gstreamer

Using an external audio processor in GStreamer pipeline

I'm currently testing the GStreamer audio framework and it's capabilities. My goal would be to write a basic radio automation system which can handle the scheduling of audio track mixing and stream the result to a media server like Shoutcast. I like to add some post processing to the final mix before sending it to the encoder. Although ...

Adding and removing audio sources to/from GStreamer pipeline on-the-go

I wrote a little Python script which uses an Adder plugin to mix two source streams together. After starting the program, you hear a 1kHz tone generated by the audiotestsrc plugin. When you press Enter, an another 500Hz test tone is connected to the Adder so you hear them together. (By the way, i don't really get why should i set the pi...

gstreamer fast transcode

EDIT Updated code with solution I need to transcode amr to mp3, so i wrote a gstreamer pipeline in gstreamer-java. It looks like this: src ! amrparse ! amrnbdec ! lamemp3enc ! sink (actually built with the java API, of course), i start the transcode with Bus.connect(EOS, fn(){Gst.quit();}); setState(PLAYING); Gst.main(); It wo...

gstreamer command to compose (pip) two videos.

What command should I execute in gstreamer in order to compose two 320x240 videos into a single 640x240 side-by-side video? let's say I have video1.avi and video2.avi ...

Images Slideshow in Gstreamer

I want to make a GStreamer application which takes a xml file process its content which provides information like image url, its weight and the duration for which it is going to be displayed on the screen. The xml file can be clearly processed in C using libxml. But how can we create a slideshow of the images using the GStreamer librar...

gstreamer pipeline that was working now requiring a bunch of queue components, why?

I have a C program that records video and audio from a v4l2 source into flv format. I noticed that the program did not work on newer versions of ubuntu. I decided to try to run the problamatic pipeline in gst-launch and try to find the simplest pipeline that would reproduce the problem. Just focusing on the video side I have reduced it t...

See this example on webcam capturing in python

When I run this script on my machine ( ubuntu 10.04 32 bit ): http://pygstdocs.berlios.de/pygst-tutorial/webcam-viewer.html I click on "Start" button and then I get this error: # python example-webcam.py example-webcam.py: Fatal IO error 0 (Success) on X server :0.0. Why ? ...

rtsp streaming on java

hi all, can anyone please help me with a tutorial on how to implement a RTSP streaming server in java using gstreamer. link text ...