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See and record a webcam stream

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Carlos Castro

See and record a webcam stream

Hi everyone,

I'm trying to build a simple GTK app using GST as a backend to see and
record a webcam stream.

I can do both but separately... My problem is doing both at the same time.
What I'm trying to accomplish is this:

gst-launch-0.10 v4l2src \
! videorate \
! video/x-raw-yuv,framerate=25/2 \
! ffmpegcolorspace \
! tee name=t1 \
! queue \
! xvimagesink sync=false t1. \
! queue \
! theoraenc quality=16 \
! oggmux name=mux osssrc \
! audio/x-raw-int,rate=22050,channels=1 \
! queue \
! audioconvert \
! vorbisenc quality=0.2 \
! mux. mux. \
! queue \
! filesink location=test.ogg

My code is this:

...
m_pipeline = gst_pipeline_new ("pipeline");
m_bin = gst_bin_new ("bin");
m_source = gst_element_factory_make ("v4l2src", "video_src");
m_videorate = gst_element_factory_make ("videorate", "videorate");
m_framerate = gst_element_factory_make
("video/x-raw-yuv,framerate=25/2", "framerate");
m_colorspace = gst_element_factory_make ("ffmpegcolorspace", "colorspace");
m_tee = gst_element_factory_make ("tee name=t1", "t1");
m_queue = gst_element_factory_make ("queue", "queue");
m_imagesink = gst_element_factory_make ("xvimagesink sync=false t1.",
"imagesink");
m_queue2 = gst_element_factory_make ("queue", "queue2");
m_videoenc = gst_element_factory_make ("theoraenc quality=16", "video_enc");
m_mux = gst_element_factory_make ("oggmux name=mux osssrc", "mux");
m_audio = gst_element_factory_make
("audio/x-raw-int,rate=22050,channels=1", "audio");
m_queue3 = gst_element_factory_make ("queue", "queue3");
m_audiocon = gst_element_factory_make ("audioconvert", "audio_con");
m_audioenc = gst_element_factory_make ("vorbisenc quality=0.2", "audio_enc");
m_mux2 = gst_element_factory_make ("mux. mux.", "mux2");
m_queue4 = gst_element_factory_make ("queue", "queue4");
m_file = gst_element_factory_make ("filesink location=test.ogg", "filesink");

gst_bin_add_many (GST_BIN (m_bin), m_source, m_videorate, m_framerate,
m_colorspace, m_tee, m_queue, m_imagesink, m_queue2, m_videoenc,
m_mux, m_audio, m_queue3, m_audiocon, m_audioenc, m_mux2, m_queue4,
m_file , NULL);
gst_bin_add (GST_BIN (m_pipeline), m_bin);
gst_element_link_many (m_source, m_videorate, m_framerate,
m_colorspace, m_tee, m_queue,
m_imagesink, m_queue2, m_videoenc, m_mux, m_audio, m_queue3,
m_audiocon, m_audioenc, m_mux2, m_queue4, m_file , NULL);

if (GST_IS_X_OVERLAY (m_imagesink))
gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (m_imagesink),
GPOINTER_TO_INT (window));

gst_element_set_state (m_pipeline, GST_STATE_PLAYING);
...

Can anyone help me on what I'm doing wrong?

Thanks,
Carlos Castro

--
Cumprimentos,
Carlos Castro

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Carlos Castro

Re: See and record a webcam stream

With a little bit of work I managed to get it to work...

Carlos Castro

Em 6 de Jan de 2010 15:21, Carlos Castro <[hidden email]> escreveu:

> Hi everyone,
>
>
>
> I'm trying to build a simple GTK app using GST as a backend to see and
>
> record a webcam stream.
>
>
>
> I can do both but separately... My problem is doing both at the same time.
>
> What I'm trying to accomplish is this:
>
>
>
> gst-launch-0.10 v4l2src \
>
> ! videorate \
>
> ! video/x-raw-yuv,framerate=25/2 \
>
> ! ffmpegcolorspace \
>
> ! tee name=t1 \
>
> ! queue \
>
> ! xvimagesink sync=false t1. \
>
> ! queue \
>
> ! theoraenc quality=16 \
>
> ! oggmux name=mux osssrc \
>
> ! audio/x-raw-int,rate=22050,channels=1 \
>
> ! queue \
>
> ! audioconvert \
>
> ! vorbisenc quality=0.2 \
>
> ! mux. mux. \
>
> ! queue \
>
> ! filesink location=test.ogg
>
>
>
> My code is this:
>
>
>
> ...
>
> m_pipeline = gst_pipeline_new ("pipeline");
>
> m_bin = gst_bin_new ("bin");
>
> m_source = gst_element_factory_make ("v4l2src", "video_src");
>
> m_videorate = gst_element_factory_make ("videorate", "videorate");
>
> m_framerate = gst_element_factory_make
>
> ("video/x-raw-yuv,framerate=25/2", "framerate");
>
> m_colorspace = gst_element_factory_make ("ffmpegcolorspace", "colorspace");
>
> m_tee = gst_element_factory_make ("tee name=t1", "t1");
>
> m_queue = gst_element_factory_make ("queue", "queue");
>
> m_imagesink = gst_element_factory_make ("xvimagesink sync=false t1.",
>
> "imagesink");
>
> m_queue2 = gst_element_factory_make ("queue", "queue2");
>
> m_videoenc = gst_element_factory_make ("theoraenc quality=16", "video_enc");
>
> m_mux = gst_element_factory_make ("oggmux name=mux osssrc", "mux");
>
> m_audio = gst_element_factory_make
>
> ("audio/x-raw-int,rate=22050,channels=1", "audio");
>
> m_queue3 = gst_element_factory_make ("queue", "queue3");
>
> m_audiocon = gst_element_factory_make ("audioconvert", "audio_con");
>
> m_audioenc = gst_element_factory_make ("vorbisenc quality=0.2", "audio_enc");
>
> m_mux2 = gst_element_factory_make ("mux. mux.", "mux2");
>
> m_queue4 = gst_element_factory_make ("queue", "queue4");
>
> m_file = gst_element_factory_make ("filesink location=test.ogg", "filesink");
>
>
>
> gst_bin_add_many (GST_BIN (m_bin), m_source, m_videorate, m_framerate,
>
> m_colorspace, m_tee, m_queue, m_imagesink, m_queue2, m_videoenc,
>
> m_mux, m_audio, m_queue3, m_audiocon, m_audioenc, m_mux2, m_queue4,
>
> m_file , NULL);
>
> gst_bin_add (GST_BIN (m_pipeline), m_bin);
>
> gst_element_link_many (m_source, m_videorate, m_framerate,
>
> m_colorspace, m_tee, m_queue,
>
> m_imagesink, m_queue2, m_videoenc, m_mux, m_audio, m_queue3,
>
> m_audiocon, m_audioenc, m_mux2, m_queue4, m_file , NULL);
>
>
>
> if (GST_IS_X_OVERLAY (m_imagesink))
>
> gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (m_imagesink),
>
> GPOINTER_TO_INT (window));
>
>
>
> gst_element_set_state (m_pipeline, GST_STATE_PLAYING);
>
> ...
>
>
>
> Can anyone help me on what I'm doing wrong?
>
>
>
>
>
> Thanks,
>
> Carlos Castro
>
>
>
> --
>
> Cumprimentos,
>
> Carlos Castro
>

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Steve_Bz

RE: See and record a webcam stream

Hi Carlos,

> With a little bit of work I managed to get it to work...

What did you do differently?

Regards

Steve

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