Peugeot 206 1.4 hdi diesel noisy and shaky engine

i have a 2005 peugeot 206 1.4 hdi around 180.000 kms.
recently, the engine started to run very noisy and extremely vibrating/shaking, some kind of rapid ticking sound comes out of it (from the timing belt side i guess?). it totally gives me headaches on long trips. i’ve diagnosed the car 3 times at bosch services and other services and the device showed no errors or malfunctions. the problem gets more severe after long running times and high revs. several mechanics told me various things like,

it is okay nothing to worry with,
injectors nozzles or valves may be corrupt,
the timing belt system has to be replaced,
gasket has to be replaced,
eccentric shaft became unbalanced (really?)

there is totally no consistency among different comments. i am totally lost and don’t know what to do.
i filmed the engine at first start in the morning: https://www.youtube.com/watch?v=pcs7EVdOG6o
the problematic noise can be heard distinctively starting from 00:06 mark, excessive vibration can be seen on engine block.
anybody had similar problems?

“anybody had similar problems?”

Unless somebody else from Europe, or Africa, or–perhaps–Asia happens to stumble upon this thread, I doubt that you will find anyone in this US-based forum who has had similar problems.

Peugeot vehicles have not been sold in The US for a couple of decades, although the company keeps…threatening… to return to the USA/Canada marketplace. Every one of their planned re-entries to this marketplace over the years has failed to materialize, although they are…threatening…once again to return: