VIVOTEK
User's Manual - 191
state after duration.
it cannot accept new requests.
return
<return page>
Redirect to the page <return page> after the request is
completely assigned. The <return page> can be a full
URL path or relative path according the current path. If
you omit this parameter, it will redirect to an empty
page.
Return Code
Description
200
The request is successfully executed.
400
The request cannot be assigned, ex. incorrect parameters.
Examples:
setvi.cgi?vi0=0(10000)1(15000)0(20000)1
No multiple duration.
setvi.cgi?vi3=0
VI index is out of range.
setvi.cgi?vi=1
No VI index is specified.
503
The resource is unavailable, ex. Virtual input is waiting for next state.
Examples:
setvi.cgi?vi0=0(15000)1
setvi.cgi?vi0=1
Request 2 will not be accepted during the execution time(15 seconds).
8.23 Open Timeshift Stream (capability.timeshift > 0, timeshift_enable=1, timeshift_c<n>_s<m>_allow=1)
Note: This request requires Viewer access privileges.
Syntax:
For HTTP push server (MJPEG):
http://<servername>/<network_http_s<m>_accessname>?maxsft=<value>[&tsmode=<value>&reftime
=<value>&forcechk&minsft=<value>]
For RTSP (MP4 and H264), the user needs to input the URL below into an RTSP compatible player.
rtsp://<servername>/<network_rtsp_s<m>_accessname>?maxsft=<value>[&tsmode=<value>&reftime
=<value>&forcechk&minsft=<value>]
“n” is the channel index.
“m” is the timeshift stream index.
For details on timeshift stream, please refer to the “TimeshiftCaching” documents.
PARAMETER VALUE DEF AULT DESCRIPT ION
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
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.