Metadata for Vorbis stream not delivery

[max79]

Problem with "LAV Splitter Source[v0.70.2]" metadata delivery. For this Vorbis IceCast stream "Artist" tag didn't delivered, only "Title":

​http://ai-radio.org:8000/radio

[James]

$ ./ffmpeg -i http://ai-radio.org:8000/radio -loglevel debug
ffmpeg version N-86808-g32cdbd1bd9 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.1.0 (Rev2, Built by MSYS2 project)
  configuration: --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libwebp --cpu=haswell --extra-cflags='-D_WIN32_WINNT=0x0602' --cc='ccache gcc' --samples=../samples --prefix=/mingw64
  libavutil      55. 67.100 / 55. 67.100
  libavcodec     57.101.100 / 57.101.100
  libavformat    57. 75.100 / 57. 75.100
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 95.100 /  6. 95.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'http://ai-radio.org:8000/radio'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url http://ai-radio.org:8000/radio.
Successfully parsed a group of options.
Opening an input file: http://ai-radio.org:8000/radio.
[NULL @ 0000000000d286a0] Opening 'http://ai-radio.org:8000/radio' for reading
[http @ 0000000000d28ea0] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy'
[http @ 0000000000d28ea0] request: GET /radio HTTP/1.1
User-Agent: Lavf/57.75.100
Accept: */*
Range: bytes=0-
Connection: close
Host: ai-radio.org:8000
Icy-MetaData: 1


[ogg @ 0000000000d286a0] Format ogg probed with size=2048 and score=100
[ogg @ 0000000000d286a0] Before avformat_find_stream_info() pos: 9581 bytes read:9581 seeks:0 nb_streams:2
[ogg @ 0000000000d286a0] All info found
[ogg @ 0000000000d286a0] After avformat_find_stream_info() pos: 9581 bytes read:9581 seeks:0 frames:2
Input #0, ogg, from 'http://ai-radio.org:8000/radio':
  Metadata:
    icy-description : Real Hi-Fi internet radiostation, Hi-End broadcasting for audiophile
    icy-genre       : VideoGame DemoScene MOD Tracker KeyGen VGM Score Chiptunes 8bit 1bit Low-fi C64 VGRemix Video Game
    icy-name        : ai-radio.org - video game music and many other more...OGG 256.KB airadio
    icy-pub         : 0
    icy-url         : http://ai-radio.org/?f=256.ogg
  Duration: N/A, start: 287.792472, bitrate: 224 kb/s
    Stream #0:0, 1, 1/44100: Audio: vorbis, 44100 Hz, stereo, fltp, 224 kb/s
    Metadata:
      HTTP://AI-RADIO.ORG :
                      :   _   o                  _   /
                      :  |_|  L  _,,_ _| o _,   F ===|:
                      :  I l. |. | (] L| I L|   L....]
      IRC             : irc://chat.freenode.net/#ai-radio.org
      NOW             : Wed Jul 19 02:39:28 2017
                      : ?c?[33m;?[36m;?[1m?[30m;?[0m
      ARTIST          : Mutherpluckin’ B
      TITLE           : “Alpine Peak (After Ski Party)” (Donkey Kong Barrel Blast)
      ALBUM           : Super VG Christmas Party
      DATE            : 2014
      GENRE           : video game
      track           : 21
      DURATION        : 4:57
      BITRATE         : 256
      SOURCE          : http://ai-radio.org/256.ogg
    Stream #0:1, 1, 1/90000: Video: png, 1 reference frame, pal8(pc), 120x120, 0/1, 90k tbr, 90k tbn, 90k tbc
    Metadata:
      comment         : Cover (front)
      title           : 1491039799
Successfully opened the file.
At least one output file must be specified
[AVIOContext @ 00000000024e35e0] Statistics: 9581 bytes read, 0 seeks

Can't reproduce with ffmpeg.

Consider reporting this to LAVFilters as i said in ticket #6534.