How to set window height & width using Playbin
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Hi,
Here are the descriptions of two problem I am facing:
Problem 1 - I am writing an application in which video played using Gstreamer will be rendered in a window embedded in another window. So I created an QT application and then created the embedded Window, created a Playbin pipeline, and pass the window handle using gst_x_overlay_set_xwindow_id() API. It plays the video, but there is one small problem, when each video starts, just playing the first frame it stretches out to take the size of whole embedded window. The reason may be that I am not passing the window height & width to the Playbin. Could you please tell me how to pass the window height & width to the pipeline?
Problem 2 – I am playing MP3 files using Playbin in my application, when I increase the volume of the audio using g_object_set(), I can hear some noise in the sound. Is there any particular decoder I need to install? I installed the following plugins: · gst-plugins-base-0.10.22-3.6 · gst-plugins-good-0.10.14-2.4 · gst-plugins-ugly-0.10.11 · gstreamer-0.10.22-1.24 · gst-plugins-bad-0.10.11 · libmad-0.15.1b
Deb
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Re: [gst-devel] How to set window height & width using Playbin
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Debojyoti,
> It plays the video, but there is one small problem, when each video starts, just playing the first frame it stretches out to take the size of whole embedded window. The reason may be that I am not passing the window height & width to the Playbin. Could you please tell me how to pass the window height & width to the pipeline? This is the expected behaviour: playbin puts a rescaler into the video pipeline so that the output fills the window it is offered. That usually works well, but if you want to always show the video at its native size, I think there are two options: 1) Let playbin create its own output window, which should be native size, then reparent it into your application. 2) Reach inside playbin to query the capabilities at the output of the video decoder and set the output window to that size. Giles From: [hidden email] [mailto:[hidden email]] Sent: 20 January 2010 14:52 To: [hidden email] Subject: [gst-devel] How to set window height & width using Playbin Hi, Here are the descriptions of two problem I am facing: Problem 1 - I am writing an application in which video played using Gstreamer will be rendered in a window embedded in another window. So I created an QT application and then created the embedded Window, created a Playbin pipeline, and pass the window handle using gst_x_overlay_set_xwindow_id() API. It plays the video, but there is one small problem, when each video starts, just playing the first frame it stretches out to take the size of whole embedded window. The reason may be that I am not passing the window height & width to the Playbin. Could you please tell me how to pass the window height & width to the pipeline? Problem 2 - I am playing MP3 files using Playbin in my application, when I increase the volume of the audio using g_object_set(), I can hear some noise in the sound. Is there any particular decoder I need to install? I installed the following plugins: . gst-plugins-base-0.10.22-3.6 . gst-plugins-good-0.10.14-2.4 . gst-plugins-ugly-0.10.11 . gstreamer-0.10.22-1.24 . gst-plugins-bad-0.10.11 . libmad-0.15.1b Regards, Deb ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Debsu
Thanks a lot for your reply. Your two options are perfectly right, but here I do have separate requirement. The requirement is my application will create its own window and then will pass the window height & width to the Playbin for video playback. I am able to pass the window id by using gst_x_overlay_set_xwindow_id(), but then video is showing in small section in the window for the first frame & then stretches to fill-up the full window. I am finding way to fill-up the window from the very first frame so that the stretching effect will not come.
Regards, Dev ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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In reply to this post by Giles Atkinson
Hi Giles,
Thanks a lot for your reply. But I want to set the video height & width using playbin. So I attached a video sink xvimagesink to playbin, it is not playing anything. Also I am unable to set the height & width in video sink. Is there any other method to set video height & width using playbin? Regards, Deb |
Re: [gst-devel] How to set window height & width using Playbin
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Deb,
I am afraid your questions go beyond my knowledge. I have developed an application using playbin, but we are happy with the default behaviour. We find it works well to control width and height by changing the size of the output window directly with XConfigureWindow(). Playbin then rescales the video to fit the window. Giles -----Original Message----- From: Debsu [mailto:[hidden email]] Sent: 22 January 2010 07:40 To: [hidden email] Subject: Re: [gst-devel] How to set window height & width using Playbin Hi Giles, Thanks a lot for your reply. But I want to set the video height & width using playbin. So I attached a video sink xvimagesink to playbin, it is not playing anything. Also I am unable to set the height & width in video sink. Is there any other method to set video height & width using playbin? Regards, Deb -- View this message in context: http://n4.nabble.com/How-to-set-window-height-width-using-Playbin-tp1018443p1099823.html Sent from the GStreamer-devel mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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Hi Giles, Ok, no problem. By default setting,
playbin can rescale the video to fit the window, but it creates the stretching
effect which I don’t want. Anyway, thanks for your help. Regards, Debojyoti From: Giles Atkinson
[via GStreamer-devel] [mailto:[hidden email]] Deb, View message @ http://n4.nabble.com/How-to-set-window-height-width-using-Playbin-tp1018443p1099895.html
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Re: [gst-devel] How to set window height & width using Playbin
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Hi,
Is it about aspect ratio ? (I do not think so but just to be sure) Well, why not doing this: - retrieve the native width & height from negociated caps just before the xvimagesink (using gstreamer api so) - set your QWidget (more espcially you should use a QFrame) to this size - put your widget anywhere inside a kind of main widget. And so you would be able to control the way the video is streched of not, just by choicing by your self the size of the QFrame, and the behaviour of the QFrame inside its parent widget. Julien 2010/1/22 Debsu <[hidden email]>
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Hi Julien,
My requirement is just the reverse, I need to create the XWindow first then send its height & width to the Playbin somehow, so that the video will take the full size of that XWindow. Also it must not have any stretching effect. Currently the first frame of the video is small then it stretches out to fill the whose window size. Regards, Deb |
Re: [gst-devel] How to set window height & width using Playbin
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Hi,
The result you want is possible. But you I think you can't achieve it doing your steps. (it would require to add the option in gst_xoverlay interface, and then implement it in xvimagesink) But you can achieve it doing my suggested steps (from my previous answer). Julien 2010/1/22 Debsu <[hidden email]>
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Hi Julien, You are absolutely right. I achieved that
in the following way:
Thanks all of your help. Regards, Deb Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com |
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