Have you looked inside her beak and throat for any lesions or canker?
Where are you located in the world?
Is she able to eat/drink anything at all with her doing that?
If vet care is an option, that would be good.
If you don't find an obstruction in her throat and her crop is not...
Upload the video to YouTube and provide a link.
A little more info?
How old is she?
Does she lay eggs...if so, when was the last one...does she have any bloat/fluid in her abdomen?
Is her crop empty in the morning before she eats/drinks?
Have you added any new birds to your flock within the...