I'm testing switching video codecs live with farsight2, whenever a new video codec appears, a new pad comes out of fs2 and I like it to an input-selector with "select-all" set to True (thats then connected to an xvimagesink).

It fails because every time a new pad is connected, it also sends a NEWSEGMENT event that input-selector forwards almost blindly and that the sink then accumulates.

I guess that input-selector should do much more complicated magic with the segments and combine them in a smart way and check if an update should be sent instead of a newsegment (or maybe nothing if they match).. Maybe even in the case of select-all, it should just retimestamp every buffer to the running time and only send a [0,-1] segment out or something...

Here is a small demo program:

import pygst
pygst.require('0.10')
import gst,time

pipeline = gst.parse_launch ("videotestsrc is-live=1 ! input-selector select-all=1 name=a ! xvimagesink")
pipeline.set_state(gst.STATE_PLAYING);
time.sleep(5)

vts = gst.element_factory_make("videotestsrc")
vts.set_property("pattern", 1)
pipeline.add(vts)
vts.link(pipeline.get_by_name("a"))
pipeline.set_state(gst.STATE_PLAYING);
print "added second source"

time.sleep(10)
pipeline.set_state(gst.STATE_NULL);