[gst-devel] Problem with Recording Audio from a Network

roope.jarvinen at nokia.com roope.jarvinen at nokia.com
Thu Jun 11 10:15:37 CEST 2009


Hi Zelalem,

You can use rtppcmapay/depay and rtppcmupay/depay elements with alaw and ulaw.

Correct type for alaw is audio/x-alaw and not audio/x-alaw-int.

--Roope


________________________________
From: ext Zelalem Sintayehu [mailto:zelalems at hotmail.com]
Sent: 11 June, 2009 11:08
To: gstreamer-devel at lists.sourceforge.net
Subject: Re: [gst-devel] Problem with Recording Audio from a Network

Hi Roope, you are right, it allows alaw,mulaw,ac3,mpeg and raw. But alaw and mulaw don't have payloader and depayloader. Anyway, I tried to recieve without depayloader but it still produced the same error. The following is what  tried. Please help me.

gst-launch-0.10 -v udpsrc port=5002 caps="audio/x-rtp,rate=1000,channels=1,depth=8" ! queue ! audio/x-alaw-int,rate=1000,channels=1,depth=8 ! avimux ! filesink location=audio.avi sync=false .   I also changed the caps for udpsrc with "audio/x-alaw-int,rate=1000,channels=1,depth=8" but didn't work.

Thank you.

- Zelalem S.

________________________________
From: roope.jarvinen at nokia.com
To: gstreamer-devel at lists.sourceforge.net
Date: Thu, 11 Jun 2009 09:35:58 +0200
Subject: Re: [gst-devel] Problem with Recording Audio from a Network



Hi,

You cannot mux gsm-encoded audio into AVI container. Check avimux description for allowed formats.

--Roope


________________________________


Hi Jyoti, thank you for your prompt response. I added the following caps statement, but it is still the same. The following is the modified receiver side code.

gst-launch-0.10 -v udpsrc port=5002 caps="application/x-rtp,media=(string)audio,clock-rate=(int)8000,encoding-name=(string)GSM,encoding-params=(string)1,octet-align=(string)1" ! queue ! rtpgsmdepay ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! avimux ! filesink location=audio.avi sync=false

The error is the same: "WARNING: erroneous pipeline: could not link rtpgsmdepay0 to avimux0"

Thank you.

- Zelalem S.
-----------------------------------
From: jyoti.d at allaboutif.com
To: gstreamer-devel at lists.sourceforge.net
Subject: Re: [gst-devel] Problem with Recording Audio from a Network

You should set caps property on udpsrc element at receiver side.

On Wed, Jun 10, 2009 at 7:26 PM, Zelalem Sintayehu <zelalems at hotmail.com<mailto:zelalems at hotmail.com>> wrote:
Hi all, I was trying to record audio and video over the network. I wanted to check that separately and succeeded with the video recording, but i couldn't record the audio part. BTW, I want to record into avi file and I used h263p for the video and wanted to use either amr or gsm for the audio. I hope this is possible. The following is my code both from teh sender and reciever side.

Sender:
gst-launch-0.10 -v alsasrc ! queue ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! audioconvert ! gsmenc ! rtpgsmpay ! queue ! udpsink port=5002

Receiver:

gst-launch-0.10 -v udpsrc port=5002 ! queue ! rtpgsmdepay ! audio/x-raw-int,rate=8000,channels=1,depth=8 ! avimux ! filesink location=audio.avi sync=false

and I got the following error and it terminates.  "WARNING: erroneous pipeline: could not link rtpgsmdepay0 to avimux0. By the way, when i store both the video later, should i still put "sync=false" (the last statement in the reciever code)?


Please help me.

________________________________



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