[FFmpeg-user] ffmpeg 1.0.5 and buffer underflow - Update

Reindl Harald h.reindl at thelounge.net
Sat May 4 13:31:17 CEST 2013

Am 04.05.2013 13:23, schrieb Carl Eugen Hoyos:
> Mark Haney <sullafelix <at> ymail.com> writes:
>> ffmpeg version 1.0.5
> This does not look like current git head;-(
>> --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 
>> -fexceptions -fstack-protector --param=ssp-buffer-size=4 
>> -m64 -mtune=generic'
> Unrelated:
> There are two possibilities: Either these options are 
> useful, then they should be made default for FFmpeg, 
> this needs either a patch sent to ffmpeg-devel 
> (together with the explanation why the patch is needed) 
> or a bug report explaining why a particular option 
> should be set.
> Or the options are not useful, then you should remove 
> them from compilation

have you ever considered to google them?

"-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4" are
default for ANY package of most linux-distributions since years for
security reasons

and for a hardening build you enable "-fPIC -fPIE -fstack-protector-all"
too as also "-Wl,-z,now -Wl,-z,relro" as LDFLAGS

yes, they affect performance, but security first

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