Not sure but just a thought, Maybe you can apply seeking on the video part of pipeline and not on the whole pipeline. So make a video bin having the video part before mixing and seek there ? Note :Just an idea, havent validated or thought much about practical issues :) Thanks Kapil <div class="gmail_quote">2010/5/28 Juan Felipe Mogollón Rodríguez <<a href="mailto:fmogollon@vicomtech.org">fmogollon@vicomtech.org</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi I am trying a build an applicaction that mixes two diferent videos and shows them with a background image following the next pipeline: gst-launch filesrc location=video1.ogg ! decodebin ! videobox border-alpha=0 alpha=1 top=-375 bottom=0 left=-250 right=0 ! alpha method=3 angle=90 ! videomixer name=mixer ! ffmpegcolorspace ! xvimagesink filesrc location=video2.ogg ! decodebin ! videobox border-alpha=0 alpha=1 top=-375 bottom=0 left=-400 right=0 ! alpha method=3 angle=90 ! mixer. filesrc location=background.jpg ! decodebin ! imagefreeze ! alpha method=0 target-r=0 target-g=0 target-b=0 ! videoscale ! video/x-raw-yuv, width=1200, height=800 ! mixer. When I try to seek the videos, I am always getting a seek error, I think that the error appears because of the still image that is created to be used as background, I have tried with multifilesrc and with imagefreeze, but I always get that seek error. Does anybody knows another way to get a static background image that can be seekable? Thanks in advance. Regards. Felipe. ------------------------------------------------------------------------------ _______________________________________________ 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" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div> -- <a href="http://www.mediamagictechnologies.com">www.mediamagictechnologies.com</a> (Gstreamer, ffmpeg, Red5, Streaming) twitter handle: @gst_kaps <a href="http://www.linkedin.com/in/kapilagrawal">http://www.linkedin.com/in/kapilagrawal</a>