HLS muxer: support dynamic H264 SPS/PPS

internal/hls/muxer.go

@@ -1,7 +1,6 @@
 package hls
 
 import (
-	"fmt"
 	"io"
 	"time"
 
@@ -23,12 +22,6 @@ func NewMuxer(
 	videoTrack *gortsplib.TrackH264,
 	audioTrack *gortsplib.TrackAAC,
 ) (*Muxer, error) {
-	if videoTrack != nil {
-		if videoTrack.SPS() == nil || videoTrack.PPS() == nil {
-			return nil, fmt.Errorf("invalid H264 track: SPS or PPS not provided into the SDP")
-		}
-	}
-
 	primaryPlaylist := newMuxerPrimaryPlaylist(videoTrack, audioTrack)
 
 	streamPlaylist := newMuxerStreamPlaylist(hlsSegmentCount)

internal/hls/muxer_ts_generator.go

@@ -119,21 +119,6 @@ func (m *muxerTSGenerator) writeH264(pts time.Duration, nalus [][]byte) error {
 		{byte(h264.NALUTypeAccessUnitDelimiter), 240},
 	}
 
-	for _, nalu := range nalus {
-		typ := h264.NALUType(nalu[0] & 0x1F)
-		switch typ {
-		case h264.NALUTypeSPS, h264.NALUTypePPS, h264.NALUTypeAccessUnitDelimiter:
-			// remove existing SPS, PPS, AUD
-			continue
-
-		case h264.NALUTypeIDR:
-			// add SPS and PPS before every IDR
-			filteredNALUs = append(filteredNALUs, m.videoTrack.SPS(), m.videoTrack.PPS())
-		}
-
-		filteredNALUs = append(filteredNALUs, nalu)
-	}
-
 	enc, err := h264.EncodeAnnexB(filteredNALUs)
 	if err != nil {
 		if m.currentSegment.buf.Len() > 0 {