Some problem regarding gstreamer-0.10

[mazharf]

Hi! I am facing a problem regarding Gstreamer-0.10. I need to convert stereo to mono and for that purpose I am unable to find the plugin stereo2mono. Can any body help me find the plugin or is there any other alternative???

This is the pipeline that I am trying to create:
source ! mad ! stereo2mono ! speed ! osssink
Thankyou!!

BR
Mazharf

[Tiago Katcipis]

I think audioconvert is what you are looking for:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-plugins/html/gst-plugins-base-plugins-audioconvert.html

Audioconvert converts raw audio buffers between various possible formats. It supports integer to float conversion, width/depth conversion, signedness and endianness conversion and channel transformations.

best regards,
Katcipis

On Wed, Jul 14, 2010 at 7:12 AM, mazharf <[hidden email]> wrote:

Hi! I am facing a problem regarding Gstreamer-0.10. I need to convert stereo
to mono and for that purpose I am unable to find the plugin stereo2mono. Can
any body help me find the plugin or is there any other alternative???

This is the pipeline that I am trying to create:
source ! mad ! stereo2mono ! speed ! osssink
Thankyou!!

BR
Mazharf
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[Tim-Philipp Müller-2]

On Mon, 2010-07-19 at 09:53 -0300, Tiago Katcipis wrote:

> > This is the pipeline that I am trying to create:
> > source ! mad ! stereo2mono ! speed ! osssink
>
> I think audioconvert is what you are looking for:

Indeed, you can force mono output by putting a capsfilter after
audioconvert, like this:

 ... ! mad ! audioconvert ! audio/x-raw-int,channels=1 ! ...


However, usually it's best to just leave it at:

 .... ! mad ! audioconvert ! ... ! osssink

and let audioconvert automatically convert to mono or not, depending on
what the audio sink claims to support.

Cheers
 -Tim


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[mazharf]

Thank you for your reply, it worked fine and now I  am facing a new problem. Actually I am trying to play multiple files simultaneously. The following pipeline I have made
filesrc | decodebin | audioconvert | adder | autoaudiosink

and with the help of adder element I am trying to add a new file, following is the pipeline
filesrc | decodebin | audioconvert

and further audioconvert is connected to the adder.

These are the warnings that I am getting
(out:2542): GStreamer-WARNING **: Element add already has parent

(out:2542): GStreamer-WARNING **: Trying to connect elements that don't share a common ancestor: audio-converter and add

(out:2542): GStreamer-WARNING **: Trying to connect elements that don't share a common ancestor: audio-converter and add

Please guide me as I am new to gstreamer.

B.R
Mazharf

[mazharf]

Thank you for your reply, it worked fine and now I  am facing a new problem. Actually I am trying to play multiple files simultaneously. The following pipeline I have made
filesrc | decodebin | audioconvert | adder | autoaudiosink

and with the help of adder element I am trying to add a new file, following is the pipeline
filesrc | decodebin | audioconvert

and further audioconvert is connected to the adder.

These are the warnings that I am getting
(out:2542): GStreamer-WARNING **: Element add already has parent

(out:2542): GStreamer-WARNING **: Trying to connect elements that don't share a common ancestor: audio-converter and add

(out:2542): GStreamer-WARNING **: Trying to connect elements that don't share a common ancestor: audio-converter and add

Please guide me as I am new to gstreamer and also to this blogging stuff :)  

B.R
Mazharf

[Robert Powell-2]

On Thu, Jul 22, 2010 at 2:52 AM, mazharf <[hidden email]> wrote:

The following pipeline I have made
filesrc | decodebin | audioconvert | adder | autoaudiosink

and with the help of adder element I am trying to add a new file, following
is the pipeline
filesrc | decodebin | audioconvert

and further audioconvert is connected to the adder.

These are the warnings that I am getting
(out:2542): GStreamer-WARNING **: Element add already has parent

You have already added the element "add" to another container.
 

(out:2542): GStreamer-WARNING **: Trying to connect elements that don't
share a common ancestor: audio-converter and add

This is because of the previous warning.

Hope that helps.

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