#3  0x000000000044fbd8 in mk_write_to_fd (mkm=0x170c4d0, 
    hq=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
    at src/muxer/tvh/mkmux.c:453
453	  muxer_cache_update(mkm->m, mkm->fd, oldpos, 0);
$1 = {m = 0x1735760, fd = 21, filename = 0x1735640 "Live stream", error = 0, 
  fdpos = 369, seekable = 0, tracks = 0x7ffc280511a0, ntracks = 2, 
  has_video = 1, totduration = 0, cluster = 0x0, cluster_tc = 0, 
  cluster_pos = 0, cluster_maxsize = 0, segment_header_pos = 40, 
  segment_pos = 52, segmentinfo_pos = 52, trackinfo_pos = 159, 
  metadata_pos = 0, cue_pos = 0, chapters_pos = 0, addcue = 0, cues = {
    tqh_first = 0x0, tqh_last = 0x170c578}, chapters = {tqh_first = 0x0, 
    tqh_last = 0x170c588}, 
  uuid = "mDr\f\235\037\216\267\217\332]F\004\243", <incomplete sequence \353>, title = 0x7ffc28047b00 "514000/POP", webm = 0}