Query the caps otherwise the current caps could be None.
Remove outdated docstrings.
Merge branch 'fixes'
Make the slider seek the stream in VideoSeekableInput.
Make input more usable as command line script.
Remove useless debug log.
Make the PadPipeline create at runtime the element needed for the added pads.
Add new signal 'stream-added' to the PadPipeline.
Quote also the parentesis when handle paths.
Merge branch 'dynamic-element-creation'