# Audio and video formats

A single audio and video codec can be selected and enabled for the duration of a video call. The following table presents the audio and video codecs that are supported on pass-through configurations (no audio transcoding):

Type | Media codec
Host audio | AMR-NB in NMS packetized format. G.723-1 in NMS packetized format (cannot be used with 3GP files). G.711 in NMS packetized format (cannot be used with 3GP files).
Host video | H.263 baseline level 10 to 30 in NMS packetized format. H.263+ profile 3 level 10 to 30 in NMS packetized format. H.264 baseline profile level 1 – 1.2 in NMS packetized format. ISO/IEC 14496-2 MPEG-4 simple profile level 0 to 3 in NMS packetized format.
IP audio | AMR narrow band audio, 3GPP version 5.3, RFC 3267 compliant for RTP payload formats. G.723.1 G.711 The following restrictions apply for conformance with RFC 3267: Received codec mode requests (CMR) are not supported. Only octet-aligned mode is supported. Forward error correction, interleaving, robust sorting, UEP/UED bit error detection schemes, and multi-channel payloads are not supported.
IP video | H.263 baseline video, as specified in annex X (level 10 to 30), RFC 2190 and RFC 2429 compliant for RTP packetization. H.263+ profile 3, as specified in annex X (level 10 to 30), RFC 2429 compliant for RTP packetization. H.264 baseline profile 1 – 1.2 video, RFC 3984 compliant (no interleaving) for RTP payload. MPEG-4 simple profile level 0 to 3 video, RFC 3016 compliant for RTP payload.

The application can set up the Video Messaging Server Interface to perform audio transcoding, at the expense of port density. The audio transcoding configuration supports any NMS-standard ADI/IVR or Fusion audio codec. However, only AMR can be used as the IVR codec for 3GP file storage. For information, see Defining an audio transcoding configuration.

See the ADI Service Developer’s Reference Manual for the list of supported host codecs and file formats. See the Fusion Developer’s Manual for a list of supported codecs on an IP interface.