How to change framerate in REALTIME when video is PLAYING?
fb8fb8 at gmail.com
Sat Jul 9 16:16:02 PDT 2011
But The website you posted has not existed...
Could you please give me another example about adjusting the caps filter?
Thank you very much!
On Thu, Mar 10, 2011 at 2:58 AM, Andrey Nechypurenko <
andreynech at googlemail.com> wrote:
> Hi Tom,
> > I use
> > gst-launch filesrc "location=video/1.MPG" ! decodebin ! videorate !
> > video/x-raw-yuv, width=640,height=480,framerate=25/1 ! ffmpegcolorspace !
> > jpegenc ! multipartmux ! tcpserversink host=192.168.2.1 port=$portNumber
> > to stream a video and can change the video frame rate in this way.
> > But in this way the frame rate is fixed (i.e., framerate=25/1 here).
> > I want to change the framerate in REALTIME when video is PLAYING ---
> > during the streaming of this video, I can change the framerate anytime I
> > want.
> Then you need to modify the pipeline from your application. In
> particular, you need to adjust the caps filter. Here you can find an
> example how to do it:
> It changes width and height property of the named (qos-caps) caps
> filter by pausing the videoscale element in front of it, updating
> width and height properties and then un-pausing the videoscale. So in
> your case you can update the framerate property. However, as Kapil
> pointed out to work properly, the downstream elements should be able
> to re-negotiate the new format.
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
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