in comments, use specification titles instead of URLs (#830)

README.md

@@ -154,7 +154,7 @@ In RTSP, media streams are transmitted by using RTP packets, which are encoded i
 |[RFC4567, Key Management Extensions for Session Description Protocol (SDP) and Real Time Streaming Protocol (RTSP)](https://datatracker.ietf.org/doc/html/rfc4567)|secure variants|
 |[RFC3830, MIKEY: Multimedia Internet KEYing](https://datatracker.ietf.org/doc/html/rfc3830)|secure variants|
 |[RTP Payload Format For AV1 (v1.0)](https://aomediacodec.github.io/av1-rtp-spec/)|payload formats / AV1|
-|[RTP Payload Format for VP9 Video](https://datatracker.ietf.org/doc/html/draft-ietf-payload-vp9-16)|payload formats / VP9|
+|[RFC9628, RTP Payload Format for VP9 Video](https://datatracker.ietf.org/doc/html/rfc9628)|payload formats / VP9|
 |[RFC7741, RTP Payload Format for VP8 Video](https://datatracker.ietf.org/doc/html/rfc7741)|payload formats / VP8|
 |[RFC7798, RTP Payload Format for High Efficiency Video Coding (HEVC)](https://datatracker.ietf.org/doc/html/rfc7798)|payload formats / H265|
 |[RFC6184, RTP Payload Format for H.264 Video](https://datatracker.ietf.org/doc/html/rfc6184)|payload formats / H264|

pkg/format/ac3.go

@@ -11,7 +11,7 @@ import (
 )
 
 // AC3 is the RTP format for the AC-3 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc4184
+// Specification: RFC4184
 type AC3 struct {
 	PayloadTyp   uint8
 	SampleRate   int

pkg/format/av1.go

@@ -10,7 +10,7 @@ import (
 )
 
 // AV1 is the RTP format for the AV1 codec.
-// Specification: https://aomediacodec.github.io/av1-rtp-spec/
+// Specification: RTP Payload Format For AV1 (v1.0)
 type AV1 struct {
 	PayloadTyp uint8
 	LevelIdx   *int

pkg/format/g711.go

@@ -11,7 +11,7 @@ import (
 )
 
 // G711 is the RTP format for the G711 codec, encoded with mu-law or A-law.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3551
+// Specification: RFC3551
 type G711 struct {
 	PayloadTyp   uint8
 	MULaw        bool

pkg/format/g722.go

@@ -7,7 +7,7 @@ import (
 )
 
 // G722 is the RTP format for the G722 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3551
+// Specification: RFC3551
 type G722 struct {
 	// in Go, empty structs share the same pointer,
 	// therefore they cannot be used as map keys

pkg/format/g726.go

@@ -8,7 +8,7 @@ import (
 )
 
 // G726 is the RTP format for the G726 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3551
+// Specification: RFC3551
 type G726 struct {
 	PayloadTyp uint8
 	BitRate    int

pkg/format/h264.go

@@ -16,7 +16,7 @@ import (
 )
 
 // H264 is the RTP format for the H264 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6184
+// Specification: RFC6184
 type H264 struct {
 	PayloadTyp        uint8
 	SPS               []byte

pkg/format/h265.go

@@ -14,7 +14,7 @@ import (
 )
 
 // H265 is the RTP format for the H265 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7798
+// Specification: RFC7798
 type H265 struct {
 	PayloadTyp uint8
 	VPS        []byte

pkg/format/klv.go

@@ -7,7 +7,7 @@ import (
 )
 
 // KLV is the RTP format for KLV data.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6597
+// Specification: RFC6597
 type KLV struct {
 	PayloadTyp uint8
 }

pkg/format/lpcm.go

@@ -11,8 +11,8 @@ import (
 )
 
 // LPCM is the RTP format for the LPCM codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3190
-// Specification: https://datatracker.ietf.org/doc/html/rfc3551
+// Specification: RFC3190
+// Specification: RFC3551
 type LPCM struct {
 	PayloadTyp   uint8
 	BitDepth     int

pkg/format/mjpeg.go

@@ -7,7 +7,7 @@ import (
 )
 
 // MJPEG is the RTP format for the Motion-JPEG codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2435
+// Specification: RFC2435
 type MJPEG struct {
 	// in Go, empty structs share the same pointer,
 	// therefore they cannot be used as map keys

pkg/format/mpeg1_audio.go

@@ -7,7 +7,7 @@ import (
 )
 
 // MPEG1Audio is the RTP format for a MPEG-1/2 Audio codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type MPEG1Audio struct {
 	// in Go, empty structs share the same pointer,
 	// therefore they cannot be used as map keys

pkg/format/mpeg1_video.go

@@ -7,7 +7,7 @@ import (
 )
 
 // MPEG1Video is the RTP format for a MPEG-1/2 Video codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type MPEG1Video struct {
 	// in Go, empty structs share the same pointer,
 	// therefore they cannot be used as map keys

pkg/format/mpeg4_audio.go

@@ -13,8 +13,8 @@ import (
 )
 
