ffmpeg update to june 23 version which fixes mp4 crash on still frames with 3...

source/patched-ffmpeg-mt/doc/fftools-common-opts.texi

 All the numerical options, if not specified otherwise, accept in input
 a string representing a number, which may contain one of the
 International System number postfixes, for example 'K', 'M', 'G'.
 If 'i' is appended after the postfix, powers of 2 are used instead of
 powers of 10. The 'B' postfix multiplies the value for 8, and can be
 appended after another postfix or used alone. This allows using for
 example 'KB', 'MiB', 'G' and 'B' as postfix.
 
+Options which do not take arguments are boolean options, and set the
+corresponding value to true. They can be set to false by prefixing
+with "no" the option name, for example using "-nofoo" in the
+commandline will set to false the boolean option with name "foo".
+
 @section Generic options
 
 These options are shared amongst the ff* tools.
 
 @table @option
 
 @item -L
 Show license.
 
 @item -h, -?, -help, --help
@@ skipping 51 matching lines @@
 @item quiet
 @item panic
 @item fatal
 @item error
 @item warning
 @item info
 @item verbose
 @item debug
 @end table
 
+By default the program logs to stderr, if coloring is supported by the
+terminal, colors are used to mark errors and warnings. Log coloring
+can be disabled setting the environment variable @env{NO_COLOR}.
+
 @end table