Vivotek VS8801 User Manual page 179

minsft <positive
integer>
Return Code
400 Bad Request
415 Unsupported Media Type
<End of document>
URL Command Document for VS8401-VVTK
0 How many seconds of cached stream client can
accept at least.
(Used by forcechk)
Description
Request is rejected because some parameter values are illegal.
Returned, if forcechk appears, when minsft is not achievable or
the timeshift feature of the target stream is not enabled.
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User's Manual - 179