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250 - User's Manual
Rewind
The Rewind function enables users to reversely playback from a specic point in time on a video
playback window. Once the occurrence of an event is ensured, this function can facilitate the
process of nding the evidences that appeared before the occurrence.
The Rewind function also applies to the Synchronous Playback mode. The following also apply:
1. The maximum playback speed is 64x. (I-frame only when speed is higher than 16x)
2. When you pull the time slider during the Rewind playback, short interruptions may occur.
3. When switching from the playback mode to the Rewind playback, the playback speed remains
the same. The same applies when switching from Rewind to the playback mode.
Limitations:
1. Short delays may occur when switching from playback to rewind, due to limitations by the
hard disk access speed and network speed.
2. When doing the forward playback, the previous frame function is not available. When doing
the rewind playback, the next frame function is not available.
3. The Rewind playback on multiple streams requires system performance resources.
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