 // MPEG4Audio is the RTP format for a MPEG-4 Audio codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3640
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416#section-7.3
+// Specification: RFC3640
+// Specification: RFC6416, section 7.3
 type MPEG4Audio struct {
 	// payload type of packets.
 	PayloadTyp uint8

pkg/format/mpeg4_video.go

@@ -14,7 +14,7 @@ import (
 )
 
 // MPEG4Video is the RTP format for a MPEG-4 Video codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416#section-7.1
+// Specification: RFC6416, section 7.1
 type MPEG4Video struct {
 	PayloadTyp     uint8
 	ProfileLevelID int

pkg/format/mpegts.go

@@ -5,7 +5,7 @@ import (
 )
 
 // MPEGTS is the RTP format for MPEG-TS.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type MPEGTS struct {
 	// in Go, empty structs share the same pointer,
 	// therefore they cannot be used as map keys

pkg/format/opus.go

@@ -11,8 +11,8 @@ import (
 )
 
 // Opus is the RTP format for the Opus codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7587
-// Specification: https://webrtc-review.googlesource.com/c/src/+/129768
+// Specification: RFC7587
+// Specification: Multiopus in libwebrtc
 type Opus struct {
 	PayloadTyp   uint8
 	ChannelCount int

pkg/format/rtpac3/decoder.go

@@ -29,7 +29,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a AC-3 decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc4184
+// Specification: RFC4184
 type Decoder struct {
 	firstPacketReceived bool
 	fragments           [][]byte

pkg/format/rtpac3/encoder.go

@@ -31,7 +31,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a AC-3 encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc4184
+// Specification: RFC4184
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpav1/decoder.go

@@ -36,7 +36,7 @@ func tuSize(tu [][]byte) int {
 }
 
 // Decoder is a RTP/AV1 decoder.
-// Specification: https://aomediacodec.github.io/av1-rtp-spec/
+// Specification: RTP Payload Format For AV1 (v1.0)
 type Decoder struct {
 	firstPacketReceived bool
 	fragments           [][]byte

pkg/format/rtpav1/encoder.go

@@ -22,7 +22,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/AV1 encoder.
-// Specification: https://aomediacodec.github.io/av1-rtp-spec/
+// Specification: RTP Payload Format For AV1 (v1.0)
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtph264/decoder.go

@@ -47,7 +47,7 @@ func auSize(au [][]byte) int {
 }
 
 // Decoder is a RTP/H264 decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6184
+// Specification: RFC6184
 type Decoder struct {
 	// indicates the packetization mode.
 	PacketizationMode int

pkg/format/rtph264/encoder.go

@@ -48,7 +48,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a RTP/H264 encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6184
+// Specification: RFC6184
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtph265/decoder.go

@@ -37,7 +37,7 @@ func auSize(au [][]byte) int {
 }
 
 // Decoder is a RTP/H265 decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7798
+// Specification: RFC7798
 type Decoder struct {
 	// indicates that NALUs have an additional field that specifies the decoding order.
 	MaxDONDiff int

pkg/format/rtph265/encoder.go

@@ -30,7 +30,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a RTP/H265 encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7798
+// Specification: RFC7798
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpklv/decoder.go

@@ -18,7 +18,7 @@ var ErrNonStartingPacketAndNoPrevious = errors.New(
 	"received a non-starting fragment without any previous starting fragment")
 
 // Decoder is a RTP/KLV decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6597
+// Specification: RFC6597
 type Decoder struct {
 	// buffer for accumulating KLV unit data across multiple packets
 	buffer []byte

pkg/format/rtpklv/encoder.go

@@ -21,7 +21,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/KLV encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6597
+// Specification: RFC6597
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtplpcm/decoder.go

@@ -7,7 +7,7 @@ import (
 )
 
 // Decoder is a RTP/LPCM decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3190
+// Specification: RFC3190
 type Decoder struct {
 	BitDepth     int
 	ChannelCount int

pkg/format/rtplpcm/encoder.go

@@ -22,7 +22,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/LPCM encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3190
+// Specification: RFC3190
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpmjpeg/decoder.go

@@ -160,7 +160,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/M-JPEG decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2435
+// Specification: RFC2435
 type Decoder struct {
 	firstPacketReceived bool
 	fragments           [][]byte

pkg/format/rtpmjpeg/encoder.go

@@ -25,7 +25,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/M-JPEG encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2435
+// Specification: RFC2435
 type Encoder struct {
 	// SSRC of packets (optional).
 	// It defaults to a random value.

pkg/format/rtpmpeg1audio/decoder.go

@@ -28,7 +28,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/MPEG-1/2 Audio decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type Decoder struct {
 	firstPacketReceived bool
 	fragments           [][]byte

pkg/format/rtpmpeg1audio/encoder.go

@@ -38,7 +38,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a RTP/MPEG-1/2 Audio encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type Encoder struct {
 	// SSRC of packets (optional).
 	// It defaults to a random value.

