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  • Security Systems > Camera > NW Camera ( feature ) > When recording audio picked up by the camera under an H.264/MPEG-4 multicast environment, should I switch to dual stream of H.264 or MPEG-4 and JPEG? [i-PRO / i-PRO smart HD]
  • No : 6
  • Open Date : 2013/03/04 13:40
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When recording audio picked up by the camera under an H.264/MPEG-4 multicast environment, should I switch to dual stream of H.264 or MPEG-4 and JPEG? [i-PRO / i-PRO smart HD]

Answer

The MPEG-4 multicast environment also supports audio recording.

Tip: The relationships between streaming/compression methods and sound functions are as follows.
(1) JPEG only (unicast) -> Supports two-way audio
(2) MPEG only (unicast) -> Supports two-way audio
(3) MPEG only (multicast) -> Only listening (supports audio streaming from camera to PC/recorder only)
(4) JPEG+MPEG (JPEG unicast, MPEG multicast) -> JPEG supports two-way audio. MPEG supports only listening.

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