Thanks for this! Agree with the need to not hide this, but disagree with this solution. I think we need to find a way to give the error back to the caller, but not sure of the best API to do that. Possibly something along the lines of

Pipeline.launch(String description, List<String> errors);

???

Could also be a chance to move this into Gst. Don't like the confusion with the same named method in Bin.

So, possibly -

Pipeline Gst.parseLaunch(String description, List<String> errors);
Bin Gst.parseBinFromDescription(String description, List<String> errors);