How can I display jpg, png, bmp files at the specified location and size?

[gotsring]

Are you just referring to the output window that's spawned? I'm not sure how
much control you have over that from the command line. You might have to
write a small application using GTK to host the gstreamer output, then
resize the window as needed.

Using the same pipeline, I am able resize the spawned window, but I'm using
d3dvideosink, so it might just be a limitation of the sink you're using. I
have no experience with waylandsink, but it appears the only properties that
you can control are the display it shows on, and whether it's fullscreen.
See docs here: 
https://gstreamer.freedesktop.org/documentation/waylandsink/index.html?gi-language=c
<https://gstreamer.freedesktop.org/documentation/waylandsink/index.html?gi-language=c>  




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