Adding a silent audio to a recording

Matthew Eshleman matthew at
Thu Dec 6 07:16:03 PST 2012

audiotestsrc is your friend.

Note it injects a description tag into the pipeline that will pollute your
metadata a bit, but it works.  (or at least 0.10 did/does).

wave=4 is silence.

Good luck,


On Wed, Dec 5, 2012 at 5:09 AM, eitanavgil <eitanavgil at> wrote:

> I am using gstreamer to capture a video game as a videocast. Later on , I
> want to upload the videos to youtube but when I upload it through API it
> fails to convert the video for it has no audio data in it.
> Is there a way to force a silent audio track during the recording phase?
> --
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