Date: Fri, 23 Sep 2016 02:04:32 -0700 (PDT) From: Robert_Burmeister <robert.burmeister@utoledo.edu> To: freebsd-multimedia@freebsd.org Subject: Re: FreeBSD Port: multimedia/ffmpeg Message-ID: <1474621472428-6132215.post@n6.nabble.com> In-Reply-To: <20160921100328.GB20039@marvin2011.fritz.box> References: <57E21592.4090705@UToledo.edu> <20160921100328.GB20039@marvin2011.fritz.box>
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I am using an Intel Core2 Duo 8400 with CPUTYPE?=core2 and a Nvidia 210 graphics card for OpenGL. Toggling SSE off and recompiling FFMPEG resolves the crash, while still using additional flags: MMX, OPENGL, OPTIMIZED_CFLAGS, VAAPI & VDPAU. I have been toggling compile options for several years trying to get FFMPEG2+ to work; I did not think to try toggling SSE as this instruction set has been around since the original Pentium and Athlon processors, and I assumed that it was well understood and universally supported. Until today, I was unaware of the degree of volatility and discussion of CPU typing that has been going on in LLVM development. A note mentioning SSE bugs in older processors in UPDATING would be helpful, as would documenting the FFMPEG configuration option something like "SSE=on: Use SSE optimized routines (Set to off for core2 and previous CPUs)" -- View this message in context: http://freebsd.1045724.x6.nabble.com/FreeBSD-Port-multimedia-ffmpeg-tp6131737p6132215.html Sent from the freebsd-multimedia mailing list archive at Nabble.com.
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