[gst-devel] Gnonlin question: extract audio+video clip
Sandeep Prakash
123sandy at gmail.com
Thu Jul 29 08:30:13 CEST 2010
Hi,
Olivier Aubert-2 wrote:
>
> I think anyway that I should put a gnlcomposition in here, to keep
> both streams in sync.
>
Generally gnlcomposition is used when we join, say 2 video/audio streams.
Olivier Aubert-2 wrote:
>
> Does anyone use a gst-launch command line to do such things?
>
gst-launch can be used.
You need to set the caps for gnlfilesource in order to select the audio
stream from avi.
Also use the "audioconvert" plugin to convert to a format that "vorbisenc"
understands.
You can try the following command line:
gst-launch gnlfilesource name=video location=source.avi \
start=0 duration=5000000000 media-start=22000000000
media-duration=5000000000 ! \
identity single-segment=true ! progressreport ! ffmpegcolorspace !
theoraenc ! \
oggmux name=mux ! filesink location=/tmp/ex.ogv gnlfilesource name=audio
\
caps="audio/x-raw-int" location=source.avi \
start=0 duration=5000000000 media-start=22000000000
media-duration=5000000000 ! \
identity single-segment=true ! audioconvert ! vorbisenc ! mux.
Regards,
Sandeep Prakash
http://sandeepprakash.homeip.net
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