Audio Codec Configuration
The device supports seven types of Codec (PCMU, PCMA, G729, G722, iLBC_13_3, iLBC_15_2, and L16 ) for encoding and decoding the audio data during the call session. Each type of Codec varies in terms of sound quality. You can select the specific codec with different bandwidths and sample rates flexibly according to the actual network environment.
To do the configuration on web Account > Advanced > Audio Codecs interface.
Please refer to the bandwidth consumption and sample rate for the seven codecs types below:
| Codec Type | Bandwidth Consumption | Sample Rate |
|---|---|---|
| PCMA | 64 kbit/s | 8kHZ |
| PCMU | 64 kbit/s | 8kHZ |
| G729 | 8 kbit/s | 8kHZ |
| G722 | 64 kbit/s | 16kHZ |
| iLBC_13_3 | 8,16 kbit/s | 13.3kHZ |
| iLBC_15_2 | 8,16 kbit/s | 15.2kHZ |
| L16 | 128 kbit/s | variable |
Video Codec Configuration
IT83 series supports VP8, H263, H264, H265 codec that provides better video quality at a much lower bit rate with different video quality and payload. To do the configuration on web Account > Advanced > Video Codecs interface. Choose an available video codec and set up the codec parameters.
Parameter Set-up:
- Name: check to select the video codec format for the indoor monitor video stream. H264 is the video codec by default.
- Resolution:
- Select the code resolution for H263 among three options: QCIF, CIF, 4CIF.
- Select the code resolution for H264 among five options: QCIF, CIF, 4CIF, VGA, 720P.
- Select the code resolution for VP8 among five options: QCIF, CIF, 4CIF, VGA, 720P.
- Bitrate:
- Select the video stream bit rate for H263 (ranging from 128-512).
- Select the video stream bit rate for H264 (ranging from 512-2048).
- Select the video stream bit rate for VP8 (ranging from 128-512).
The greater the bitrate, the data transmitted every second is greater in amount therefore the video will be clearer.
- Payload: select the payload type (ranging from 90-119) to configure audio/video configuration file. The default payload is 104.