Hi. It's hard to tell from the video - it might be hiccups or it might be chirruping noises. Some hamsters are quite vocal and do make chirruping noises. She does look a bit stressed in the video, as if she's trying to tell you something. Has anything changed just recently? ie has she just had a clean out? Does her breathing seem ok and is she active and eating and drinking ok? How is she when she's out of the cage? Does it settle at all? ie do you have a safe area she can be out of the cage - ie a playpen or even the dry bathtub. If she's not tame enough to handle on a sofa or bed (if she jumps off, she could escape).
thanks for the reply.
Has anything changed just recently?
got her a play pen

got her a new house
she doesn't seems to like the play pen. trying to escape it. so two days back me and Nora was in the play pen. after that i have not taken her.
this house small for her. but she roams in it. but not staying.
other change is climate. used to be around 24-26C raining but now 28-30C. but am using AC when the temperature goes beyond 30
after your comment took her to the play pen. not like last time. she sniffed all over me. but after few minutes i took her back to the cage.
has she just had a clean out? i did not get you
Does her breathing seem ok? looks ok
and is she active and eating and drinking ok? she is active. eating. but i don't see she drinking. only one time i caught she drinking from the bottle. i change the water everyday. she has another water pot also.
Hmm...she could be trying to tell you something

My girl Blossom is quite vocal and will squeak when she wants attention or if something isn't to her liking.
thanks for the reply.
may be she is trying to say something or looking for my attention. but this squeak happens recently. that what am worried
Have you checked her water bottle is working? Or is her wheel jammed up? I've also had times where a hamster is frantically trying to tell you something - eg the water bottle emptied itself.
She is lovely by the way
Yes. water bottle is working
one thing is her wheel was jammed. she was sleeping behind it and. she made mountain of papers that blocks the wheel. i have not cleared it yesterday. but today when she was in playpen i cleaned a bit just to wheel get working again.
today she running in wheel
but occasionally makes the sound.
Thought of getting a second opinion of a vet tomorrow morning