How to oggdemux, many streams

[zakri]

Hi

I created a stream using:
gst-launch -e oggmux name=mux ! queue ! filesink location=vid.ogv \
    v4l2src device=/dev/video0 ! queue ! video/x-raw-yuv, width=320, height=240,framerate=15/1 ! queue ! \
      textoverlay font-desc="Sans 24" text="CAM1" valign=top halign=left shaded-background=true ! queue ! theoraenc ! queue ! mux. \
    v4l2src device=/dev/video1 ! queue ! video/x-raw-yuv, width=320, height=240,framerate=15/1 ! queue ! \
      textoverlay font-desc="Sans 24" text="CAM2" valign=top halign=left shaded-background=true ! queue ! theoraenc ! queue ! mux.

VLC plays this file vid.ogv without any problem and I see two streams.

When I want to play using gst-launch I put:
gst-launch filesrc location=vid.ogv ! oggdemux name="demux" ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink \
    demux. ! queue ! theoradec ! videoscale ! video/x-raw-yuv, width=640, height=400 ! videobox border-alpha=0 top=-10 left=-10 ! mix. ! \
    demux. ! queue ! theoradec ! videoscale ! video/x-raw-yuv, width=640, height=400 ! videobox border-alpha=0 top=-10 left=-10 ! mix.

and gets the message: WARNING: erroneous pipeline: link without source element

How to select the stream which I want to play?

Can anyone help me??


Best regards
zakri

[Victor Jaquez]

On Fri, Dec 30, 2011 at 02:00:58AM -0800, zakri wrote:

> Hi
>
> I created a stream using:
> gst-launch -e oggmux name=mux ! queue ! filesink location=vid.ogv \
>     v4l2src device=/dev/video0 ! queue ! video/x-raw-yuv, width=320,
> height=240,framerate=15/1 ! queue ! \
>       textoverlay font-desc="Sans 24" text="CAM1" valign=top halign=left
> shaded-background=true ! queue ! theoraenc ! queue ! mux. \
>     v4l2src device=/dev/video1 ! queue ! video/x-raw-yuv, width=320,
> height=240,framerate=15/1 ! queue ! \
>       textoverlay font-desc="Sans 24" text="CAM2" valign=top halign=left
> shaded-background=true ! queue ! theoraenc ! queue ! mux.
>
> VLC plays this file vid.ogv without any problem and I see two streams.

I can't test your setup, but above you're encoding two video streams, but
below you're demuxing 3!

>
> When I want to play using gst-launch I put:
> gst-launch filesrc location=vid.ogv ! oggdemux name="demux" ! videomixer
> name=mix ! ffmpegcolorspace ! xvimagesink \

this is one

>     demux. ! queue ! theoradec ! videoscale ! video/x-raw-yuv, width=640,
> height=400 ! videobox border-alpha=0 top=-10 left=-10 ! mix. ! \

two

>     demux. ! queue ! theoradec ! videoscale ! video/x-raw-yuv, width=640,
> height=400 ! videobox border-alpha=0 top=-10 left=-10 ! mix.

and three


I you want "preview" one of those streams, you'll need to tee[1] them

1. http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/gstreamer-plugins-tee.html

>
> and gets the message: WARNING: erroneous pipeline: link without source
> element
>
> How to select the stream which I want to play?
>
> Can anyone help me??
>
>
> Best regards
> zakri
>
>
>
>
> --
> View this message in context: http://gstreamer-devel.966125.n4.nabble.com/How-to-oggdemux-many-streams-tp4245385p4245385.html
> Sent from the GStreamer-devel mailing list archive at Nabble.com.
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