<blockquote style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;" class="gmail_quote">From: Thiago Sousa Santos <<a href="mailto:thiago.sousa.santos@collabora.co.uk">thiago.sousa.santos@collabora.co.uk</a>> To: <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> Date: Tue, 15 Mar 2011 13:14:25 -0300 Subject: Re: Pushing images into a gstreamer pipeline On Tue, 2011-03-15 at 17:05 +0100, Rodrigo Benenson wrote: > Hello gst developers ! > > After playing around with some toy applications, exploring the > documentation and googling around (including this mailing list > archives) I am still puzzled for what I would think is a rather common > use case. > > I have an existing code that generates images (in memory) and I would > like to push these images into a gstreamer pipeline (to create a flv > video at the end). > > I could not find an "obvious way to do it". My best guess will be to > dig in the source code of GstMultiFileSrc and its parent GstPushSrc, > to figure it out. > > Could any of you point me out to the "obvious way" of doing this ? > Is it there any related piece of documentation/tutorial/example on this ? You want to use 'appsrc': <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsrc.html" target="_blank">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-appsrc.html</a> There should be examples in the source of gst-plugins-base, under tests/examples/app/</blockquote><div> Using appsrc would indeed work. IMHO the stumbling block will be figuring out how to put your image data into the proper format of a GstBuffer with a "caps" that ffmpegcolorspace can accept. At this point, poking around the source for the videoscale element is the best I've found :( Are there any elements to draw lines, circles, etc. into a GstBuffer to overlay onto a video frame? </div>