录制增加OPUS音频后，WriteTrailer报错

[klk2x]

我使用go-mp4模块，实现rtsp流的录制，单H264是正常录制的
增加同时录制opus音频后，WriteTrailer报错

这是我少写了什么吗，还是写入的数据不对？

这是报错日志：

2024/06/19 12:19:45 INF [RecordHandler] startRecord : path=live /Users/lele/WebstormProjects/2023/recordings/20240619/live/12-19-45-832900.mp4
2024/06/19 12:19:50 INF [RecordHandler] Recording Stop completeChan path=live
2024/06/19 12:19:50 INF [RecordHandler] stopRecord path=live %!s(bool=true)
2024/06/19 12:19:50 WAR [RecordHandler] write Stop
panic: runtime error: slice bounds out of range [:8] with capacity 0

goroutine 208 [running]:
github.com/yapingcat/gomedia/go-codec.(*OpusContext).ParseExtranData(0x394170?, {0x0?, 0xc000d355e0?, 0x10e01653b?})
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-codec/opus.go:352 +0x59c
github.com/yapingcat/gomedia/go-mp4.makeOpusSpecificBox({0x0?, 0x10f9b8d80?, 0x10f9738c0?})
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/dops-box.go:108 +0x51
github.com/yapingcat/gomedia/go-mp4.makeStsd(0xc0005a6a00, {0x73, 0x6f, 0x75, 0x6e})
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/stsd-box.go:334 +0xeb
github.com/yapingcat/gomedia/go-mp4.makeStblBox(0xc0005a6a00)
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/stbl-box.go:11 +0x68
github.com/yapingcat/gomedia/go-mp4.makeMinfBox(0xc0005a6a00)
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/minf-box.go:15 +0x75
github.com/yapingcat/gomedia/go-mp4.makeMdiaBox(0xc0005a6a00)
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/mdia-box.go:6 +0xa5
github.com/yapingcat/gomedia/go-mp4.makeTrak(0xc0005a6a00, 0xdd290?)
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/trak-box.go:16 +0x20a
github.com/yapingcat/gomedia/go-mp4.(*Movmuxer).writeMoov(0xc0008c79c0, {0x10f14d0e8, 0xc000573740})
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/mp4muxer.go:299 +0x1dc
github.com/yapingcat/gomedia/go-mp4.(*Movmuxer).WriteTrailer(0xc0008c79c0)
	/Users/lele/go/pkg/mod/github.com/yapingcat/[email protected]/go-mp4/mp4muxer.go:224 +0x189
github.com/bluenviron/mediamtx/internal/core.(*mp4Muxer).WriteTrailer(0xc000ad0220?)

这是我增加的opus实现：

rtpDec, err := forma.CreateDecoder()
for _, pkt := range u.GetRTPPackets() {
      opkt, err := rtpDec.Decode(pkt)
      if err != nil {
	      continue
      }
      err = meidiaMuxer.Write(atid, opkt, uint64(int64(pts/time.Millisecond)), uint64(int64(pts/time.Millisecond)))
}