gistfile1.txt

[klaxa@can Uta_no_Prince-sama_[Vyrsalia]]$ for i in *.mkv; do ffmpeg -i "$i" -vf subtitles="$i" -c:a copy -c:v libx264 -crf 20 "hardsub/$i" -loglevel debug -y; done
ffmpeg version N-51025-g286153e Copyright (c) 2000-2013 the FFmpeg developers
  built on Mar 16 2013 23:15:00 with gcc 4.4.5 (Debian 4.4.5-8)
  configuration: --enable-gpl --enable-nonfree --enable-libass --enable-libfdk-aac --enable-libvorbis --enable-libx264
  libavutil      52. 19.101 / 52. 19.101
  libavcodec     55.  0.100 / 55.  0.100
  libavformat    55.  0.100 / 55.  0.100
  libavdevice    55.  0.100 / 55.  0.100
  libavfilter     3. 47.102 /  3. 47.102
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Splitting the commandline.
Reading option '-i' ... matched as input file with argument '[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'subtitles=[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-crf' ... matched as AVOption 'crf' with argument '20'.
Reading option 'hardsub/[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv' ... matched as output file.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument 'debug'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set libav* logging level) with argument debug.
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input file [Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv.
Successfully parsed a group of options.
Opening an input file: [Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv.
[matroska,webm @ 0x1665d60] Format matroska,webm probed with size=2048 and score=100
st:0 removing common factor 1000000 from timebase
st:1 removing common factor 1000000 from timebase
st:2 removing common factor 1000000 from timebase
[matroska,webm @ 0x1665d60] File position before avformat_find_stream_info() is 25438
[h264 @ 0x166d160] Using externally provided dimensions
[h264 @ 0x166d160] no picture 
[matroska,webm @ 0x1665d60] All info found
[matroska,webm @ 0x1665d60] File position after avformat_find_stream_info() is 105484
Input #0, matroska,webm, from '[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv':
  Metadata:
    title           : Uta no Prince-sama - 01
    creation_time   : 2011-07-25 03:03:44
  Duration: 00:24:31.00, start: 0.000000, bitrate: 2119 kb/s
    Chapter #0.0: start 0.000000, end 148.000000
    Metadata:
      title           : Prologue
    Chapter #0.1: start 148.000000, end 1362.000000
    Metadata:
      title           : Main
    Chapter #0.2: start 1362.000000, end 1464.000000
    Metadata:
      title           : Ending
    Chapter #0.3: start 1464.000000, end 1471.000000
    Metadata:
      title           : Preview
    Stream #0:0(jpn), 2, 1/1000: Video: h264 (High), yuv420p, 1280x720, 1001/48000, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Stream #0:1(jpn), 8, 1/1000: Audio: aac, 48000 Hz, stereo, fltp (default)
    Stream #0:2(eng), 0, 1/1000: Subtitle: ssa (default)
Codec 0x18000 is not in the full list.
    Stream #0:3, 0, 1/90000: Attachment: unknown_codec
    Metadata:
      filename        : Doctor Soos Bold.ttf
      mimetype        : application/x-truetype-font
Successfully opened the file.
Parsing a group of options: output file hardsub/[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv.
Applying option vf (set video filters) with argument subtitles=[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv.
Applying option c:a (codec name) with argument copy.
Applying option c:v (codec name) with argument libx264.
Successfully parsed a group of options.
Opening an output file: hardsub/[Vyrsalia] Uta no Prince-sama - 01v3 [720p][FAA4B5D9].mkv.
Successfully opened the file.
[Parsed_subtitles_0 @ 0x169c1c0] No filename provided!
[AVFilterGraph @ 0x1665c20] Error initializing filter 'subtitles' with args ''
Error opening filters!
Statistics: 131072 bytes read, 0 seeks