GStreamer-devel

Help with commandline gstreamer

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Kaustubh Khade

Help with commandline gstreamer

Hi,

I'm looking for a command line argument to do the following

1. Read a .mpg file
2. Transcode the video component to mpeg4 (using ffenc_mpeg4)
3. Transcode the audio component to mp3
4. mux this to an AVI file.

I know that I can use the following code to create a mp3 transcoded file using ffenc_libmp3lame (currently im just using a mp3 file as input.
gst-launch filesrc location=Desktop/nana\ patekar.mp3 ! decodebin name= dec dec. ! queue ! audioconvert ! ffenc_libmp3lame ! filesink location=Desktop/nana.mp3

I used this to get the video component in mpeg4 encoding in an AVI file.
gst-launch filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\ In\ The\ Name.mpg ! decodebin name= dec dec. ! queue ! ffenc_mpeg4 ! filesink location=Desktop/Rage_

gstreamer_v.avi

I just dont know how to do it together.

I want something that would take this file
'filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\ In\ The\ Name.mpg'

demux it and use the 'ffenc_mpeg4' and similarly 'audioconvert ! ffenc_libmp3lame' and use 'avimux' to create an avi.

Could someone help me out here?

Kaustubh

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Kaustubh Khade

Help with commandline gstreamer

Kaustubh

lrn-2

Re: Help with commandline gstreamer

Kaustubh Khade wrote:

> Hi,
>
> I'm looking for a command line argument to do the following
>
> 1. Read a .mpg file
> 2. Transcode the video component to mpeg4 (using ffenc_mpeg4)
> 3. Transcode the audio component to mp3
> 4. mux this to an AVI file.
>
> I know that I can use the following code to create a mp3 transcoded file
> using ffenc_libmp3lame (currently im just using a mp3 file as input.
> gst-launch filesrc location=Desktop/nana\ patekar.mp3 ! decodebin name= dec
> dec. ! queue ! audioconvert ! ffenc_libmp3lame ! filesink
> location=Desktop/nana.mp3
>
> I used this to get the video component in mpeg4 encoding in an AVI file.
> gst-launch filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\
> In\ The\ Name.mpg ! decodebin name= dec dec. ! queue ! ffenc_mpeg4 !
> filesink location=Desktop/Rage_gstreamer_v.avi
>
> I just dont know how to do it together.
>
> I want something that would take this file
> 'filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\ In\ The\
> Name.mpg'
>
> demux it and use the 'ffenc_mpeg4' and similarly 'audioconvert !
> ffenc_libmp3lame' and use 'avimux' to create an avi.
>
> Could someone help me out here?
>
> Kaustubh
>
>

Something like this:
gst-launch-0.10 filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\
Killing\ In\ The\ Name.mpg ! decodebin name=dec avimux name=avm dec.src0
! queue ! ffenc_mpeg4 ! avm.video_0 dec.src1 ! queue ! ffenc_libmp3lame
! avm.audio_0 avm.src ! filesink location=/Desktop/Rage_gstreamer_av.avi
(untested)
Assumes that src0 corresponds to video tracks and src1 to audio tracks
(which may or may not be the case, but usually it is).

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Kaustubh Khade

Re: Help with commandline gstreamer

Hi LRN,

Sorry for the late reply.
I tried the command you suggested, but gstreamer gives me this

'Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...'

and then stalls.

Dont rightly know why this is happening.
I'd encountered this before with my own adaptations and didnt find a reason why.

Any ideas?

2009/10/6 LRN <[hidden email]>

Kaustubh Khade wrote:
> Hi,
>
> I'm looking for a command line argument to do the following
>
> 1. Read a .mpg file
> 2. Transcode the video component to mpeg4 (using ffenc_mpeg4)
> 3. Transcode the audio component to mp3
> 4. mux this to an AVI file.
>
> I know that I can use the following code to create a mp3 transcoded file
> using ffenc_libmp3lame (currently im just using a mp3 file as input.
> gst-launch filesrc location=Desktop/nana\ patekar.mp3 ! decodebin name= dec
> dec. ! queue ! audioconvert ! ffenc_libmp3lame ! filesink
> location=Desktop/nana.mp3
>
> I used this to get the video component in mpeg4 encoding in an AVI file.
> gst-launch filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\
> In\ The\ Name.mpg ! decodebin name= dec dec. ! queue ! ffenc_mpeg4 !
> filesink location=Desktop/Rage_gstreamer_v.avi
>
> I just dont know how to do it together.
>
> I want something that would take this file
> 'filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\ Killing\ In\ The\
> Name.mpg'
>
> demux it and use the 'ffenc_mpeg4' and similarly 'audioconvert !
> ffenc_libmp3lame' and use 'avimux' to create an avi.
>
> Could someone help me out here?
>
> Kaustubh
>
>

Something like this:
gst-launch-0.10 filesrc location=Desktop/Rage\ Against\ The\ Machine\ -\
Killing\ In\ The\ Name.mpg ! decodebin name=dec avimux name=avm dec.src0
! queue ! ffenc_mpeg4 ! avm.video_0 dec.src1 ! queue ! ffenc_libmp3lame
! avm.audio_0 avm.src ! filesink location=/Desktop/Rage_gstreamer_av.avi
(untested)
Assumes that src0 corresponds to video tracks and src1 to audio tracks
(which may or may not be the case, but usually it is).

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is the only developer event you need to attend this year. Jumpstart your
developing skills, take BlackBerry mobile applications to market and stay
ahead of the curve. Join us from November 9-12, 2009. Register now!
http://p.sf.net/sfu/devconf
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