The GstRTPPayloads helper functions makes it easy to deal with static and dynamic payloads. Its main purpose is to retrieve properties such as the default clock-rate and get session bandwidth information.

GST_RTP_PAYLOAD_IS_DYNAMIC()

#define GST_RTP_PAYLOAD_IS_DYNAMIC(pt) ((pt) >= 96 && (pt) <= 127)

Check if pt is a dynamic payload type.

gst_rtp_payload_info_for_name ()

const GstRTPPayloadInfo *
gst_rtp_payload_info_for_name (const gchar *media,
                               const gchar *encoding_name);

Get the GstRTPPayloadInfo for media and encoding_name . This function is mostly used to get the default clock-rate and bandwidth for dynamic payload types specified with media and encoding name.

The search for encoding_name will be performed in a case insensitve way.

gst_rtp_payload_info_for_pt ()

const GstRTPPayloadInfo *
gst_rtp_payload_info_for_pt (guint8 payload_type);

Get the GstRTPPayloadInfo for payload_type . This function is mostly used to get the default clock-rate and bandwidth for static payload types specified with payload_type .

enum GstRTPPayload

Standard predefined fixed payload types.

The official list is at: http://www.iana.org/assignments/rtp-parameters

Audio: reserved: 19 unassigned: 20-23,

Video: unassigned: 24, 27, 29, 30, 35-71, 77-95 Reserved for RTCP conflict avoidance: 72-76

struct GstRTPPayloadInfo

struct GstRTPPayloadInfo {
  guint8       payload_type;
  const gchar *media;
  const gchar *encoding_name;
  guint        clock_rate;
  const gchar *encoding_parameters;
  guint        bitrate;
};

Structure holding default payload type information.