share/lua/intf/dumpmeta.lua

   1 --[==========================================================================[
   2 dumpmeta.lua: dump a file's meta data on stdout/stderr
   3 --[==========================================================================[
   4  Copyright (C) 2010 the VideoLAN team
   5  $Id$
   6
   7  Authors: Antoine Cellerier <dionoea at videolan dot org>
   8
   9  This program is free software; you can redistribute it and/or modify
  10  it under the terms of the GNU General Public License as published by
  11  the Free Software Foundation; either version 2 of the License, or
  12  (at your option) any later version.
  13
  14  This program is distributed in the hope that it will be useful,
  15  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  GNU General Public License for more details.
  18
  19  You should have received a copy of the GNU General Public License
  20  along with this program; if not, write to the Free Software
  21  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22 --]==========================================================================]
  23
  24 --[[ to dump meta data information in the debug output, run:
  25        vlc -I luaintf --lua-intf dumpmeta coolmusic.mp3
  26      Additional options can improve performance and output readability:
  27        -V dummy -A dummy --no-video-title --no-media-library -q
  28 --]]
  29
  30 local item
  31 repeat
  32     item = vlc.input.item()
  33 until (item and item:is_preparsed())
  34
  35 -- preparsing doesn't always provide all the information we want (like duration)
  36 repeat
  37 until item:stats()["demux_read_bytes"] > 0
  38
  39 vlc.msg.info("name: "..item:name())
  40 vlc.msg.info("uri: "..vlc.strings.decode_uri(item:uri()))
  41 vlc.msg.info("duration: "..tostring(item:duration()))
  42
  43 vlc.msg.info("meta data:")
  44 local meta = item:metas()
  45 if meta then
  46     for key, value in pairs(meta) do
  47         vlc.msg.info("  "..key..": "..value)
  48     end
  49 else
  50     vlc.msg.info("  no meta data available")
  51 end
  52
  53 vlc.msg.info("info:")
  54 for cat, data in pairs(item:info()) do
  55     vlc.msg.info("  "..cat)
  56     for key, value in pairs(data) do
  57         vlc.msg.info("    "..key..": "..value)
  58     end
  59 end
  60
  61 vlc.misc.quit()