[FFmpeg-devel] FFmpeg 0.7.5 is very much slower than FFmpeg 0.7 for decoding [SOLVED]

Dominik 'Rathann' Mierzejewski dominik at greysector.net
Thu Oct 6 13:45:20 CEST 2011

Dear Unga,

On Thursday, 06 October 2011 at 10:45, Unga wrote:
> --- On Thu, 10/6/11, Dominik 'Rathann' Mierzejewski <dominik at greysector.net> wrote:
> > From: Dominik 'Rathann' Mierzejewski <dominik at greysector.net>
> > Subject: Re: [FFmpeg-devel] FFmpeg 0.7.5 is very much slower than FFmpeg 0.7 for decoding [SOLVED]
> > To: "FFmpeg development discussions and patches" <ffmpeg-devel at ffmpeg.org>
> > Date: Thursday, October 6, 2011, 7:11 AM
> > On Tuesday, 04 October 2011 at 18:08,
> > Unga wrote:
> > [...]
> > > The issue was asm options. 
> > > 
> > > The ffmpeg version 0.7-rc1 was installed with asm
> > options. (manual
> > > compilation)
> > > 
> > > ffmpeg version 0.7.5 was installed with asm options
> > disabled!
> > > (FreeBSD port system)
> > 
> > Please ask the port maintainer to enable runtime cpu
> > detection and not disable asm.
> The right solution is always to make the ffmpeg directly compatible with
> FreeBSD (of course, along with other supported OSs). That is, just download
> the ffmpeg, run configure with once's required options and make and make
> install.

Only partially. The right solution is to fix bugs at the source, not
add workarounds for them everywhere else.

> Right now, thanks to ffmpeg developers, ffmpeg is "directly" compatible
> with FreeBSD 8. This is a good thing, which benefit larger number of
> FreeBSD users whether they use FreeBSD port system or not.

This is all good and well, but the preferable solution is to fix the
port so that users can use their distro-provided package manager to
install whatever they want and not need to bother with building it

> Please note, FreeBSD OS and its default port system are two different
> things. It is not mandatory to use the FreeBSD port system on FreeBSD.

Yes, but it's always better not to litter your system with self-compiled

> Hope, you have noted, I just compiled and installed ffmpeg with options
> that I want. I did not wait until port maintainers to upgrade it.

Good for you. Not everyone can or wants to compile from source on their own.

> By making any software directly compatible with FreeBSD or any other OS,
> you make users do not have depend on their port maintainers.

Yes, however some reasonable minimal requirements have to be met.
Like having a non-ancient version of binutils for example.


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