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VIVOTEK
218 - User's Manual
“m” is the timeshift stream index.
For details on timeshift stream, please refer to the “TimeshiftCaching” documents.
PARAMETER VALUE DEFAULT DESCRIPTION
maxsft <positive
interger>
0 Request cached stream at most how many seconds ago.
tsmode normal,
adaptive
normal Streaming mode:
normal => Full FPS all the time.
adaptive => Default send only I-frame for MP4 and
H.264, and send 1 FPS for MJPEG. If DI or motion window
are triggered, the streaming is changed to send full FPS
for 10 seconds.
(*Note: this parameter also works on non-timeshift
streams.)
reftime mm:ss The time
camera receives
the request.
Reference time for maxsft and minsft.
(This provides more precise time control to eliminate the
inaccuracy due to network latency.)
Ex: Request the streaming from 12:20
rtsp://10.0.0.1/live.sdp?maxsft=10&reftime=12:30
forcechk N/A N/A Check if the requested stream enables timeshift, feature
and if minsft is achievable.
If false, return “415 Unsupported Media Type”.
minsft <positive
interger>
0 How many seconds of cached stream client can accept at
least.
(Used by forcechk)
Return Code Description
400 Bad Request Request is rejected because some parameter values are illegal.
415 Unsupported Media Type Returned, if forcechk appears, when minsft is not achievable or the
timeshift feature of the target stream is not enabled.