downgrade ffmpeg-php

Hello!

I have a "Fatal error: failed to convert frame to gd image" error.

A other user in this forum said that he uses a lower version of ffmpeg-php.
If I try to remove the 0.6.0 version with "make uninstall" I get this:
make: *** No rule, to create »uninstall« . Finished.

Code:

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ks300847:/usr/local/src/ffmpeg-php-0.6.0#
ks300847:/usr/local/src/ffmpeg-php-0.6.0# php -i |grep ffm
PHP Warning:  Module 'json' already loaded in Unknown on line 0
PWD => /usr/local/src/ffmpeg-php-0.6.0
_SERVER["PWD"] => /usr/local/src/ffmpeg-php-0.6.0
_ENV["PWD"] => /usr/local/src/ffmpeg-php-0.6.0
ks300847:/usr/local/src/ffmpeg-php-0.6.0#

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How to downgrade?