I have a Panasonic GT20 and use the 2011 profile Panasonic tv.
But when i try to play some files it says file format not supported but transcoding settings is on. (it says it is a jpeg file)

ffmpeg info>

Code:
ffmpeg version N-50460-g393dcbf Copyright (c) 2000-2013 the FFmpeg developers
  built on Mar  4 2013 17:38:17 with gcc 4.6.2 (GCC)
  configuration: --enable-memalign-hack --arch=x86 --target-os=mingw32 --cross-prefix=i686-w64-mingw32- --enable-static --disable-shared --enable-zlib --disable-postproc --prefix=/home/peter/ffmpeg/build/gpl --enable-libmp3lame --enable-libx264 --enable-gpl --extra-libs='-lx264 -lpthread' --enable-runtime-cpudetect --extra-cflags=-I/home/peter/cc/include --extra-ldflags=-L/home/peter/cc/lib --pkg-config=pkg-config --disable-w32threads --enable-zlib
  libavutil      52. 17.103 / 52. 17.103
  libavcodec     54. 92.100 / 54. 92.100
  libavformat    54. 63.102 / 54. 63.102
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 41.100 /  3. 41.100
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
[matroska,webm @ 016fe120] Unknown entry 0x63C9
Input #0, matroska,webm, from 'G:\Anime\Cowboy Bebop\Cowboy Bebop - S01E01 - Asteroid Blues.mkv':
  Metadata:
    creation_time   : 2013-01-23 07:43:14
    TRACKSETEX      : 390046092 . 3000000000 600000000 jpn Japanese Commentary
  Duration: 00:24:43.75, start: 0.000000, bitrate: 9147 kb/s
    Chapter #0.0: start 0.000000, end 48.911000
    Metadata:
      title           : Prologue
    Chapter #0.1: start 48.911000, end 139.178000
    Metadata:
      title           : Opening Credits
    Chapter #0.2: start 139.178000, end 744.640000
    Metadata:
      title           : Part 1
    Chapter #0.3: start 744.640000, end 1356.728000
    Metadata:
      title           : Part 2
    Chapter #0.4: start 1356.728000, end 1451.895000
    Metadata:
      title           : Ending Credits
    Chapter #0.5: start 1451.895000, end 1483.754000
    Metadata:
      title           : Next Episode Preview
    Stream #0:0(jpn): Video: h264 (High), yuv420p, 1448x1080 [SAR 1:1 DAR 181:135], 29.97 fps, 29.97 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : Episode 01 - Asteroid Blues
    Stream #0:1(eng): Audio: aac, 48000 Hz, 5.1, fltp (default)
    Metadata:
      title           : English Dolby Surround 5.1ch AAC
    Stream #0:2(jpn): Audio: aac, 48000 Hz, 5.1, fltp
    Metadata:
      title           : Japanese Dolby Surround 5.1ch AAC
    Stream #0:3(jpn): Audio: aac, 48000 Hz, stereo, fltp
    Metadata:
      title           : Japanese Cast Commentary 2ch AAC
    Stream #0:4(eng): Subtitle: ssa (default)
    Metadata:
      title           : English Signs
    Stream #0:5(eng): Subtitle: ssa
    Metadata:
      title           : English Subtitles
    Stream #0:6(eng): Subtitle: ssa
    Metadata:
      title           : English Cast Commentary Subtitles
Codec 0x18000 is not in the full list.
    Stream #0:7: Attachment: unknown_codec
    Metadata:
      filename        : calibri.ttf
      mimetype        : application/x-truetype-font
Codec 0x18000 is not in the full list.
    Stream #0:8: Attachment: unknown_codec
    Metadata:
      filename        : calibrii.ttf
      mimetype        : application/x-truetype-font
Codec 0x18000 is not in the full list.
    Stream #0:9: Attachment: unknown_codec
    Metadata:
      filename        : TEMPSITC.TTF
      mimetype        : application/x-truetype-font
At least one output file must be specified

<MEZZMO>: Child process ended with code: 109, ExitCode=1


---> DB Level Info: 41, 100
---> Frame rate: 29,97
---> Aspect ratio: 181:135