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trouble with tee element

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Bert Douglas

trouble with tee element

Hi All,

The script below does not work. It stays in "prerolling" state forever.
However, if the last two lines are deleted, then it does work.
I am running code from git about 1 week old.

Thanks much for looking.
Bert Douglas

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Bert Douglas

Re: trouble with tee element

Forgot to put in the script. Here it is:

gst-launch \
      videomixer name="mix" \
   ! ffmpegcolorspace \
   ! xvimagesink name=sink force-aspect-ratio=1 \
\
      videotestsrc name=src1 pattern="smpte" \
   ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
   ! tee name=t1 \
   ! mix.sink_1 \
\
      videotestsrc name=src2 pattern="checkers-8" \
   ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
   ! tee name=t2 \
   ! mix.sink_2 \
\
\
      t1. ! fakesink \
      t2. ! fakesink \

On Tue, Aug 31, 2010 at 3:35 PM, Bert Douglas <[hidden email]> wrote:

Hi All,

The script below does not work. It stays in "prerolling" state forever.
However, if the last two lines are deleted, then it does work.
I am running code from git about 1 week old.

Thanks much for looking.
Bert Douglas

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Tim-Philipp Müller-2

Re: trouble with tee element

On Tue, 2010-08-31 at 15:37 -0500, Bert Douglas wrote:

> Forgot to put in the script. Here it is:
>
> gst-launch \
> videomixer name="mix" \
> ! ffmpegcolorspace \
> ! xvimagesink name=sink force-aspect-ratio=1 \
> \
> videotestsrc name=src1 pattern="smpte" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t1 \
> ! mix.sink_1 \

You need a queue here for each branch after a tee.

> videotestsrc name=src2 pattern="checkers-8" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t2 \
> ! mix.sink_2 \

(so here too)

> \
> t1. ! fakesink \

(and here)

> t2. ! fakesink \

(and here)

Cheers
-Tim

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Bert Douglas

Re: trouble with tee element

Thanks much.

Is this in docs anywhere?

On Tue, Aug 31, 2010 at 4:15 PM, Tim-Philipp Müller <[hidden email]> wrote:

On Tue, 2010-08-31 at 15:37 -0500, Bert Douglas wrote:

> Forgot to put in the script. Here it is:
>
> gst-launch \
> videomixer name="mix" \
> ! ffmpegcolorspace \
> ! xvimagesink name=sink force-aspect-ratio=1 \
> \
> videotestsrc name=src1 pattern="smpte" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t1 \
> ! mix.sink_1 \

You need a queue here for each branch after a tee.

> videotestsrc name=src2 pattern="checkers-8" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t2 \
> ! mix.sink_2 \

(so here too)

> \
> t1. ! fakesink \

(and here)

> t2. ! fakesink \

(and here)

Cheers
-Tim

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Tim-Philipp Müller-2

Re: trouble with tee element

On Tue, 2010-08-31 at 16:34 -0500, Bert Douglas wrote:
> Thanks much.
>
> Is this in docs anywhere?

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

(I just uploaded an updated version though, the bit about the need for
queues was added recently in git.)

Cheers
-Tim

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Tiago Katcipis

Re: trouble with tee element

In reply to this post by Bert Douglas

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

best regards,
Katcipis

On Tue, Aug 31, 2010 at 6:34 PM, Bert Douglas <[hidden email]> wrote:

Thanks much.

Is this in docs anywhere?

On Tue, Aug 31, 2010 at 4:15 PM, Tim-Philipp Müller <[hidden email]> wrote:

On Tue, 2010-08-31 at 15:37 -0500, Bert Douglas wrote:

> Forgot to put in the script. Here it is:
>
> gst-launch \
> videomixer name="mix" \
> ! ffmpegcolorspace \
> ! xvimagesink name=sink force-aspect-ratio=1 \
> \
> videotestsrc name=src1 pattern="smpte" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t1 \
> ! mix.sink_1 \

You need a queue here for each branch after a tee.

> videotestsrc name=src2 pattern="checkers-8" \
> ! video/x-raw-rgb, bpp=32, framerate=10/1, width=400, height=300 \
> ! tee name=t2 \
> ! mix.sink_2 \

(so here too)

> \
> t1. ! fakesink \

(and here)

> t2. ! fakesink \

(and here)

Cheers
-Tim

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