playbin2

[Akihiro TSUKADA]

I know almost nothing about embedded world,
but if your video-sink cannot hold an image and
send EOS immediately after rendering it,
then the followings converts an image to a video stream
(and worked on my PC).

gst-launch playbin2 uri=file:///foo.img \
 video-sink="videorate ! video/x-raw-yuv,framerate=1/10 ! autovideosink"
 or
gst-launch playbin2 uri=file:///foo.img \
 video-sink="imagefreeze ! autovideosink"

thus, you can build a sink-bin like the above ones and set it to the
"video-sink" property in your script, like described in
http://pygstdocs.berlios.de/pygst-tutorial/playbin.html.

One problem though is that it may be impossible to set/change video-sink
property in "about-to-finish" event handler.
In that case, maybe you can write a source-bin element with a custom URI
handler, like dvbbasebin,
which consists of filesrc, videorate and caps-filters and converts an
image to video stream.

for example,
mysrcbin :=
  filesrc location=<from URI> ! jpegparse ! videorate ! \
     image/jpeg,framerate=1/<LENGTH>
then you can set "myproto:///foo.jpg" in about-to-finish handler.

but I am afraid that it may be easier to build another pipeline for
displaying images, or else, to display images directly in your script
instead of using gstreamer.

cheers,
akihiro