Gstreamer to read fps. I already ...
- 1,344
4
votes
1
answer
2k
views
How to pass/return a structure from dbus using C programming?
I am building a music player using gstreamer-1.0. I am using sqlite3 to store meta data of the mp3 files. And I would like to use dbus for communication between gstreamer and database. This is ...
- 51
3
votes
1
answer
8k
views
WARNING: erroneous pipeline: no element "rtspclientsink"
I have a gstreamer command that requires "rtspclientsink" and the error I get is:
WARNING: erroneous pipeline: no element "rtspclientsink"
I tried to reinstall gstreamer using the following ...
- 51
3
votes
3
answers
3k
views
Is it possible to use GStreamer without a graphic interface running?
I am setting up my first application using GStreamer and one of the requirements is that the environment must be optimized, so no graphic interface.
I have Arch Linux running on a Pandaboard (ARMv7 - ...
- 7,377
3
votes
2
answers
8k
views
gstreamer and mp4 or avi output with audio
I have the syntax below that will show the video of my webcam on the screen and encode the video to an ogv file.
What I would like to do is show the video on the screen but change it from an ogv file ...
- 3,369
3
votes
5
answers
13k
views
gstreamer:No such element or plugin 'videotestsrc'
I have upgrade my gstreamer to the lastest version 1.4.0 on Linux, including the gst-plugins-base/good/bad/ugly. But when I try to play a video, I cannot find many elements, such as xvimagesink, ...
3
votes
1
answer
1k
views
specify soundcard with python-gstreamer
Can I please have advice on how to specify a soundcard for output in a gstreamer pipeline using python-gstreamer (pygst).
On a linux system I have provided names for the soundcards in /etc/asound....
- 185
3
votes
2
answers
5k
views
python + gstreamer plugins
I have code that generates this error:
** Message: pygobject_register_sinkfunc is deprecated (GstObject)
Traceback (most recent call last):
File "PlayingVideo.py", line 199, in <module>
player =...
- 425
3
votes
2
answers
1k
views
cross compiling gstreamer fails: x86-64 -> ARMv6 32-bit
I am trying to build a project on an x86_64 (linux)system for an RPi 1. I have a working tool chain - I have built a small program and run it on the RPi ("Hello World").
The project that I am trying ...
- 55
3
votes
1
answer
2k
views
Save RTSP into file with GStreamer without re-encoding
I would like to ask for some tips how to save rtsp stream from surveillance IP camera into file by GStreamer. I have found this:
gst-launch -e rtspsrc location="rtsp://(my-camera-stream-address)" ! ...
- 71
3
votes
3
answers
6k
views
gstreamer tcpclientsink connection refused
Hi I am trying to stream data from linux box (Raspberry Pi) to Macbook pro using gstreamer-1.0.
On Raspberry-Pi (Linux)
pi@raspberrypi:[~]$ gst-launch-1.0 filesrc location="video.h264" ! ...
- 1,259
3
votes
1
answer
5k
views
Gstreamer appsink receiving buffers much slower than real time on CARMA board
I am relatively new to asking question on stack overflow, but I will do my best to explain the problem thoroughly.
I am currently using an Axis IP Camera to obtain live video to a CARMA board. ...
3
votes
1
answer
2k
views
Gstreamer video output position tracking and seeking
I am using gstreamer (gst-launch) to capture camera and save the stream as both video and image frame. The problem of the pipeline is, when the pipeline finishes (by interrupt) the video record, it ...
- 451
3
votes
1
answer
2k
views
No pad-added signal callback in my gstreamer
I am trying to build the pipeline when "pad-added" callback is received .
When I run the udpsink pipeline, I am not receiving any callback, instead I am receiving GST_MESSAGE_ERROR, with the ...
- 4,277
3
votes
1
answer
3k
views
OpenCv + Gstreamer + python on linux
I tell them that I need to implement opencv with Gstreamer Hayo but not how to write with opencv on a pipe gstreamer.
the idea is to take the image and the webcam through OpenCV and process some ...
- 41
3
votes
2
answers
9k
views
Installing gstreamer1.0 on debian wheezy (dependencies libgstreamer-plugins-base1.0-0 and liborc-0.4-0)
I'm attempting to install gstreamer1.0 on debian wheezy.
sudo apt-get install gstreamer1.0
There are a few dependency errors. One of which is an incorrect version of libgstreamer-plugins-base1.0-0
...
- 61
3
votes
0
answers
444
views
Disable DNS IPv6 lookup in gstreamer
Initial problem: when reading http streams with gstreamer (gst-launch command) on a specific customer network, I observed very often (not always) a 5 seconds initial delay before the stream starts ...
- 18.5k
3
votes
0
answers
3k
views
PyQt5 - Can't play video using QVideoWidget
from PyQt5.QtWidgets import *
from PyQt5.QtMultimedia import *
from PyQt5.QtMultimediaWidgets import *
from PyQt5.QtCore import *
import sys
app = QApplication(sys.argv)
w = QVideoWidget()
w.resize(...
- 65
2
votes
2
answers
7k
views
Sink to the virtual v4l2 device
I have tried an example on Ubuntu 19.04
gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video10
But gstreamer fails
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
ERROR: ...
- 33
2
votes
1
answer
7k
views
rtspclientsink test pipeline from command line
I would like to stream with rtsp using GStreamer pipeline elements. First, I checked with gst-inspect-1.0 that rtspclientsink is available:
xilinx-k26-starterkit-2020_2:/# gst-inspect-1.0 | grep rtsp
...
- 21
2
votes
1
answer
4k
views
Gstreamer 1.0 no video when udpsink pipeline runs before udpsrc pipeline
I'm trying to stream a webcam feed from Computer A to Computer B via udpsink. If Computer A's pipeline sends data to Computer B before Computer B starts its receiving pipeline through udpsrc, I get ...
- 101
2
votes
1
answer
2k
views
When does set_caps of a source element get called?
I am writing a gstreamer source element. For that, I have looked into sources like v4l2src which are similar to what I need. After going through, this I wonder about the set_caps function in it as to ...
- 21
2
votes
1
answer
12k
views
GStreamer appsrc to file example
I'd like to write audio buffers to file.
The problem is that the file is always empty or the applicaition stops immediately with Internal data flow error.
Examples are:
https://gist.github.com/...
- 7,355