Get the current time in microseconds.
Get the current time in microseconds since some unspecified starting point. On platforms that support it, the time comes from a monotonic clock This property makes this time source ideal for measuring relative time. The returned values may not be monotonic on platforms where a monotonic clock is not available.
Indicates with a boolean result if the av_gettime_relative() time source is monotonic.
Sleep for a period of time. Although the duration is expressed in microseconds, the actual delay may be rounded to the precision of the system timer.