pkg/format/rtpmpeg1video/decoder.go

@@ -31,7 +31,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/MPEG-1/2 Video decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type Decoder struct {
 	fragments          [][]byte
 	fragmentsSize      int

pkg/format/rtpmpeg1video/encoder.go

@@ -38,7 +38,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a RTP/MPEG-1/2 Video encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc2250
+// Specification: RFC2250
 type Encoder struct {
 	// SSRC of packets (optional).
 	// It defaults to a random value.

pkg/format/rtpmpeg4audio/decoder.go

@@ -19,8 +19,8 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/MPEG-4 Audio decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3640
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416#section-7.3
+// Specification: RFC3640
+// Specification: RFC6416, section 7.3
 type Decoder struct {
 	// use RFC6416 (LATM) instead of RFC3640 (generic).
 	LATM bool

pkg/format/rtpmpeg4audio/encoder.go

@@ -21,8 +21,8 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/MPEG-4 audio encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc3640
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416#section-7.3
+// Specification: RFC3640
+// Specification: RFC6416, section 7.3
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8
@@ -79,7 +79,7 @@ func (e *Encoder) Init() error {
 	return nil
 }
 
-// Encode encodes AUs into RTP packets.
+// Encode encodes AUs (non-LATM) or AudioMuxElements (LATM) into RTP packets.
 func (e *Encoder) Encode(aus [][]byte) ([]*rtp.Packet, error) {
 	if !e.LATM {
 		return e.encodeGeneric(aus)

pkg/format/rtpmpeg4video/decoder.go

@@ -22,7 +22,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/MPEG-4 Video decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416
+// Specification: RFC6416
 type Decoder struct {
 	fragments          [][]byte
 	fragmentsSize      int

pkg/format/rtpmpeg4video/encoder.go

@@ -29,7 +29,7 @@ func packetCount(avail, le int) int {
 }
 
 // Encoder is a RTP/MPEG-4 Video encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc6416
+// Specification: RFC6416
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpsimpleaudio/decoder.go

@@ -4,7 +4,7 @@ import (
 	"github.com/pion/rtp"
 )
 
-// Decoder is a RTP/simple audio decoder.
+// Decoder is a RTP decoder for audio codecs that fit in a single packet.
 type Decoder struct{}
 
 // Init initializes the decoder.

pkg/format/rtpsimpleaudio/encoder.go

@@ -21,7 +21,7 @@ func randUint32() (uint32, error) {
 	return uint32(b[0])<<24 | uint32(b[1])<<16 | uint32(b[2])<<8 | uint32(b[3]), nil
 }
 
-// Encoder is a RTP/simple audio encoder.
+// Encoder is a RTP encoder for audio codecs that fit in a single packet.
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpvp8/decoder.go

@@ -29,7 +29,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/VP8 decoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7741
+// Specification: RFC7741
 type Decoder struct {
 	firstPacketReceived bool
 	fragmentsSize       int

pkg/format/rtpvp8/encoder.go

@@ -23,7 +23,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/VP8 encoder.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7741
+// Specification: RFC7741
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/rtpvp9/decoder.go

@@ -29,7 +29,7 @@ func joinFragments(fragments [][]byte, size int) []byte {
 }
 
 // Decoder is a RTP/VP9 decoder.
-// Specification: https://datatracker.ietf.org/doc/html/draft-ietf-payload-vp9-16
+// Specification: RFC9628
 type Decoder struct {
 	firstPacketReceived bool
 	fragmentsSize       int

pkg/format/rtpvp9/encoder.go

@@ -23,7 +23,7 @@ func randUint32() (uint32, error) {
 }
 
 // Encoder is a RTP/VP9 encoder.
-// Specification: https://datatracker.ietf.org/doc/html/draft-ietf-payload-vp9-16
+// Specification: RFC9628
 type Encoder struct {
 	// payload type of packets.
 	PayloadType uint8

pkg/format/speex.go

@@ -8,7 +8,7 @@ import (
 )
 
 // Speex is the RTP format for the Speex codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc5574
+// Specification: RFC5574
 type Speex struct {
 	PayloadTyp uint8
 	SampleRate int

pkg/format/vorbis.go

@@ -10,7 +10,7 @@ import (
 )
 
 // Vorbis is the RTP format for the Vorbis codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc5215
+// Specification: RFC5215
 type Vorbis struct {
 	PayloadTyp    uint8
 	SampleRate    int

pkg/format/vp8.go

@@ -10,7 +10,7 @@ import (
 )
 
 // VP8 is the RTP format for the VP8 codec.
-// Specification: https://datatracker.ietf.org/doc/html/rfc7741
+// Specification: RFC7741
 type VP8 struct {
 	PayloadTyp uint8
 	MaxFR      *int

pkg/format/vp9.go

@@ -10,7 +10,7 @@ import (
 )
 
 // VP9 is the RTP format for the VP9 codec.
-// Specification: https://datatracker.ietf.org/doc/html/draft-ietf-payload-vp9-16
+// Specification: RFC9628
 type VP9 struct {
 	PayloadTyp uint8
 	MaxFR      *int