* ffmpeg-mt/master:
  Update todo. More items appeared...
  Fix mdec
Duplicate:  id3v1: change filesize to int64_t.
Duplicate:  id3v1: Seek back to old position after reading.

Conflicts:
    libavcodec/mpegvideo.c
    libavcodec/snow.c
    libavformat/id3v1.c
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>