Here is an example log:
-y -i "\\ZACATE\Music (Azure)\Accel World\Accel World ED Single\01 →unfinished→.flac" -threads 0 -vn -acodec pcm_s16le -f wav -ss 00:00:00 -t 00:04:42 "R:\TEMP\TAudioConverter\001 →unfinished→.wav"
-8 -f --picture="R:\TEMP\TAudioConverter\\01 →unfinished→.jpg" "R:\TEMP\TAudioConverter\001 →unfinished→.wav" -o "r:\ACATE\Music (Azure)\Accel World\Accel World ED Single\01 →unfinished→.flac"
" " "R:\TEMP\TAudioConverter\\0tag.txt" "r:\ACATE\Music (Azure)\Accel World\Accel World ED Single\01 →unfinished→.flac"
ffmpeg version N-55159-gf118b41 Copyright © 2000-2013 the FFmpeg developers
built on Aug 1 2013 18:11:15 with gcc 4.7.3 (GCC)
configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 40.100 / 52. 40.100
libavcodec 55. 19.100 / 55. 19.100
libavformat 55. 12.102 / 55. 12.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.100 / 3. 82.100
libswscale 2. 4.100 / 2. 4.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, flac, from '\\ZACATE\Music (Azure)\Accel World\Accel World ED Single\01 竊置nfinished竊・flac':
Metadata:
ALBUM : 竊置nfinished竊・
ARTIST : KOTOKO
COMMENT : YEAR: 2012
DATE : 2012
GENRE : JPop
TITLE : 竊置nfinished竊・
TRACKTOTAL : 4
track : 1
REPLAYGAIN_ALBUM_GAIN: -11.78 dB
REPLAYGAIN_ALBUM_PEAK: 1.000000
REPLAYGAIN_TRACK_GAIN: -12.60 dB
REPLAYGAIN_TRACK_PEAK: 1.000000
Duration: 00:04:42.04, bitrate: 1181 kb/s
Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
Stream #0:1: Video: mjpeg, yuvj420p, 1423x1423, 90k tbr, 90k tbn, 90k tbc
Metadata:
comment : Cover (front)
Output #0, wav, to 'R:\TEMP\TAudioConverter\001 竊置nfinished竊・wav':
Metadata:
IPRD : 竊置nfinished竊・
IART : KOTOKO
ICMT : YEAR: 2012
ICRD : 2012
IGNR : JPop
INAM : 竊置nfinished竊・
TRACKTOTAL : 4
IPRT : 1
REPLAYGAIN_ALBUM_GAIN: -11.78 dB
REPLAYGAIN_ALBUM_PEAK: 1.000000
REPLAYGAIN_TRACK_GAIN: -12.60 dB
REPLAYGAIN_TRACK_PEAK: 1.000000
ISFT : Lavf55.12.102
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (flac -> pcm_s16le)
Press [q] to stop, [?] for help
size= 48586kB time=00:04:42.04 bitrate=1411.2kbits/s
video:0kB audio:48586kB subtitle:0 global headers:0kB muxing overhead 0.000414%
flac 1.3.0, Copyright © 2000-2009, 2011-2013 Josh Coalson & Xiph.Org Foundation
flac comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
welcome to redistribute it under certain conditions. Type `flac' for details.
001 ?unfinished?.wav: WARNING: skipping unknown chunk 'LIST' (use --keep-foreign-metadata to keep)
001 ?unfinished?.wav: wrote 41566991 bytes, ratio=0,835
TTagger - 0.1 Beta - © 2013 ozok - GPLv2
Simple tool to write tags to audio files.
Uses tagging components from 3delite.hu.
Usage: ttagger.exe tagsfile.txt filetowritetags
Reading tags from 0tag.txt and writing to 01 →unfinished→.flac
Following tags will be written:
Title=→unfinished→
Artist=KOTOKO
Album=→unfinished→
Genre=JPop
Date=2012
TrackNo=1
TrackTotal=4
DiscNo=
Comment= YEAR: 2012
AlbumArtist=
Composer=
NameSort=
ArtistSort=
AlbumArtistSort=
AlbumSort=
Cover=R:\TEMP\TAudioConverter\01 →unfinished→.jpg
Tag type to write is FLAC.
Starting to write tags.
Saving to file.
Saved to file: r:\ACATE\Music\Accel World\Accel World ED Single\01 →unfinished→.flac
Two things I see is that it skips some "foreign metadata". Also, handling network paths is still messy when telling it to recreate folder structure
Comparing the source file to the output one, the tags are seen as FLAC (FLAC) at source in MP3Tag, but the column is blank for the output file - as are all tags, except for the image tag, which appears just fine. If it helps, I told TAC to embed the artwork, embedded first.
It's also interesting that even though the log is in utf-8, some of the → appear corrupted. And MP3Tag cannot remove or write tags to those files.