SampleInterval
Analysis tasks usually do not process every frame of a video.
This parameter specifies the minimum interval between frames that are selected to be analyzed. For example, if you set SampleInterval=125ms
then any two frames analyzed by the task will be separated by at least 125 milliseconds. This means that at most eight frames are analyzed for every second of video.
If the parameter IngestRate is set to 0
, the interval between the frames selected for analysis will be as close as possible to SampleInterval
.
If the parameter IngestRate is set to 1
, the interval between the frames selected for analysis will also be as close as possible to SampleInterval
. However, if the analysis task cannot process frames at this rate, it will increase the sample interval. For example, if you set SampleInterval=125ms
but the task is not able to analyze eight frames per second, it increases the sample interval and processes fewer frames than you requested.
In most cases OpenText recommends that you use the default value of SampleInterval
. If you have set IngestRate=1
and a task significantly increases the sample interval, or if you have set IngestRate=0
and processing takes a long time, it might be due to the server having insufficient resources.
NOTE: When the input for the analysis task is provided by another analysis task, the SampleInterval
parameter is ignored. Media Server attempts to analyze all of the input frames. If this is not possible, for example due to the server having insufficient resources, Media Server increases the sample interval of the first analysis task.
Type: |
Time duration
The value of this parameter is a time duration. Specify a value using one or more of the following units: days d hours h minutes m seconds s milliseconds ms microseconds us For example, all of the following are equivalent: 1minute 3seconds |
Default: | 100ms |
Required: | No |
Configuration Section: | TaskName |
Example: | SampleInterval=125ms
|
See Also: | IngestRate |