You will be appreciated if you can answer my similiar question:      If video scale element is not needed(we use hardware scale), what's the proper method to notify application the video width and height ratio, implement a signal in every decoder?      If video size changes during playback, how should decoder notify videosink the new data caps, change buffer caps and pad caps directly?      Thank you! <div>2008/3/18, Bastian Winkler <<a href="mailto:buz@netbuz.org">buz@netbuz.org</a>>:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> hello daniel, you can connect to the 'notify::caps' signal on the videoscale's sink pad and query for the negotiated caps via gst_pad_get_negotiated_caps there you'll get width, height and pixel-aspect-ratio of the video. :wq buz On Tue, Mar 18, 2008 at 04:58:49AM -0700, <a href="mailto:danielkun@iremo.com">danielkun@iremo.com</a> wrote: > > Hello, > > Videoscale doesn't scale the MPEG files correctly so I'd like to set the > ratio manually. > (480x480, 4:3 videos are displayed at 1:1. 352x480, 4:3 are displayed as > 3:4...) > > My pipeline looks like this: > (filesrc, mpegdemux, queue, mpeg2dec, videoscale, capsfilter, > ffmpegcolorspace, dfbvideosink) > > How would I be able to get the ratio (size) of the video? > > Thank you, > > Daniel > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> -- /* Nobody will ever see this message :-) */ panic("Cannot initialize video hardware\n");         2.0.38 /usr/src/linux/arch/m68k/atari/atafb.c GnuPG Fingerprint: 2FFF FC48 C7DF 1EA0 00A0  FD53 8C35 FD2E 6908 7B82 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFH37TFjDX9LmkIe4IRAkN0AJ437xTR1jZmyrt+y48iF9sIMY8vUwCgsWAQ Lj+pMt3/haIg8VrrJ3sTI40= =Ynpd -----END PGP SIGNATURE----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div>