ffmpeg - title to display throughout the video duration

Question

I have used the ffmpeg package to create a wmv file from gif (please see below). The title displays for a few seconds, then disappears. Is there a setting I can apply, in order to have the title appearing in the video throughout the duration?

ffmpeg -i Input.gif -s 300x300 -metadata title="Testing" Output.wmv 

Following the suggestion by Maxito, I have modified the code to

ffmpeg -i Input.gif -vf drawtext="text='Text to write is this one,     overlaid':fontsize=20:fontcolor=red:x=100:y=100" Output_Text.wmv

The following error message was received:

[AVFilterGraph @ 0x100115cc0] No such filter: 'drawtext'
Error opening filters!

This is the version of ffmpeg I used on Mac 10.6.8. Is there a need to re-compile?

ffmpeg version 2.5.3
built on Jan 19 2015 13:08:24 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --arch=x86_64 --enable-runtime-cpudetect
  libavutil      54. 15.100 / 54. 15.100
  libavcodec     56. 13.100 / 56. 13.100
  libavformat    56. 15.102 / 56. 15.102
  libavdevice    56.  3.100 / 56.  3.100
  libavfilter     5.  2.103 /  5.  2.103
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100

Answer 1

The error with AVFilterGraph and drawtext happens when your ffmpeg is compiled without libfreetype.

To generate images with text, you need to compile ffmpeg with libfreetype. The easiest way to do this is with Homebrew.

Assuming homebrew is already installed:

# If ffmpeg is already installed, you need to uninstall it.
brew uninstall ffmpeg

# you may very well want to specify other options (e.g. --with-faac)
brew install ffmpeg --with-freetype