[gst-devel] Mixing streams

Gustavo Orrillo gustavo.orrillo at gmail.com
Mon Jun 14 20:32:00 CEST 2010

Thanks for the info Lucas! I will take a look at it


BTW: good luck in the World Cup

2010/6/14 Lucas Alberto <lucasa at gmail.com>

> Hi Andres,
> You should take a look at SLTV, a new open source streaming tool that I'm
> involved.
> This project is already capable to do live switch and mix different video
> sources (firewire DV, webcam, X11), apply video effects and text overlay.
> SLTV is implemented in python with gstreamer and GTK. We are planning to
> launch a stable version next month, and use it to streaming the eleventh
> edition of the International Free Software Forum [1] in Brazil.
> This is the web page of the project:
> http://sltv.holoscopio.com/index.html.en
> Luciana Fujii, a member of this list, is working in this project too.
> [1] http://softwarelivre.org/fisl11/english/about-the-event
> Cheers,
> Lucas Alberto
> 2010/6/14 <gstreamer-devel-request at lists.sourceforge.net>------------------------------
>> Message: 3
>> Date: Mon, 14 Jun 2010 16:14:16 +0200
>> From: Andres Gonzalez <acandido at hi-iberia.es>
>> Subject: [gst-devel] Mixing streams
>> To: gstreamer-devel at lists.sourceforge.net
>> Message-ID: <4C163938.2070109 at hi-iberia.es>
>> Content-Type: text/plain; charset="iso-8859-1"
>> Hello everybody,
>> I am learning gstreamer.  My goal is making a simple video mixer
>> application, that will allow the user  to select between several input
>> streams (coming from FireWire, Webcam, local file, ...) on real time.
>> The key feature is that there is a continuous output video stream, just
>> like it had been generated with a video editor previously.
>> As I am a newbie with gstreamer, as a training, first I am trying the
>> same with audio streams, extending the "helloworld.c" given in gstreamer
>> documentation. The very first step is a small program that concatenates
>> two ogg files, but it fails because the second stream is not written. (I
>> attach the source file). Also, if I try to switch the streams when  the
>> first song is not over (other variation of the program), I get a
>> run-time "data stream internal error".
>> What I am doing wrong?
>> Thanks for any help,
>> Andr?s
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