// Extras
extras$_ {t:Type} (## 8) [ length:(## 8) extra:t ] = Extras t;

extraStreamFlags#01 streamId:(## 8) flags:# enabled:flags.0?true dtx:flags.1?true extraEC:flags.2?true paused:flags.3?true = ExtraSignaling;
extraStreamCsd#02 streamId:(## 8) width:(## 16) height:(## 16) count:(## 8) [ length:(## 8) codecSpecificData:bytes ]= ExtraSignaling;

extraLanEndpoint#03 address:# port:(## 16) = ExtraSignaling;
extraIpv6Endpoint#07 address:(## 128) port:(## 16) = ExtraSignaling;

extraNetworkChanged#04 flags:# dataSavingEnabled:flags.0?true = ExtraSignaling;

extraGroupCallKey#05 key:(## 256) = ExtraSignaling;
extraGroupCallUpgrade#06 = ExtraSignaling;

// Stream info
streamInfo$_ streamId:(## 8) type:(## 8) codec:# frameDurationIgnored:(## 16) enabled:(## 8)= StreamInfo;

// Packet
packet$_ type:(## 8) ackSeq:# seq:# ackMask:# flags:(## 8) extras:flags.0?Extras<ExtraSignaling> recvTS:flags.1?int data:payload = Packet;

payloadInit#0 peerVersion:# minVersion:# flags:# audioCodecs:Extras<int> decoders:Extras<int> maxResolution:(## 8) dataSavingEnabled:flags.0?true groupCallSupported:flags.1?true videoSendSupported:flags.2?true videoRecvSupported:flags.3?true = Payload;
payloadInitAck#1 peerVersion:# minVersion:# streams:Extras<StreamInfo> = Payload;

payloadStreamData#4
    streamId:(## 6) 
    flags:(## 2)

    length:(## flags.0 ? 11 : 8)
    eFlags:(## flags.0 ? 5 : 0)
    
    fragmented:eFlags.4?true
    keyframe:eFlags.5?true

    pts:#
    data:bytes
    
    extraFEC:eFlags.3?Extras<Bytes>

    = Payload;

payloadPing#6 = Payload;
payloadPong#7 seq:# = Payload;

payloadNop#E = Payload;

// Deprecated
payloadStreamDataX2#8 a:payloadStreamData b:payloadStreamData = Payload;
payloadStreamDataX3#9 a:payloadStreamData b:payloadStreamData c:payloadStreamData = Payload;